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{{Short description|North American species of columbine}}
{{About|the flower|the town|Columbine, Colorado|the [[School shooting|school shooting]]|Columbine High School massacre}}
{{About|the flower|the town|Columbine, Colorado|the [[school shooting]]|Columbine High School massacre}}
{{Short description|Species of flowering plant}}
{{Speciesbox
{{Speciesbox
|image = Heavycolumbinebloom.jpg
| image = Aquilegia coerulea - Laura Gaudette 01.jpg
| image_caption =
|genus = Aquilegia
| status = {{TNCStatus}}
|species = coerulea
| status_system = TNC
|authority = [[Edwin James (scientist)|E.James]]
| status_ref = <ref name="NatureServe">{{cite web |last1=NatureServe |title=''Aquilegia caerulea'' |url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.135746/Aquilegia_caerulea |access-date=19 June 2024 |location=Arlington, Virginia |date=2024}}</ref>
| genus = Aquilegia
| species = coerulea
| authority = [[E.James]]
| subdivision_ranks = Varieties
| subdivision_ref =
| subdivision = {{Species list
| Aquilegia coerulea var. alpina |A.Nelson
| Aquilegia coerulea var. coerulea |
| Aquilegia coerulea var. ochroleuca |Hook.
| Aquilegia coerulea var. pinetorum |(Tidestr.) Payson ex Kearney & Peebles
}}
| synonyms_ref = <ref name="POWO">{{cite POWO |id=60438279-2 |title=''Aquilegia coerulea'' E.James |access-date=8 June 2024}}</ref>
| synonyms = {{Collapsible list | {{Species list
| Aquilegia canadensis subsp. coerulea |(E.James) Brühl
| Aquilegia formosa subsp. coerulea | (E.James) Brühl
}}
}}
}}
}}


'''''Aquilegia coerulea''''', the '''Colorado blue columbine''', is a [[species]] of [[flowering plant]] in the buttercup family Ranunculaceae, native to the [[Rocky Mountains]], USA. ''Aquilegia coerulea'' is the [[List of U.S. state flowers|state flower]] of [[Colorado]].<ref>{{cite web|url=https://www.colorado.gov/pacific/archives/state-flower|title=State Flower|publisher=State of Colorado|access-date=19 August 2020}}</ref>
'''''Aquilegia coerulea''''', the '''Colorado columbine''', '''Rocky Mountain columbine''', or '''blue columbine''', is a [[species]] of [[flowering plant]] in the buttercup family Ranunculaceae, native to the [[Rocky Mountains]] and some of the surrounding states of the western United States. It is the [[List of U.S. state flowers|state flower]] of [[Colorado]]. The Latin [[Binomial nomenclature|specific name]] ''coerulea'' (or ''caerulea'') means "sky blue".

The Latin [[Binomial nomenclature|specific name]] ''coerulea'' (or ''caerulea'') means "sky blue".<ref name=RHSLG>{{cite book |last=Harrison |first=Lorraine |title=RHS Latin for Gardeners |year=2012 |publisher=Mitchell Beazley |location=United Kingdom |isbn=978-1845337315}}</ref>


==Description==
==Description==
''Aquilegia coerulea'' is a [[herbaceous plant]] with flowering stems that may be {{convert|15–80|cm|in|0|sp=us}} when fully grown.<ref name="4Corners">{{cite book |last1=Heil |first1=Kenneth D. |last2=O'Kane, Jr. |first2=Steve L. |last3=Reeves |first3=Linda Mary |last4=Clifford |first4=Arnold |title=Flora of the Four Corners Region : Vascular Plants of the San Juan River Drainage, Arizona, Colorado, New Mexico, and Utah |date=2013 |publisher=Missouri Botanical Garden |location=St. Louis, Missouri |pages=881–882 |url=https://archive.org/details/mobot31753003888887/page/n898 |access-date=8 June 2024}}</ref> Its leaves are on stems that are always shorter than the flowering stems, just {{cvt|9–37|cm|in|0}} and are [[compound leaves]] that usually have three leaflets on three components ([[biternate]]), but occasionally may be simpler with just three leaflets ([[trifoliate]]) or more complex ([[tripinnate]]).<ref name="FNA">{{cite web |last1=Whittemore |first1=Alan T. |title=''Aquilegia coerulea'' - FNA |url=http://floranorthamerica.org/Aquilegia_coerulea |website=Flora of North America |access-date=8 June 2024 |date=6 November 2020}}</ref> Each leaflet is quite thin, smooth and hairless on the upper side ({{plantgloss|glabrous}}), and green. They may either be glabrous or covered in fine, minute hairs on the underside of the leaf ({{plantgloss|pubescent}}) and have three {{plantgloss|lobe|lobes}}.<ref name="Nold">{{cite book |last1=Nold |first1=Robert |title=Columbines : Aquilegia, Paraquilegia, and Semiaquilegia |date=2003 |publisher=Timber Press |location=Portland, Oregon |isbn=978-0-88192-588-3 |pages=18, 20–21, 29, 76-79 |url=https://archive.org/details/columbines00robe/page/76 |access-date=8 June 2024 |language=en}}</ref><ref name="Alpine Wldflrs">{{cite book |last1=Duft |first1=Joseph F. |last2=Moseley |first2=Robert K. |title=Alpine Wildflowers of the Rocky Mountains |date=1989 |publisher=Mountain Press |location=Missoula, Montana |isbn=978-0-87842-238-8 |page=68 |url=https://archive.org/details/alpinewildflower0000duft/page/68 |access-date=8 June 2024 |language=en}}</ref> Leaflets most often range in size from {{cvt|13–42|mm|in|frac=8}}, but occasionally may be as long as {{cvt|61|mm|in|frac=8}}.<ref name="FNA" />
It is a [[herbaceous]] [[perennial plant]] often found at elevations of 2,100 to 3,700 m (6,900 to 12,100&nbsp;ft). It grows to {{cvt|20-60|cm|in|abbr=on}} tall, with flowers sprouting in inflorescences produced from the short [[Apical (anatomy)|apical]] [[meristem]].<ref>{{Cite journal|last=Pabón-Mora|first=Natalia|last2=Sharma|first2=Bharti|last3=Holappa|first3=Lynn D.|last4=Kramer|first4=Elena M.|last5=Litt|first5=Amy|date=March 7, 2013|title=The Aquilegia FRUITFULL-like genes play key roles in leaf morphogenesis and inflorescence development|journal=The Plant Journal|volume=74|issue=2|pages=198–199|doi=10.1111/tpj.12113|pmid=23294330}}</ref> The flowers are very variable in color, from pale blue (as in the species name ''coerulea'') to white, pale yellow and pinkish; very commonly the flowers are bicolored, with the sepals a different shade to the petals. They consist of five petals, five sepals and an [[Ovary (botany)|ovary]] surrounded by 50 to 130 [[stamen]]s. Five long spurs hang below the calyx and contain nectar at their tips, accessible only to [[Sphingidae|hawkmoths]]. In addition to hawkmoths, pollinators for this flower include bumble-bees, solitary bees and syrphid flies.<ref>{{Cite journal|last=Brunet|first=Johanne|date=2009|title=Pollinators of the Rocky Mountain columbine: temporal variation, functional groups and associations with floral traits|url= |journal=Annals of Botany|volume=103|issue=9|pages=1567–1578|doi=10.1093/aob/mcp096|pmid=19414518|pmc=2701757}}</ref> Its native habitats include moist woods and open mountain meadows.<ref>{{Cite web|title=Lady Bird Johnson Wildflower Center - The University of Texas at Austin|url=https://www.wildflower.org/plants/result.php?id_plant=AQCO|access-date=2021-12-20|website=www.wildflower.org}}</ref>


The plant flower buds nod, facing somewhat downward.<ref name="Gardener's Guide">{{cite book |last1=Art |first1=Henry Warren |title=The Wildflower Gardener's Guide. Pacific Northwest, Rocky Mountain, and Western Canada Edition |date=1990 |publisher=Storey Communications |location=Pownal, Vermont |isbn=978-0-88266-584-9 |pages=108-109 |url=https://archive.org/details/wildflowergarden0000arth/page/108 |access-date=17 June 2024}}</ref> The flowers are large and showy with a diameter of as much as {{convert|15|cm|in|0|sp=us}},<ref name="Nold" /> but more often about {{cvt|5–10|cm|in|0}}.<ref name="Meet the Natives">{{cite book |last1=Pesman |first1=M. Walter (Michiel Walter) |title=Meet the Natives : A Beginner's Field Guide to Rocky Mountain Wild Flowers, Trees, and Shrubs |date=1988 |publisher=Pruett Publishing for Denver Botanic Gardens |location=Boulder, Colorado |isbn=978-0-87108-731-7 |page=55 |edition=8th |url=https://archive.org/details/meetnatives0000unse/page/55 |access-date=18 June 2024}}</ref> They are so striking that the botanists [[E. O. Wooton]] and [[Paul C. Standley]] enthusiastically wrote of them in their 1915 ''Flora of New Mexico'',<ref name="Nold" /> {{blockquote|"This is the State flower of Colorado and no other State has one so beautiful. Few indeed are the flowers of the Rockies that can compare with this in beauty. The great blossoms, sometimes six inches in diameter, look like bits of fallen sky, and when the plants cover acres of meadow, as they sometimes do, no words can be found to do them justice."<ref>{{cite book |last1=Wooton |first1=Elmer Ottis |last2=Standley |first2=Paul Carpenter |title=Flora of New Mexico |date=1915 |publisher=Smithsonian Institution |location=Washington, D.C. |pages=248-249 |url=https://archive.org/details/floraofnewmexico00wootuoft/page/248 |access-date=8 June 2024 |language=en}}</ref>}} The flowers are atop stems that stand perpendicular to the ground ({{plantgloss|erect}}) with the outer five [[sepal]]s in shades of white to deep-blue or occasionally pink in their wild condition.<ref name="4Corners" /> The sepals range in shape from a flattened circle with somewhat pointed ends with the widest part moved toward the base ({{plantgloss|elliptical|elliptic}}-{{plantgloss|ovate}}) to like a somewhat egg shaped spear head ({{plantgloss|lanceolate|lance}}-ovate). They range in size from 26–51&nbsp;millimeters long and 8–23&nbsp;millimeters wide.<ref name="FNA" />
==Distribution==
It is native to Colorado, south eastern Idaho, southern Montana, Wyoming, northern New Mexico, and Utah.<ref name = GRIN>{{GRIN}}</ref>


The five petals have very long tapered spurs,<ref name="WF Teton & Yellowstone">{{cite book |last1=Shaw |first1=Richard J. |title=Wildflowers of Grand Teton and Yellowstone National Parks : including the greater Yellowstone Ecosystem |date=2004 |publisher=Wheelwright Press |location=Helena, Montana |isbn=978-0-9702067-2-5 |page=14 |edition=revised |url=https://archive.org/details/isbn_9780970206725/page/14 |access-date=8 June 2024 |language=en}}</ref> ranging from 25–72&nbsp;millimeters in length, though usually longer than 34&nbsp;mm.<ref name="FNA" /><ref name="4Corners" /> The blades of the petals are 13–28&nbsp;mm long by 5–14&nbsp;mm wide.<ref name="FNA" /> Petals are most often white to cream in color at the front with the spurs the same color as the sepals.<ref name="Craighead">{{cite book |last1=Craighead |first1=John Johnson |last2=Craighead, Jr. |first2=Frank Cooper |last3=Davis |first3=Ray J. |author1-link=Frank and John Craighead |author2-link=Frank and John Craighead |title=A field Guide to Rocky Mountain Wildflowers : From Northern Arizona and New Mexico to British Columbia |date=1963 |publisher=Houghton Mifflin |location=Boston, Massachusetts |isbn=978-0-395-18324-3 |pages=55-56 |edition=5th Printing |url=https://archive.org/details/fieldguidetorock0000crai/page/55 |access-date=19 June 2024}}</ref><ref>{{cite web |title=''Aquilegia coerulea'', Colorado blue columbine |url=https://www.fs.usda.gov/wildflowers/beauty/columbines/aquilegia_coerulea.shtml |website=Celebrating Wildflowers |publisher=US Forest Service |access-date=20 June 2024}}</ref>
==Cultivation==
''Aquilegia coerulea'' is used as an [[ornamental plant]] in gardens.
Its natural variability is exploited in the selection of numerous [[cultivar]]s in different shades. [[Cultivars]] include 'Origami'
<ref>[http://www.redbarnperennials.com/PlantArchive/Aquilegia%20caerykea.Origami%20Mix.htm Trim Tree Nursery: Aquilegia caerulea 'Origami Mix']</ref> and 'Crimson Star'.


The center of the flower has a projecting cluster of numerous bright orange-yellow [[stamen]]s, 50–130 total.<ref name="WF Teton & Yellowstone" /><ref name="Pollinators">{{cite journal |last1=Brunet |first1=Johanne |title=Pollinators of the Rocky Mountain columbine: temporal variation, functional groups and associations with floral traits |journal=Annals of Botany |date=June 2009 |volume=103 |issue=9 |pages=1567–1578 |doi=10.1093/aob/mcp096 |url=https://academic.oup.com/aob/article/103/9/1567/147066 |access-date=20 June 2024|pmc=2701757 }}</ref> The stamens range in length from 13 to 24&nbsp;mm.<ref name="FNA" /> They surround five to ten unfused [[carpel]]s. If fertilized each of the carpels may develop into a dry pod that splits along one side (a {{plantgloss|follicle}}).<ref name="Pollinators" /> Each of the pods is round in cross section and is filled with small, smooth, black seeds.<ref name="FNA Aquilegia">{{cite web |last1=Whittemore |first1=Alan T. |title=''Aquilegia'' - FNA |url=http://floranorthamerica.org/Aquilegia |website=Flora of North America |access-date=20 June 2024 |date=5 November 2020}}</ref>
==Gallery==
<gallery>
Aquilegia caerulea0.jpg|Yellow-p color variant
Aquilegia caerulea 'Crimson Star' Spectral comparison Vis UV IR.jpg|cv. 'Crimson Star' in visible light, UV (showing [[nectar guide]]s), and IR.
</gallery>


The leaves may be mistaken for that of a [[meadowrue]] (''Thalictrum''), but the flowers are entirely different and the species cannot be confused while flowering.<ref name="Craighead" /> Similar columbines in its range include ''[[Aquilegia scopulorum]]'', ''[[Aquilegia jonesii]]'', and ''[[Aquilegia micrantha]]''. ''Aquilegia scopulorum'' has leaves that are covered in natural waxes making them blue-green ({{plantgloss|glaucous}}) rather than green. It is found in Nevada and Utah. ''Aquilegia jonesii'' has much shorter spurs on its flowers, just 8-15&nbsp;mm and grows to the north in Wyoming, Montana, and Alberta. ''Aquilegia micrantha'' has very sticky leaves ({{plantgloss|viscid}}).<ref name="FNA Aquilegia" />
==References==

{{Reflist}}
==Taxonomy==
[[File:Blue Columbine (NGM XXXI p503).jpg|thumb|Blue columbine painted by [[Mary Emily Eaton]], 1917]]
The first scientific description of ''Aquilegia coerulea'' was by the American scientist [[Edwin James (scientist)|Edwin James]] in 1822.<ref name="POWO" /> Though ''Aquilegia coerulea'' was the original spelling by James, it has often been spelled as ''Aquilegia caerulea'' as this is more correct Latin. However, the rules of taxonomic nomenclature generally prefer the original spelling and this is the name adopted by the Board of International Botanic Nomenclature. James found the first specimen he collected in a thicket of scrub oak near what is today [[Palmer Lake, Colorado]] while on the [[Stephen H. Long Expedition of 1820]].<ref name="Dodson & Dunmire" /> After James's description seven species, six [[subspecies]], five [[Variety (botany)|varieties]], and
two [[Form (botany)|botanical forms]] have been described that are considered to be [[Synonym (taxonomy)|synonyms]] of the species or one of its four varieties.<ref name="POWO" /><ref name="POWO var alpina" /><ref name="POWO var coerulea" /><ref name="POWO var ochroleuca" /><ref name="POWO var pinetorum" />

{|class="wikitable sortable mw-collapsible mw-collapsed" id="Synonyms"
|+ class="nowrap" | Table of Synonyms
! Name
! Year
! Rank
! Synonym of:
! Notes
|-
| ''Aquilegia advena'' {{small|Regel}}
| 1856
| species
| var. ''coerulea''
| = het.
|-
| ''Aquilegia caerulea'' {{small|E.James}}
| 1823
| species
| var. ''coerulea''
| = het. [[orth. var.]]
|-
| ''Aquilegia canadensis'' subsp. ''coerulea'' {{small|(E.James) Brühl}}
| 1893
| subspecies
| ''Aquilegia coerulea''
| ≡ hom.
|-
| ''Aquilegia coerulea'' subsp. ''albiflora'' {{small|A.Gray ex Payson}}
| 1918
| subspecies
| var. ''ochroleuca''
| ≡ hom.
|-
| ''Aquilegia coerulea'' var. ''albiflora'' {{small|A.Gray}}
| 1895
| variety
| var. ''ochroleuca''
| ≡ hom. [[nom. superfl.]]
|-
| ''Aquilegia coerulea'' subsp. ''alpina'' {{small|(A.Nelson) Payson}}
| 1918
| subspecies
| var. ''alpina''
| ≡ hom.
|-
| ''Aquilegia coerulea'' subsp. ''daileyae'' {{small|(Eastw.) Payson}}
| 1918
| subspecies
| var. ''coerulea''
| = het.
|-
| ''Aquilegia coerulea'' var. ''daileyae'' {{small|Eastw.}}
| 1897
| variety
| var. ''coerulea''
| = het.
|-
| ''Aquilegia coerulea'' f. ''glandulosa'' {{small|Cockerell}}
| 1891
| form
| var. ''coerulea''
| = het.
|-
| ''Aquilegia coerulea var. leptoceras'' {{small|(Nutt.) A.Nelson}}
| 1909
| variety
| var. ''ochroleuca''
| ≡ hom. [[nom. superfl.]]
|-
| ''Aquilegia coerulea'' var. ''macrantha'' {{small|(Hook. & Arn.) Brühl}}
| 1893
| variety
| var. ''coerulea''
| = het.
|-
| ''Aquilegia coerulea'' f. ''pallidiflora'' {{small|Cockerell}}
| 1891
| form
| var. ''coerulea''
| = het.
|-
| ''Aquilegia coerulea'' subsp. ''pinetorum'' {{small|(Tidestr.) Payson}}
| 1918
| subspecies
| var. ''pinetorum''
| ≡ hom.
|-
| ''Aquilegia formosa'' subsp. ''coerulea'' {{small|(E.James) Brühl}}
| 1893
| subspecies
| ''Aquilegia coerulea''
| ≡ hom.
|-
| ''Aquilegia formosa'' var. ''macrantha'' {{small|(Hook. & Arn.) Brühl}}
| 1893
| variety
| var. ''coerulea''
| = het.
|-
| ''Aquilegia leptoceras'' {{small|Nutt.}}
| 1834
| species
| var. ''ochroleuca''
| ≡ hom.
|-
| ''Aquilegia macrantha'' {{small|Hook. & Arn.}}
| 1838
| species
| var. ''coerulea''
| = het.
|-
| ''Aquilegia oreophila'' {{small|Rydb.}}
| 1902
| species
| var. ''coerulea''
| = het.
|-
| ''Aquilegia piersoniana'' {{small|L.O.Williams}}
| 1934
| species
| var. ''coerulea''
| = het.
|-
| ''Aquilegia pinetorum'' {{small|Tidestr.}}
| 1910
| species
| var. ''pinetorum''
| ≡ hom.
|-
!colspan=5 style="text-align: left;" | Notes: ≡ homotypic synonym ; = heterotypic synonym
|}
Sequencing of the genome of this species has advanced the study of the evolution of basal [[eudicots]].<ref>{{Cite journal |last1=Filiault |first1=Danièle L |last2=Ballerini |first2=Evangeline S |last3=Mandáková |first3=Terezie |last4=Aköz |first4=Gökçe |last5=Derieg |first5=Nathan J |last6=Schmutz |first6=Jeremy |last7=Jenkins |first7=Jerry |last8=Grimwood |first8=Jane |last9=Shu |first9=Shengqiang |last10=Hayes |first10=Richard D |last11=Hellsten |first11=Uffe |last12=Barry |first12=Kerrie |last13=Yan |first13=Juying |last14=Mihaltcheva |first14=Sirma |last15=Karafiátová |first15=Miroslava |date=2018-10-16 |editor-last=Hardtke |editor-first=Christian S |editor2-last=McVean |editor2-first=Gil |title=The Aquilegia genome provides insight into adaptive radiation and reveals an extraordinarily polymorphic chromosome with a unique history |journal=eLife |volume=7 |pages=e36426 |doi=10.7554/eLife.36426 |doi-access=free |issn=2050-084X |pmc=6255393 |pmid=30325307}}</ref><ref>{{Cite journal |last1=Aköz |first1=Gökçe |last2=Nordborg |first2=Magnus |date=2019-11-28 |title=The Aquilegia genome reveals a hybrid origin of core eudicots |journal=Genome Biology |volume=20 |issue=1 |pages=256 |doi=10.1186/s13059-019-1888-8 |doi-access=free |issn=1474-760X |pmc=6883705 |pmid=31779695}}</ref>

===Varieties===
There are four widely accepted varieties of ''Aquilegia coerulea'' according to [[Plants of the World Online]],<ref name="POWO" /> [[World Flora Online]],<ref>{{Cite WFO |title=''Aquilegia caerulea'' E.James |id=0000541186 |access-date=19 June 2024}}</ref> and World Plants.<ref name="World Plants">{{cite web |last1=Michael |first1=Hassler |title=Synonymic Checklist and Distribution of the World Flora. Version 19.3 |url=https://www.worldplants.de/ |website=World Plants |access-date=19 June 2024 |date=16 June 2024}}</ref> Though World Plants additionally lists ''Aquilegia coerulea'' var. ''daileyae'' {{small|Eastw.}} as valid as does the USDA [[Natural Resources Conservation Service]] PLANTS database.<ref name="World Plants" /><ref name="USDA var daileyae">{{cite usda plants|symbol=AQCOD |title=Aquilegia coerulea var. daileyae |date=19 June 2024}}</ref>

====''Aquilegia coerulea'' var. ''alpina''====
This variety was scientifically described by the botanist [[Aven Nelson]] in 1896.<ref name="POWO var alpina">{{cite POWO |id=16783-2 |title=''Aquilegia coerulea'' var. ''alpina'' A.Nelson |access-date=18 June 2024}}</ref> It is known by the common name of Colorado alpine columbine.<ref name="NS var alpina" /> Though botanical writers such as Robert Nold doubt the validity of the variety.<ref name="Nold" /> It differs from the other varieties by having much smaller petal blades, only 13–17&nbsp;millimeters instead of 19–28&nbsp;millimeters.<ref name="FNA" /> It grows on open rocky slopes in the state of Wyoming at elevations of {{convert|2100-3500|m|ft|sp=us|-2}}. It always has pale blue sepals and flowers from June to August.<ref>{{cite web |last1=Whittemore |first1=Alan T. |title=''Aquilegia coerulea'' var. ''alpina'' - FNA |url=http://floranorthamerica.org/Aquilegia_coerulea_var._alpina |website=Flora of North America |access-date=18 June 2024 |date=}}</ref> [[NatureServe]] has not evaluated the variety since 2001, but at that time they listed it as vulnerable (T3), but they also list it as possibly [[extirpated]] from Wyoming and with an unevaluated status in Utah.<ref name="NS var alpina">{{cite web |last1=NatureServe |title=''Aquilegia caerulea'' var. ''alpina'' |url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.149068/Aquilegia_caerulea_var_alpina |access-date=18 June 2024 |location=Arlington, Virginia |date=2024}}</ref>

====''Aquilegia coerulea'' var. ''coerulea''====
[[File:Aquilegia coerulea var. coerulea 01.jpg|thumb|''Aquilegia coerulea'' var. ''coerulea'' photographed in [[Clear Creek County, Colorado]] ]]
Five species were described at various times that are considered [[heterotypic synonym]]s of this variety.<ref name="POWO var coerulea">{{cite POWO |id=77228400-1 |title=''Aquilegia coerulea'' var. ''coerulea'' |access-date=18 June 2024}}</ref> The [[Autonym (botany)|autonymic]] variety of the species grows in Wyoming, New Mexico, and Colorado at elevations of {{convert|2100-3500|m|ft|sp=us|-2}}.<ref name="FNA var coerulea">{{cite web |last1=Whittemore |first1=Alan T. |title=''Aquilegia coerulea'' var. ''coerulea'' - FNA |url=http://floranorthamerica.org/Aquilegia_coerulea_var._coerulea |website=Flora of North America |access-date=18 June 2024 |date=5 November 2020}}</ref> It is distinguished from the two following varieties by having medium to deep blue sepals where they have white, pale blue, or pink sepals.<ref name="FNA" /> It's sepals range in length from 28–43&nbsp;millimeters.<ref name="4Corners" /> The petals have spurs that are 34-48&nbsp;mm long while their blades are usually 20–24&nbsp;mm, though occasionally as short as 17&nbsp;mm. They grow on rocky slopes, near streams, in open woodlands, and in herb dominated meadows. They flower in the summer starting in mid-June and may flower as late as early September.<ref name="FNA var coerulea" /> NatureServe evaluated the variety in 2004 and found it to be apparently secure (T4) globally and in Wyoming. They did not evaluate the rest of its range.<ref name="NS var caerulea">{{cite web |last1=NatureServe |title=''Aquilegia caerulea'' var. ''caerulea'' |url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.153829/Aquilegia_caerulea_var_caerulea |access-date=18 June 2024 |location=Arlington, Virginia |date=2024}}</ref>

====''Aquilegia coerulea'' var. ''daileyae''====
[[File:Aquilegia coerulea var. daileyae - Owen Strickland 01.jpg|thumb|Spurless columbine photographed south of [[Estes Park, Colorado]] ]]
This disputed variety was described by the botanist [[Alice Eastwood]] in 1897.<ref name="POWO var coerulea" /> It is a variation where the petals lack spurs and both the petals and spurs are colored deep blue and commonly called '''spurless columbine''', but is also sometimes called '''Dailey's columbine'''.<ref>{{cite web |last1=Schneider |first1=Al |title=''Aquilegia coerulea'' variety ''daileyae'' |url=https://www.swcoloradowildflowers.com/Blue%20Purple%20Enlarged%20Photo%20Pages/aquilegia%20coerulea%20variety%20daileyae.htm |website=Southwest Colorado Wildflowers |access-date=20 June 2024 |language=en}}</ref><ref>{{cite usda plants|symbol=AQCOD |title=Aquilegia coerulea var. daileyae |date=19 July 2024}}</ref> The spurless columbine may be found in identical habitats to var. ''coerulea'', but only in the state of Colorado. From the foothills to alpine areas forest openings.<ref>{{cite book |last1=Guennel |first1=G. K. |title=Guide to Colorado Wildflowers |date=1995 |publisher=Westcliffe |location=Englewood, Colorado |isbn=978-1-56579-118-3 |page=325 |url=https://archive.org/details/guidetocoloradow0000guen/page/325 |access-date=19 July 2024 |language=en}}</ref> Colorado resident Anna Dailey collected specimens of the spurless columbine near [[Evergreen, Colorado]] and sent them to Eastwood. A genetic mutation causes the petals to be replaced with a second set of sepals. The population continues to reproduce in and near the Reynolds Park open space in [[Jefferson County, Colorado]].<ref name="Cabin" />
They are also found around [[Estes Park, Colorado]] near [[Rocky Mountain National Park]].<ref name="Nold" /> Though lacking parts to produce nectar the flowers are still pollinated by bumblebees, which collect pollen from the plants.<ref name="Cabin">{{cite journal |last1=Cabin |first1=Zac |title=''Aquilegia coerulea'' and the Evolution of the Spurless Mutant var. ''daileyae'' |journal=Aquilegia |date=2019 |volume=43 |issue=3 |page=24-26 |url=https://archive.org/details/aquilegia43colob/aquilegia43colob/page/24 |access-date=19 July 2024 |publisher=Colorado Native Plant Society |location=Fort Collins, Colorado}}</ref>

====''Aquilegia coerulea'' var. ''ochroleuca''====
[[File:Aquilegia coerulea var. ochroleuca - Whitney Brook Matson 01.jpg|thumb|''Aquilegia coerulea'' var. ''ochroleuca'', a white flowered form photographed in [[Teton County, Wyoming]]]]
[[William Jackson Hooker]] described this variety in 1864. It had previously been described as a species by [[Thomas Nuttall]] in 1834 with the name ''Aquilegia leptoceras''. This species name was also unnecessarily reclassified as ''Aquilegia coerulea'' var. ''leptoceras'' by Aven Nelson in 1909. It was inadvertently described by [[Asa Gray]] as ''Aquilegia coerulea'' var. ''albiflora'' in 1895 from which it was reclassified by [[Edwin Blake Payson]] as a [[subspecies]] in 1918.<ref name="POWO var ochroleuca">{{cite POWO |id=60441871-2 |title=''Aquilegia coerulea'' var. ''ochroleuca'' Hook. |access-date=18 June 2024}}</ref> It differs from var. ''coerulea'' by having lighter blue or white sepals (occasionally pink) and from var. ''pinetorum'' by having shorter flower spurs (usually 40–48&nbsp;mm, but possibly 36–54&nbsp;mm) and shorter stamens (13–18&nbsp;mm).<ref name="FNA" /> It grows in Idaho, Montana, Nevada, Utah, and Wyoming at elevations of {{convert|2000-3600|m|ft|sp=us|-2}}. It flowers as early as late June and may bloom as late as August.<ref>{{cite web |last1=Whittemore |first1=Alan T. |title=''Aquilegia coerulea'' var. ''ochroleuca'' - FNA |url=http://floranorthamerica.org/Aquilegia_coerulea_var._ochroleuca |website=Flora of North America |access-date=18 June 2024 |date=5 November 2020}}</ref> It is commonly known as '''white Colorado columbine''', despite the fact that it may have light blue or pink sepals. When it was evaluated by NatureServe in 2004, they assigned it the status of apparently secure (T4).<ref>{{cite web |last1=NatureServe |title=''Aquilegia caerulea'' var. ''ochroleuca'' |url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.141448/Aquilegia_caerulea_var_ochroleuca |access-date=20 June 2024 |location=Arlington, Virginia |date=2024}}</ref>

====''Aquilegia coerulea'' var. ''pinetorum''====
This variety was first described as a species with the name ''Aquilegia pinetorum'' in 1910 by Ivar (Frederick) Tidestrøm (1864-1956). In 1918 Edwin Blake Payson described it as subspecies of ''Aquilegia coerulea'' and in 1942 [[Thomas Henry Kearney]] and [[Robert Hibbs Peebles]] gave it the present classification as ''Aquilegia coerulea'' var. ''pinetorum''.<ref name="POWO var pinetorum">{{cite POWO |id=60441872-2 |title=''Aquilegia coerulea'' var. ''pinetorum'' (Tidestr.) Payson ex Kearney & Peebles |access-date=18 June 2024}}</ref> Like var. ''ochroleuca'' it may have white to pale blue sepals, occasionally light pink, while it has longer petal spurs (usually 50–58&nbsp;mm, but ranging from 45–72&nbsp;mm) and longer flower stamens (17–24&nbsp;mm).<ref name="FNA" /> This variety is found in Utah and Arizona at elevations of {{convert|1800-3400|m|ft|sp=us|-2}}. They may flower starting in May or as late as September.<ref name="FNA var pinetorum">{{cite web |last1=Whittemore |first1=Alan T. |title=''Aquilegia coerulea'' var. ''pinetorum'' - FNA |url=http://floranorthamerica.org/Aquilegia_coerulea_var._pinetorum |access-date=18 June 2024 |date=5 November 2020}}</ref>

===Names===
The genus name, ''Aquilegia'', is frequently said to mean "eagle-like". The author [[Bill Casselman (writer)|Bill Casselman]] strongly asserts this to be incorrect and that the name derives from the Latin adjective "aquilegus" with the meaning "drawing water".<ref name="Casselman" /> The species name, ''coerulea'', is also Latin meaning "sky-blue" or "dark-blue".<ref name="Casselman">{{cite book |last1=Casselman |first1=Bill |title=Canadian Garden Words : The Origin of Flower, Tree, and Plant Names, both wild and domestic, entertainingly derived from their sources in the Ancient Toungues together with Fancy Botanical Names & Why You Shall Never Again Be Afraid To Use Them! |date=1997 |publisher=Little, Brown (Canada) |location=Toronto, Canada |isbn=978-0-316-13343-2 |pages=147-148 |edition=1st |url=https://archive.org/details/canadiangardenwo0000cass_e9c9/page/147 |access-date=8 June 2024 |language=en}}</ref>

Two of the most frequently used [[common name]]s in English are ''Colorado columbine'' and ''Colorado blue columbine''.<ref name="Alpine Wldflrs" /><ref name="Dodson & Dunmire">{{cite book |last1=Dodson |first1=Carolyn |last2=Dunmire |first2=William W. |title=Mountain Wildflowers of the Southern Rockies : Revealing Their Natural History |date=2007 |publisher=University of New Mexico Press |location=Albuquerque, New Mexico |isbn=978-0-8263-4244-7 |pages=6-7 |url=https://archive.org/details/mountainwildflow0000dods/page/6 |access-date=8 June 2024 |language=en}}</ref> However, the species is also called ''Rocky Mountain columbine'' for its wider natural range,<ref name="High-elevation gardens">{{cite book |last1=Busco |first1=Janice |last2=Morin |first2=Nancy R. |title=Native Plants for High-elevation Western Gardens |date=2010 |publisher=Fulcrum |location=Golden, Colorado |isbn=978-1-55591-740-1 |pages=50-51 |url=https://archive.org/details/nativeplantsforh0000busc/page/50 |access-date=8 June 2024 |language=en}}</ref> however this name is also infrequently applied to ''[[Aquilegia saximontana]]''.<ref>{{cite book |last1=Nelson |first1=Ruth |title=Plants of Rocky Mountain National Park |date=1953 |publisher=United States Department of the Interior, National Park Service |location=Washington, D.C. |page=75 |edition=Revised |url=https://archive.org/details/plantsofrockymou00plant/page/75 |access-date=6 July 2024 |language=en}}</ref> The common name ''columbine'' is suggested to be related to the Latin for "Dove" for a resemblance of five doves drinking at a fountain.<ref name="Dodson & Dunmire" /> ''Aquilegia coerulea'' is also known as ''blue columbine'' or simply as ''columbine'',<ref name="WF Meadow">{{cite book |last1=Martin |first1=Laura C. |title=The Wildflower Meadow Book : A Gardener's Guide |date=1986 |publisher=East Woods Press |location=Charlotte, North Carolina |isbn=978-0-88742-065-8 |page=212, 214 |url=https://archive.org/details/wildflowermeadow0000mart/page/214 |access-date=20 June 2024}}</ref><ref>{{cite book |last1=Jones |first1=Charlotte Foltz |title=Colorado Wildflowers : A Beginner's Field Guide to the State's Most Common Flowers |date=1994 |publisher=Falcon Press Pub. |location=Billings, Montana |isbn=978-1-56044-266-0 |page=14 |url=https://archive.org/details/coloradowildflow0000jone/page/14 |access-date=20 June 2024}}</ref> though ''[[Aquilegia brevistyla]]'' is occasionally known as blue columbine and many species are casually called columbines such as ''[[Aquilegia canadensis]]''.<ref>{{cite book |last1=Bush |first1=C. Dana |title=The Compact Guide to Wildflowers of the Rockies |date=1990 |publisher=Lone Pine |location=Edmonton, Alberta |isbn=978-0-919433-57-1 |page=56 |url=https://archive.org/details/compactguidetowi0000bush/page/56 |access-date=20 June 2024}}</ref><ref name="WF Meadow" />

In the [[Gosiute dialect]] of the [[Shoshoni language]] ''Aquilegia coerulea'' is called either ''pa'-wa-gúmp'' or ''pa'-o-gûm-pi'' as recorded by [[Ralph Vary Chamberlin]].<ref name="Chamberlin">{{cite journal |last1=Chamberlin |first1=Ralph V. |title=The Ethno-Botany of the Gosiute Indians |journal=Proceedings of the Academy of Natural Sciences of Philadelphia |date=1911 |volume=63 |issue=1 |pages=24–99 |url=https://www.jstor.org/stable/4063364 |access-date=19 July 2024 |issn=0097-3157}}</ref>

==Range and habitat==
[[File:Aquilegia coerulea - José Garrido 01.jpg|thumb|Meadow of ''Aquilegia coerulea'' in the [[San Juan National Forest]] ]]
Colorado columbine is native to the Rocky Mountains from northern New Mexico to southern Montana. It grows in all of the mountainous western half of Colorado and Wyoming. Additionally it grows in every county of Utah, parts of Nevada, and northern Arizona. It is listed by the USDA as growing in Idaho and South Dakota, but without county level distributions.<ref name="USDA">{{cite usda plants|symbol=AQCO |title=Aquilegia coerulea |date=19 June 2024}}</ref> The species was reported to grow in the [[Caribou–Targhee National Forest]] in eastern Idaho in 1973.<ref>{{cite journal |last1=Henderson |first1=Douglass M. |title=Notes on the Flora of East-central Idaho |journal=Madroño |date=1978 |volume=25 |issue=3 |page=173 |url=https://www.jstor.org/stable/41424165 |access-date=19 July 2024 |issn=0024-9637}}</ref>

Rocky Mountain columbine grows in mountainous areas, starting at elevations lower elevations with the Rocky Mountain variety of the [[Douglas-fir]]. They become more common at higher elevations in [[montane ecosystems]] and [[subalpine]] habitats with some growing above timberline in the [[alpine tundra]].<ref name="Dodson & Dunmire" /> The lowest elevations where they grow naturally is {{convert|1800|m|ft|sp=us}} for ''Aquilegia coerulea'' var. ''pinetorum'' and the highest is {{convert|3600|m|ft|sp=us}} for ''Aquilegia coerulea'' var. ''coerulea'' in the southern Rocky Mountains.<ref name="FNA var pinetorum" /><ref name="FNA var coerulea" /> This species of columbine grows poorly in heavy soils without good drainage. However, it prefers moist areas and is very often found in [[quaking aspen]] groves.<ref>{{cite web |title=Range Plants of Utah: Colorado Columbine |url=https://extension.usu.edu/rangeplants/forbs-herbaceous/colorado-columbine |website=Utah Extension |publisher=Utah State University |access-date=7 July 2024 |language=en}}</ref> It will also grow in the open coniferous forests, meadows, and in clearings.<ref name="4Corners" /> When there is sufficient water they will thrive on rocky outcrops and slopes.<ref name="Meet the Natives" />

==Ecology==
Within its natural range ''Aquilegia coerulea'' is most often pollinated by [[hawkmoth]]s and [[bumblebee]]s. Specific species of hawkmoth include ''[[Hyles lineata]]'' and ''[[Sphinx vashti]]''.<ref name="Outcrossing">{{cite journal |last1=Brunet |first1=Johanne |last2=Sweet |first2=Heather R. |title=Impact of Insect Pollinator Group and Floral Display Size on Outcrossing Rate |journal=Evolution |date=February 2006 |volume=60 |issue=2 |pages=234–246 |doi=10.1111/j.0014-3820.2006.tb01102.x}}</ref> The bumblebees include ''[[Bombus appositus]]'', but ''[[Bombus flavifrons]]'' visit the flowers much more frequently. Hawkmoths visit most often during the night while bumblebees only visit during daylight hours.<ref>{{cite journal |last1=Brunet |first1=Johanne |last2=Holmquist |first2=Karsten G. A. |title=The influence of distinct pollinators on female and male reproductive success in the Rocky Mountain columbine |journal=Molecular Ecology |date=September 2009 |volume=18 |issue=17 |pages=3745–3758 |doi=10.1111/j.1365-294X.2009.04304.x}}</ref> The plants are have the highest rate of [[cross-fertilization]] between plants in areas where the number of flowers is smaller and the population of hawkmoths is highest.<ref name="Outcrossing" />

The [[western bumblebee]] (''Bombus occidentalis'') has been observed [[nectar robbing]] from ''Aquilegia coerulea'' by opening or using holes cut in the spurs.<ref>{{cite journal |last1=Pyke |first1=Graham H. |title=Local Geographic Distributions of Bumblebees Near Crested Butte, Colorado: Competition and Community Structure |journal=Ecology |date=1982 |volume=63 |issue=2 |pages=555–573 |doi=10.2307/1938970 |url=https://www.jstor.org/stable/1938970 |access-date=3 July 2024 |issn=0012-9658}}</ref> Though prior to its decline in numbers in the 21st century they were also a significant pollinator of the species in some areas.<ref name="White flowers">{{cite journal |last1=Brunet |first1=Johanne |title=Pollinators of the Rocky Mountain columbine: temporal variation, functional groups and associations with floral traits |journal=Annals of Botany |date=2009 |volume=103 |issue=9 |pages=1567–1578 |doi=10.1093/aob/mcp096 |url=https://www.jstor.org/stable/43576245 |access-date=3 July 2024 |issn=0305-7364|pmc=2701757 }}</ref> The
[[broad-tailed hummingbird]] also visits the blooms, but at a much lower rate than moths or bees.<ref>{{cite journal |last1=Miller |first1=Russell B. |title=The Pollination Ecology of Aquilegia Elegantula and A. Caerulea (Ranunculaceae) in Colorado |journal=American Journal of Botany |date=1978 |volume=65 |issue=4 |pages=406–414 |doi=10.2307/2442696 |url=https://www.jstor.org/stable/2442696 |access-date=3 July 2024 |issn=0002-9122}}</ref>

The wildflower authors [[Frank and John Craighead]] attributed a decline in the population of the species to [[overgrazing]] by sheep and cattle in 1963.<ref name="Craighead" />

==Uses==
===Culture===
Though it is not the standard form for a columbine, the long spurs and shape of the Colorado columbine's flower is the most recognized in the genus.<ref name="Nold" /> The white and lavender variety of the columbine was officially instituted as the [[List of Colorado state symbols|flower symbol of Colorado]] on 4 April 1899 by an act of the [[Colorado General Assembly]]. In 1925 the species was protected by law in Colorado, preventing needless destruction or waste of the flowers. It prohibits the digging or uprooting Colorado columbine plants on public lands and prohibits picking more than twenty-five flowers, buds, or stems in one day.<ref>{{cite web |title=Symbols & Emblems |url=https://archives.colorado.gov/collections/symbols-emblems |website=Colorado State Archives |publisher=State of Colorado |access-date=19 June 2024}}</ref> In the 1890s there was also a group called the Columbine Association that sought to establish it as the national flower of the United States.<ref>{{cite journal |last1=Sargent |first1=Frederick Leroy |title=The National Flower Movement |journal=Transactions of the Massachusetts Horticultural Society |date=1898 |pages=109-134 |url=https://archive.org/details/transactionsofma1898mass/page/109 |access-date=27 June 2024 |location=Boston}}</ref>

===Cultivation===
[[File:Aquilegia caerulea 'Crimson Star' Spectral comparison Vis UV IR.jpg|thumb|'Crimson star' in visible light, UV (showing [[nectar guide]]s), and infrared]]
''Aquilegia coerulea'' is used as an [[ornamental plant]] in gardens.<ref name="High-elevation gardens" /> The species was adoped as a garden plant very soon after its scientific description, with its introduction to the United Kingdom coming in 1864.<ref name="Dodson & Dunmire" /> It is also planted in American gardens for its attractiveness to hummingbirds.<ref name="High-elevation gardens" /> They are tollerant of damage by deer and rabbits.<ref name="MO Botanical" /> It is also recommended as an attractive plant for revegitation of mountain roadsides in its native range by the Office of Natural Environment in the Federal Highway Administration.<ref>{{cite book |editor1-last=Harper-Lore |editor1-first=Bonnie |editor2-last=Wilson |editor2-first=Maggie |title=Roadside Use of Native Plants |date=1999 |publisher=Federal Highway Administration |location=Washington, D.C. |pages=76, 171, 309, 329, 355, 501, 559}}</ref> When planting large areas it is seeded at a rate of 112&nbsp;ounces per acre.<ref name="WF Meadow" />

Colorado columbine is winter hardy in [[USDA zone]]s 3–8.<ref name="High-elevation gardens" /> Plants in cultivation grow most successfully in average to medium garden soil that is well drained and even moisture. They may be grown by gardeners in full sun or partial shade.<ref name="MO Botanical">{{cite web |title=''Aquilegia caerulea'' |url=https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=286266 |website=Plant Finder |publisher=Missouri Botanical Garden |access-date=19 June 2024}}</ref> It is propagated both by seed and the division of plants.<ref name="High-elevation gardens" />

Colorado columbine is vulnerable [[powdery mildew]]s, particularly when its leaves are regularly wetted by overhead irrigation.<ref name="High-elevation gardens" /> It is also susceptible to infestation by [[aphid]]s,<ref name="RHS">{{cite web |title=''Aquilegia coerulea'' Rocky Mountain columbine |url=https://www.rhs.org.uk/plants/138475/aquilegia-coerulea/details |website=RHS Gardening |publisher=Royal Horticultural Society |access-date=20 June 2024 |language=en-gb}}</ref> though not more than other species of columbine.<ref name="Nold" /> Plants can also be attacked by leaf-mining flies and sawflies.<ref name="RHS" />

The treatment of seeds with [[gibberellic acid]] and planting at {{convert|21|C|F}} results in 93% germination after three weeks. The seeds also display resistance to sprouting without treatment with none sprouting when planted at 21 °C and 40% germination after two weeks after first being cold stratified at {{convert|4.5|C|F|0}}.<ref>{{cite journal |last1=Love |first1=Stephen L |last2=Akins |first2=Candace J |title=Summary of the native seed germination studies of Norman C Deno: species with names beginning with letters A and B |journal=Native Plants Journal |date=2018 |volume=19 |issue=3 |pages=269–270 |doi=10.3368/npj.19.3.260}}</ref> When grown in gardens plants will last three or four years a most and often are treated by gardeners like a biennial.<ref name="Nold" />

Its natural variability and ease of hybridization with other columbines is exploited in the selection of numerous [[cultivar]]s in different shades. This is a drawback to gardeners seeking to have standard blue and white columbines, often requiring them to seek collected seeds rather than replanting. The cultivars that are probably entirely or largely derived from Rocky Mountain columbine include 'alba', 'albiflora', and 'snow queen'. Cultivars that are thought to be significatly of ''A.&nbsp;coerulea'' ancestry include 'crimson star' and 'rose queen'.<ref name="Nold" /> While the 'origami mix' hybirds, originally developed by Goldsmith Seeds,<ref>{{cite book |last1=Fell |first1=Derek |title=Derek Fell's Grow This! |date=2013 |publisher=Rodale |location=New York |isbn=978-1-60961-826-1 |pages=144-145}}</ref> are listed by some sources as being derived from ''A.&nbsp;coerulea'' others list it as being from ''[[Aquilegia vulgaris]]''.<ref>{{cite web |title=''Aquilegia'' x ''caerulea'' 'Origami Mix' |url=http://www.perennialresource.com/variety.php?ID=AQUOM |website=Perennial Resource |publisher=Walters Gardens, Inc. |access-date=19 June 2024}}</ref><ref>{{cite web |title=Columbine 'Origami' (''Aquilegia vulgaris'') |url=https://mygardenlife.com/plant-library/columbine-origami-aquilegia-vulgaris |website=MyGardenLife |access-date=19 June 2024}}</ref>

==Reflist==
{{reflist}}


==External links==
==External links==
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[[Category:Aquilegia|coerulea]]
[[Category:Aquilegia|coerulea]]
[[Category:Flora of Arizona]]
[[Category:Flora of Colorado]]
[[Category:Flora of Colorado]]
[[Category:Flora of Idaho]]
[[Category:Flora of Montana]]
[[Category:Flora of Nevada]]
[[Category:Flora of New Mexico]]
[[Category:Flora of South Dakota]]
[[Category:Flora of Utah]]
[[Category:Flora of Wyoming]]
[[Category:Flora of the Rocky Mountains]]
[[Category:Flora of the Rocky Mountains]]
[[Category:Garden plants of North America]]
[[Category:Garden plants of North America]]
[[Category:Symbols of Colorado]]
[[Category:Symbols of Colorado]]


{{Ranunculales-stub}}

Revision as of 19:07, 19 September 2024

Aquilegia coerulea

Secure  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Ranunculaceae
Genus: Aquilegia
Species:
A. coerulea
Binomial name
Aquilegia coerulea
Varieties
  • Aquilegia coerulea var. alpina A.Nelson
  • Aquilegia coerulea var. coerulea
  • Aquilegia coerulea var. ochroleuca Hook.
  • Aquilegia coerulea var. pinetorum (Tidestr.) Payson ex Kearney & Peebles
Synonyms[2]
List
    • Aquilegia canadensis subsp. coerulea (E.James) Brühl
    • Aquilegia formosa subsp. coerulea (E.James) Brühl

Aquilegia coerulea, the Colorado columbine, Rocky Mountain columbine, or blue columbine, is a species of flowering plant in the buttercup family Ranunculaceae, native to the Rocky Mountains and some of the surrounding states of the western United States. It is the state flower of Colorado. The Latin specific name coerulea (or caerulea) means "sky blue".

Description

Aquilegia coerulea is a herbaceous plant with flowering stems that may be 15–80 centimeters (6–31 in) when fully grown.[3] Its leaves are on stems that are always shorter than the flowering stems, just 9–37 cm (4–15 in) and are compound leaves that usually have three leaflets on three components (biternate), but occasionally may be simpler with just three leaflets (trifoliate) or more complex (tripinnate).[4] Each leaflet is quite thin, smooth and hairless on the upper side (glabrous), and green. They may either be glabrous or covered in fine, minute hairs on the underside of the leaf (pubescent) and have three lobes.[5][6] Leaflets most often range in size from 13–42 mm (121+58 in), but occasionally may be as long as 61 mm (2+38 in).[4]

The plant flower buds nod, facing somewhat downward.[7] The flowers are large and showy with a diameter of as much as 15 centimeters (6 in),[5] but more often about 5–10 cm (2–4 in).[8] They are so striking that the botanists E. O. Wooton and Paul C. Standley enthusiastically wrote of them in their 1915 Flora of New Mexico,[5]

"This is the State flower of Colorado and no other State has one so beautiful. Few indeed are the flowers of the Rockies that can compare with this in beauty. The great blossoms, sometimes six inches in diameter, look like bits of fallen sky, and when the plants cover acres of meadow, as they sometimes do, no words can be found to do them justice."[9]

The flowers are atop stems that stand perpendicular to the ground (erect) with the outer five sepals in shades of white to deep-blue or occasionally pink in their wild condition.[3] The sepals range in shape from a flattened circle with somewhat pointed ends with the widest part moved toward the base (elliptic-ovate) to like a somewhat egg shaped spear head (lance-ovate). They range in size from 26–51 millimeters long and 8–23 millimeters wide.[4]

The five petals have very long tapered spurs,[10] ranging from 25–72 millimeters in length, though usually longer than 34 mm.[4][3] The blades of the petals are 13–28 mm long by 5–14 mm wide.[4] Petals are most often white to cream in color at the front with the spurs the same color as the sepals.[11][12]

The center of the flower has a projecting cluster of numerous bright orange-yellow stamens, 50–130 total.[10][13] The stamens range in length from 13 to 24 mm.[4] They surround five to ten unfused carpels. If fertilized each of the carpels may develop into a dry pod that splits along one side (a follicle).[13] Each of the pods is round in cross section and is filled with small, smooth, black seeds.[14]

The leaves may be mistaken for that of a meadowrue (Thalictrum), but the flowers are entirely different and the species cannot be confused while flowering.[11] Similar columbines in its range include Aquilegia scopulorum, Aquilegia jonesii, and Aquilegia micrantha. Aquilegia scopulorum has leaves that are covered in natural waxes making them blue-green (glaucous) rather than green. It is found in Nevada and Utah. Aquilegia jonesii has much shorter spurs on its flowers, just 8-15 mm and grows to the north in Wyoming, Montana, and Alberta. Aquilegia micrantha has very sticky leaves (viscid).[14]

Taxonomy

Blue columbine painted by Mary Emily Eaton, 1917

The first scientific description of Aquilegia coerulea was by the American scientist Edwin James in 1822.[2] Though Aquilegia coerulea was the original spelling by James, it has often been spelled as Aquilegia caerulea as this is more correct Latin. However, the rules of taxonomic nomenclature generally prefer the original spelling and this is the name adopted by the Board of International Botanic Nomenclature. James found the first specimen he collected in a thicket of scrub oak near what is today Palmer Lake, Colorado while on the Stephen H. Long Expedition of 1820.[15] After James's description seven species, six subspecies, five varieties, and two botanical forms have been described that are considered to be synonyms of the species or one of its four varieties.[2][16][17][18][19]

Table of Synonyms
Name Year Rank Synonym of: Notes
Aquilegia advena Regel 1856 species var. coerulea = het.
Aquilegia caerulea E.James 1823 species var. coerulea = het. orth. var.
Aquilegia canadensis subsp. coerulea (E.James) Brühl 1893 subspecies Aquilegia coerulea ≡ hom.
Aquilegia coerulea subsp. albiflora A.Gray ex Payson 1918 subspecies var. ochroleuca ≡ hom.
Aquilegia coerulea var. albiflora A.Gray 1895 variety var. ochroleuca ≡ hom. nom. superfl.
Aquilegia coerulea subsp. alpina (A.Nelson) Payson 1918 subspecies var. alpina ≡ hom.
Aquilegia coerulea subsp. daileyae (Eastw.) Payson 1918 subspecies var. coerulea = het.
Aquilegia coerulea var. daileyae Eastw. 1897 variety var. coerulea = het.
Aquilegia coerulea f. glandulosa Cockerell 1891 form var. coerulea = het.
Aquilegia coerulea var. leptoceras (Nutt.) A.Nelson 1909 variety var. ochroleuca ≡ hom. nom. superfl.
Aquilegia coerulea var. macrantha (Hook. & Arn.) Brühl 1893 variety var. coerulea = het.
Aquilegia coerulea f. pallidiflora Cockerell 1891 form var. coerulea = het.
Aquilegia coerulea subsp. pinetorum (Tidestr.) Payson 1918 subspecies var. pinetorum ≡ hom.
Aquilegia formosa subsp. coerulea (E.James) Brühl 1893 subspecies Aquilegia coerulea ≡ hom.
Aquilegia formosa var. macrantha (Hook. & Arn.) Brühl 1893 variety var. coerulea = het.
Aquilegia leptoceras Nutt. 1834 species var. ochroleuca ≡ hom.
Aquilegia macrantha Hook. & Arn. 1838 species var. coerulea = het.
Aquilegia oreophila Rydb. 1902 species var. coerulea = het.
Aquilegia piersoniana L.O.Williams 1934 species var. coerulea = het.
Aquilegia pinetorum Tidestr. 1910 species var. pinetorum ≡ hom.
Notes: ≡ homotypic synonym ; = heterotypic synonym

Sequencing of the genome of this species has advanced the study of the evolution of basal eudicots.[20][21]

Varieties

There are four widely accepted varieties of Aquilegia coerulea according to Plants of the World Online,[2] World Flora Online,[22] and World Plants.[23] Though World Plants additionally lists Aquilegia coerulea var. daileyae Eastw. as valid as does the USDA Natural Resources Conservation Service PLANTS database.[23][24]

Aquilegia coerulea var. alpina

This variety was scientifically described by the botanist Aven Nelson in 1896.[16] It is known by the common name of Colorado alpine columbine.[25] Though botanical writers such as Robert Nold doubt the validity of the variety.[5] It differs from the other varieties by having much smaller petal blades, only 13–17 millimeters instead of 19–28 millimeters.[4] It grows on open rocky slopes in the state of Wyoming at elevations of 2,100–3,500 meters (6,900–11,500 ft). It always has pale blue sepals and flowers from June to August.[26] NatureServe has not evaluated the variety since 2001, but at that time they listed it as vulnerable (T3), but they also list it as possibly extirpated from Wyoming and with an unevaluated status in Utah.[25]

Aquilegia coerulea var. coerulea

Aquilegia coerulea var. coerulea photographed in Clear Creek County, Colorado

Five species were described at various times that are considered heterotypic synonyms of this variety.[17] The autonymic variety of the species grows in Wyoming, New Mexico, and Colorado at elevations of 2,100–3,500 meters (6,900–11,500 ft).[27] It is distinguished from the two following varieties by having medium to deep blue sepals where they have white, pale blue, or pink sepals.[4] It's sepals range in length from 28–43 millimeters.[3] The petals have spurs that are 34-48 mm long while their blades are usually 20–24 mm, though occasionally as short as 17 mm. They grow on rocky slopes, near streams, in open woodlands, and in herb dominated meadows. They flower in the summer starting in mid-June and may flower as late as early September.[27] NatureServe evaluated the variety in 2004 and found it to be apparently secure (T4) globally and in Wyoming. They did not evaluate the rest of its range.[28]

Aquilegia coerulea var. daileyae

Spurless columbine photographed south of Estes Park, Colorado

This disputed variety was described by the botanist Alice Eastwood in 1897.[17] It is a variation where the petals lack spurs and both the petals and spurs are colored deep blue and commonly called spurless columbine, but is also sometimes called Dailey's columbine.[29][30] The spurless columbine may be found in identical habitats to var. coerulea, but only in the state of Colorado. From the foothills to alpine areas forest openings.[31] Colorado resident Anna Dailey collected specimens of the spurless columbine near Evergreen, Colorado and sent them to Eastwood. A genetic mutation causes the petals to be replaced with a second set of sepals. The population continues to reproduce in and near the Reynolds Park open space in Jefferson County, Colorado.[32] They are also found around Estes Park, Colorado near Rocky Mountain National Park.[5] Though lacking parts to produce nectar the flowers are still pollinated by bumblebees, which collect pollen from the plants.[32]

Aquilegia coerulea var. ochroleuca

Aquilegia coerulea var. ochroleuca, a white flowered form photographed in Teton County, Wyoming

William Jackson Hooker described this variety in 1864. It had previously been described as a species by Thomas Nuttall in 1834 with the name Aquilegia leptoceras. This species name was also unnecessarily reclassified as Aquilegia coerulea var. leptoceras by Aven Nelson in 1909. It was inadvertently described by Asa Gray as Aquilegia coerulea var. albiflora in 1895 from which it was reclassified by Edwin Blake Payson as a subspecies in 1918.[18] It differs from var. coerulea by having lighter blue or white sepals (occasionally pink) and from var. pinetorum by having shorter flower spurs (usually 40–48 mm, but possibly 36–54 mm) and shorter stamens (13–18 mm).[4] It grows in Idaho, Montana, Nevada, Utah, and Wyoming at elevations of 2,000–3,600 meters (6,600–11,800 ft). It flowers as early as late June and may bloom as late as August.[33] It is commonly known as white Colorado columbine, despite the fact that it may have light blue or pink sepals. When it was evaluated by NatureServe in 2004, they assigned it the status of apparently secure (T4).[34]

Aquilegia coerulea var. pinetorum

This variety was first described as a species with the name Aquilegia pinetorum in 1910 by Ivar (Frederick) Tidestrøm (1864-1956). In 1918 Edwin Blake Payson described it as subspecies of Aquilegia coerulea and in 1942 Thomas Henry Kearney and Robert Hibbs Peebles gave it the present classification as Aquilegia coerulea var. pinetorum.[19] Like var. ochroleuca it may have white to pale blue sepals, occasionally light pink, while it has longer petal spurs (usually 50–58 mm, but ranging from 45–72 mm) and longer flower stamens (17–24 mm).[4] This variety is found in Utah and Arizona at elevations of 1,800–3,400 meters (5,900–11,200 ft). They may flower starting in May or as late as September.[35]

Names

The genus name, Aquilegia, is frequently said to mean "eagle-like". The author Bill Casselman strongly asserts this to be incorrect and that the name derives from the Latin adjective "aquilegus" with the meaning "drawing water".[36] The species name, coerulea, is also Latin meaning "sky-blue" or "dark-blue".[36]

Two of the most frequently used common names in English are Colorado columbine and Colorado blue columbine.[6][15] However, the species is also called Rocky Mountain columbine for its wider natural range,[37] however this name is also infrequently applied to Aquilegia saximontana.[38] The common name columbine is suggested to be related to the Latin for "Dove" for a resemblance of five doves drinking at a fountain.[15] Aquilegia coerulea is also known as blue columbine or simply as columbine,[39][40] though Aquilegia brevistyla is occasionally known as blue columbine and many species are casually called columbines such as Aquilegia canadensis.[41][39]

In the Gosiute dialect of the Shoshoni language Aquilegia coerulea is called either pa'-wa-gúmp or pa'-o-gûm-pi as recorded by Ralph Vary Chamberlin.[42]

Range and habitat

Meadow of Aquilegia coerulea in the San Juan National Forest

Colorado columbine is native to the Rocky Mountains from northern New Mexico to southern Montana. It grows in all of the mountainous western half of Colorado and Wyoming. Additionally it grows in every county of Utah, parts of Nevada, and northern Arizona. It is listed by the USDA as growing in Idaho and South Dakota, but without county level distributions.[43] The species was reported to grow in the Caribou–Targhee National Forest in eastern Idaho in 1973.[44]

Rocky Mountain columbine grows in mountainous areas, starting at elevations lower elevations with the Rocky Mountain variety of the Douglas-fir. They become more common at higher elevations in montane ecosystems and subalpine habitats with some growing above timberline in the alpine tundra.[15] The lowest elevations where they grow naturally is 1,800 meters (5,900 ft) for Aquilegia coerulea var. pinetorum and the highest is 3,600 meters (11,800 ft) for Aquilegia coerulea var. coerulea in the southern Rocky Mountains.[35][27] This species of columbine grows poorly in heavy soils without good drainage. However, it prefers moist areas and is very often found in quaking aspen groves.[45] It will also grow in the open coniferous forests, meadows, and in clearings.[3] When there is sufficient water they will thrive on rocky outcrops and slopes.[8]

Ecology

Within its natural range Aquilegia coerulea is most often pollinated by hawkmoths and bumblebees. Specific species of hawkmoth include Hyles lineata and Sphinx vashti.[46] The bumblebees include Bombus appositus, but Bombus flavifrons visit the flowers much more frequently. Hawkmoths visit most often during the night while bumblebees only visit during daylight hours.[47] The plants are have the highest rate of cross-fertilization between plants in areas where the number of flowers is smaller and the population of hawkmoths is highest.[46]

The western bumblebee (Bombus occidentalis) has been observed nectar robbing from Aquilegia coerulea by opening or using holes cut in the spurs.[48] Though prior to its decline in numbers in the 21st century they were also a significant pollinator of the species in some areas.[49] The broad-tailed hummingbird also visits the blooms, but at a much lower rate than moths or bees.[50]

The wildflower authors Frank and John Craighead attributed a decline in the population of the species to overgrazing by sheep and cattle in 1963.[11]

Uses

Culture

Though it is not the standard form for a columbine, the long spurs and shape of the Colorado columbine's flower is the most recognized in the genus.[5] The white and lavender variety of the columbine was officially instituted as the flower symbol of Colorado on 4 April 1899 by an act of the Colorado General Assembly. In 1925 the species was protected by law in Colorado, preventing needless destruction or waste of the flowers. It prohibits the digging or uprooting Colorado columbine plants on public lands and prohibits picking more than twenty-five flowers, buds, or stems in one day.[51] In the 1890s there was also a group called the Columbine Association that sought to establish it as the national flower of the United States.[52]

Cultivation

'Crimson star' in visible light, UV (showing nectar guides), and infrared

Aquilegia coerulea is used as an ornamental plant in gardens.[37] The species was adoped as a garden plant very soon after its scientific description, with its introduction to the United Kingdom coming in 1864.[15] It is also planted in American gardens for its attractiveness to hummingbirds.[37] They are tollerant of damage by deer and rabbits.[53] It is also recommended as an attractive plant for revegitation of mountain roadsides in its native range by the Office of Natural Environment in the Federal Highway Administration.[54] When planting large areas it is seeded at a rate of 112 ounces per acre.[39]

Colorado columbine is winter hardy in USDA zones 3–8.[37] Plants in cultivation grow most successfully in average to medium garden soil that is well drained and even moisture. They may be grown by gardeners in full sun or partial shade.[53] It is propagated both by seed and the division of plants.[37]

Colorado columbine is vulnerable powdery mildews, particularly when its leaves are regularly wetted by overhead irrigation.[37] It is also susceptible to infestation by aphids,[55] though not more than other species of columbine.[5] Plants can also be attacked by leaf-mining flies and sawflies.[55]

The treatment of seeds with gibberellic acid and planting at 21 °C (70 °F) results in 93% germination after three weeks. The seeds also display resistance to sprouting without treatment with none sprouting when planted at 21 °C and 40% germination after two weeks after first being cold stratified at 4.5 °C (40 °F).[56] When grown in gardens plants will last three or four years a most and often are treated by gardeners like a biennial.[5]

Its natural variability and ease of hybridization with other columbines is exploited in the selection of numerous cultivars in different shades. This is a drawback to gardeners seeking to have standard blue and white columbines, often requiring them to seek collected seeds rather than replanting. The cultivars that are probably entirely or largely derived from Rocky Mountain columbine include 'alba', 'albiflora', and 'snow queen'. Cultivars that are thought to be significatly of A. coerulea ancestry include 'crimson star' and 'rose queen'.[5] While the 'origami mix' hybirds, originally developed by Goldsmith Seeds,[57] are listed by some sources as being derived from A. coerulea others list it as being from Aquilegia vulgaris.[58][59]

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