80 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



Oxytropis Bcsseyi, (Rydberg) ; Aragallus Bcsseyi, Rydberg, Flora, 

 250 is A. Blankinshipii, Nelson, Erythea, 7:58. The types of both 

 were collected within a few miles of each other. The fruited speci- 

 mens of Nelson were pathogenic, infected with Uredo, causing the 

 ovary to remain undeveloped and an abnormal calyx, the legume in 

 the species usually exceeding the calyx ; otherwise they are identi- 

 cal. 



Oxytropis Cusickii, Greenman, Erythea, 7:116. (J. M. Greenrnan). 

 Mt. above Stanton Lake, Aug. 7, 1894, R. S. Williams. Hitherto 

 known only from the Wallowa Mts., of East Oregon (Cusick). 



Oxvtropis multiceps, Xutt. Dewey, June 24, 1902 . Big Coulee Cr., 

 Sweet Grass Co., June 15, 1902. 



Oxytropis Parry', Grav. Our specimens have the leaves some- 

 what larger, mainly elliptical and a sparser pubescence, than ir- the 

 type, but otherwise appear identical. 

 Sperry Glacier, 8000 ft., Sept., I, 1903. 



Oxytropis podocarpa, Gray. Just north of Yellow Mln., 'JYton 

 Co., June 21, 1897, R. S. Williams, 1086. Good specimens in both 

 fruit and flower. 



Oxytropis villosa. ^Rydb.) ; Aragallus rillosus, Rydberg, Bull. 

 Torr. Bot. Club, 28; 36. "Craig. 1900, E. V. Wilcox, 378." 



Pctalostcmon mnltiflontm. Xutt.; Rydberg, Flora, 238. Possibly 

 an immature form of P. oUgofhylluin. Rydb. There must be some er- 

 ror in referring P. multiflorum, Xutt. to Montana, as it has not 

 hitherto been found anywhere near our limits and is a more south- 

 ern species. 



Pctalostcinon I'illosinn, Xutt. I question the occurrence of this 

 species in the state, although a specimen in the Gray Herbarium is 

 labelled "Montana, L. F. Ward", but may have come from east of 

 our limits and there are no "sand hills" (Rydberg, Flora, 238) in the 

 state. 



Petalostemon violaceum pubescens, Gray. This with more pu- 

 bescent stem and leaflets is the usual form in the plains region of the 

 state, though the typical glabrous I'iolaccwii occurs sparingly (Hel- 

 ena, E. X". Brandegee). 



Bear Tooth, Aug. 21, 1898. E. X". Brandegee; Great Falls, July 10, 

 1900; Wibaux, Aug. 15, 1903; Fergus Co., F. A. Spragg, 1901. 



