23 



VI. LITERATURE CITED 



Achuff, P.L. 1991. Plant species of special concern in Montana. 

 Montana Natural Heritage Program, Helena, Montana. 20 pp., 



mimeo. 



Clausen, J., D. Keck, and W. Heisey. 1945. Experimental studies 

 on the nature of species. Carnegie Inst. Publ . 564: 77-79. 



Dawe, J.C., and D.F. Murray. 1981, Chromosome numbers of 

 selected Alaskan vascular plants. Canadian Journal of 

 Botany 59:1373-1381. 



DeSanto, J. 1991. Variations in Aquilegia jonesii . Bulletin of 

 the American Rock Garden Society 49(l):60-65. 



Dorn, R. D. 1984. Vascular plants of Montana. Mountain West 

 Publishing. 276 pp. 



Hitchcock, C.L., Cronquist A., Ownbey, M. and J.W. Thompson. 

 1964. Vascular plants of the Pacific Northwest, Part 2: 

 Salicaceae to Saxif ragaceae . University of Washington 

 Press, Seattle. 597 pp. 



Lesica, P., and J.S. Shelly. 1991. Sensitive, Threatened and 

 Endangered Plants of Montana. Montana Natural Heritage 

 Program, Occasional Publication No, 1. Helena, Montana, 

 8 8 pp. 



Marriott, H. 1991. Plant species of special concern in Wyoming. 

 Wyoming Natural Diversity Data Base, Laramie, Wyoming. 7 

 pp. , mimeo. 



Moss, E.H. 1983. Flora of Alberta. 2nd edition revised by J.G. 

 Packer. University of Toronto Press, Canada. 687 pp. 



Munz, P. A. 1946. Aquilegia , the cultivated and wild columbines. 

 Gentes Herbarium 7:1-150, 



Ode, D. 1991. South Dakota Natural Heritage Program Botanist, 



Pierre, South Dakota, Phone conversation (September) on the 

 distribution of Aquilegia brevistvla in South Dakota, 



Phillips, H.W. 1991. Lewis & Clark National Forest Ecologist, 



Great Falls, Montana. Phone conversations of December 4 and 

 5, on fire ecology and distribution of A, brevistyla . 



Scoggan, H.J. 1978. The flora of Canada. Part 3, National 

 Museums of Canada, Ottawa, Canada. pp. 547-1115, 



