2 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



SAXIFRAGACE^:. 



Heuchera alpina, n. comb., H. cylindrica alpina, Wats. Horse- 

 fly Pass, Crazy Mts., 8200 ft., July 20, 1902; Monida, June 26, 1902. 



Heuchera saxicola, E. Nelson, Bot. Gaz. 30:118. Separates 

 tmr Montana form commonly referred to H. ovalifolia, Nutt. as the 

 above species, which is characterized as "villous and viscid glandu- 

 lar" and ovalifolia proper as "wholly destitute of villous hairs." Tor- 

 rey & Gray (Fl. N. Am. i 1581) seems to have used the latter term 

 to distinguish this species ffom H. cylindrica, Dougl., previously 

 described and it is not at all evident that he did not mean our species. 



Leptarrhena amplexifolia, R. Br. Mountain sides, Holzinger 

 Basin, Sperry Glacier, Aug. 22, 1901, L. M. Umbach, 356. 



Mitella stauropetala, Piper, Erythea, 7:161. Differs from M, 

 trifida, Graham in being larger throughout, raceme secuncl, petals 

 twice the length of the sepals and divided half down into three 

 filiform divergent lobes; trifida having relatively few flowers, petals 

 scarcely exserted and very shortly lobed. Close to M. I'iolacca, Rydb.. 

 of which it may be the normal form, but differs from it in its larger 

 size, more numerous flowers and petals trifid into long, filiform, di- 

 varicate segments. In leaf and pubescence they seem identical and 

 in fruit can only be distinguished by size. Petals often a beautiful 

 violet. Evaro, June 8, 1902, low wet places ; Mt. Hyalite, 8000 ft., 

 Aug. i, 1902. 



Parnassia Kotzebuei, C. & S. In bogs at the outlet of the 

 Lower Basin of the Gallatin River, July 7, 1898. 3-15 cm. high, 

 staminodia 5 and fairly typical of the species. Not heretofore 

 found south of the British boundary. 



Ribcs aurcum chrysococcum, Rydberg, Flora, 204. There is no 

 basis for separating the yellow-fruited forms of R. aurcum from the 

 black-fruited ones, as variation in fruit-coloration is not infrequent. 

 There are red and white fruited forms of Actaca arguta, Nutt., rod 

 and yellow fruited forms of Shcphcrdia argcntea, Nutt. and S. Caiia- 

 dcnsis, Nutt,, as well as red and black fruited Primus dcmissa, Walt). 

 In regard to the yellow, red and black fruit of Ribes aurcum see Bot. 

 Gaz. 14:289 and 15:24. Yellow appears to be the normal color of 

 the fruit here. 



