84 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



GERANIACE^:. 



*Erodium circutarium, L'Her. Introduced from the Pacific coast 

 and frequent in localities below. 



Thompson Falls, Aug. 8, 1901 ; Plains, June 6, 1902. 



Floerkia proserpinacoides, Willd. ; F. occidentalis, Rydberg, Mora, 

 268. The characters separating occidentalis from prosperinacoides will 

 not ;ir,M as to these specimens. Here a weak, decumbent or trail- 

 ing \:ne, 3-5 dm. long, abundant in wet sLd ly plac<s. 

 Evaro, June 8, 1902. 



Geranium nervosum, Rydb., Bull. Torr. Dot. O .!-. 2S: 34. The 

 fact that this is intermediate in character between G. incisiim, Nutt. 

 and G. Richardsonii, F. & T., is found growing with those species and 

 is :el?r.ively rare would seem to indicate a hybrid between them. 

 Flathead Cr., Gallatin Co., July 16, 1902. 



Irnpatiens aurella, Ryclberg, Bull. Torr. Bot. Club, 28: 34.. At a. 

 spring on the road between big Fork and Swan Lake, Mission Mts., 

 Aug. n, 1894, .Millie M. Smith. Fairly typical, having the salient 

 toothed leaves and the small, narrow, deep yellow flowers and long" 

 recurved spur of that species. 



Irnpatiens biflora, Walt. These appear to have the small flow- 

 evs .;nd often unspotted corola of /. aurella, Rydberg (Bull. Torr. Po*. 

 Citi'b, 28: 34), but the leaves are crenate serrate and in other respects 

 resemble biflora. 



Prickly-Pear Canon, July 23, 1887, R. S. Williams, 688; Wood- 

 lawn, Sept. 10, 1899, E. N. Brandegee; Child's Ranch, July 29, 1898, 

 E. N. Brandegee. 



Irnpatiens ecalcarata, n. sp. 



9-12 dm. high: leaves ovate to ovate-elliptical, about 10 cm. long 

 by 5 wide on petioles of equal length, usually acute at 

 base and apex, distantly serrate-dentate, teeth and apex 

 mucronate, light green above, paler beneath, thin : cymes 

 2-6 flowered in the axils of the upper leaves ; bracts linear- 

 lanceolate, 3 mm. long: flowers 12-15 mm. long and nearly as wide, 

 orange or pale-yellow, unspotted, the saccate sepal shallow and 

 rounded at base, spurless, about 13 mm. long and 10 deep, lateral 

 sepals oblique-elliptical, hooked cuspidate at apex, 6 mm. long: petals 



