TABLE 1 



Chromosome numbers of Cirsium longlstylum and related species 



* Counts for more than one individual were obtained. 

 ** Mitotic count, seed collected by L. Schassberger (/3) 



LITERATURE CITED 



1. Dorn, R.D. 1984. Vascular Plants of Montana. Mountain West Publishing, 



Cheyenne, Wyoming. 276 pp. 



2. Hitchcock, C.L., Cronquist, A. and M. Ownbey. 1969. Vascular Plants of 



Pacific Northwest, Part 1. University of Washington Press, Seattle. 

 914 pp. 



3. Moore, R.J. and C. Frankton. 1963a. Cytotaxonomic notes on some Cirsium 



species of the western United States. Can. J. Botany 41:1553-1567. 



4. Moore, R.J. and C. Frankton. 1963b. A clarification of Ciraium foliosum 



and Cirsium drummondii. Can. J. Botany 42:451-461. 



5. Moore, R.J. and C. Frankton. 1965. Cytotaxonomy of Cirsium hookerianum and 



related species. Can. J. Botany 43:597-613. 



f 



