Due to a lapse in federal funding, this USDA website will not be actively updated. Once funding has been reestablished, online operations will continue.
Conservation implications of spur length variation in long-spur columbines (Aquilegia longissima)Author(s): Christopher J. Stubben; Brook G. Milligan
Source: In: Barlow-Irick, P.; Anderson, J.; McDonald, C., tech eds. Southwestern rare and endangered plants: Proceedings of the Fourth Conference; March 22-26, 2004; Las Cruces, New Mexico. Proceedings. RMRS-P-48CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 108-114
Publication Series: Proceedings (P)
Station: Rocky Mountain Research Station
PDF: View PDF (135 B)
DescriptionPopulations of long-spur columbine (Aquilegia longissima) with spurs 10-16 cm long are known only from a few populations in Texas, a historical collection near Baboquivari Peak, Arizona, and scattered populations in Coahuila, Chihuahua, and Nuevo Leon, Mexico. Populations of yellow columbine with spurs 7-10 cm long are also found in Arizona, Texas, and Mexico, and are now classified as A. longissima in the recent Flora of North America. In a multivariate analysis of floral characters from 11 yellow columbine populations representing a continuous range of spur lengths, populations with spurs 10-16 cm long are clearly separate from other populations based on increasing spur length and decreasing petal and sepal width. The longer-spurred columbines generally flower after monsoon rains in late summer or fall, and occur in intermittently wet canyons and steep slopes in pine-oak forests. Also, longer-spurred flowers can be pollinated by large hawkmoths with tongues 9-15 cm long. Populations with spurs 7-10 cm long cluster with the common golden columbine (A. chrysantha), and may be the result of hybridization between A. chrysantha and A. longissima. Uncertainty about the taxonomic status of intermediates has contributed to a lack of conservation efforts for declining populations of the long-spur columbine.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationStubben, Christopher J.; Milligan, Brook G. 2007. Conservation implications of spur length variation in long-spur columbines (Aquilegia longissima). In: Barlow-Irick, P.; Anderson, J.; McDonald, C., tech eds. Southwestern rare and endangered plants: Proceedings of the Fourth Conference; March 22-26, 2004; Las Cruces, New Mexico. Proceedings. RMRS-P-48CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 108-114
Keywordsplant conservation, long-spur columbine, Aquilegia longissima, spur length
- The association of two invasive shrubs, common buckthorn (Rhamnus cathartica) and Tartarian honeysuckle (Lonicera tatarica), with oak communities in the midwestern United States
- Multiresource Inventories - A Technique for Determining the Distribution and Extent of Honeysuckle on Commercial Forest Land in South Carolina
Using forest inventory plot data and satellite imagery from MODIS and Landsat-TM to model spatial distribution patterns of honeysuckle and privet
XML: View XML