200 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Montana: Spanish Basin, 1896, Flodman, j2-j ; Bridger Mts., 

 June 14-18, 1897, Rydberg & Besscy, 4J12, 4JIJ and 43 14. 



* Mitella Breweri Gray, Proc. Am. Acad. 6: 533 [Bot. Cal. i: 



200]. 



Petals pinnately parted as in 31. pentandra, but stamens opposite 

 the sepals, and leaves round-reniform, crenate. 

 Woods. 

 Montana: Upper Marias Pass, 1883, Canhy, iiS. 



* Mitella nuda L. Sp. PI. 408 [111. Fl. 2: 181]. 



A small plant with almost scape-like stem, reniform twice-ci-enate 

 basal leaves, five stamens, and petals that divide pinnatel}' into tiliform 

 segments. Not before reported from the northwestern United States. 



Montana: St. Ignatius Mission, 1883, Canby, iiy. 



Tiarella unifoliata Hook. Fl. Bor. Am. i : 238 [Torr. & Gray, Fl. 



N. Am. I : 587 ; Man. R. M. 93 ; Bot. Cal. i : 199]. 



Rare, growing only in the western part of ^Montana. 



Montana: Columbia Falls, 1892, R. S. Williams, Sjg: Mis- 

 soula, 1880, Watson. 



PARXASSIACEAE. 



Parnassia fimbriata Banks ; Kon. & Sims, Ann. Bot. i : 391 



[Torr. & Gray, Fl. N. Am. i : 150; Man. R. M. 95 ; Bot. Cal. 



I : 202]. 



Common in wet ground, at an altitude of 2000-2500 m. 



Montana: Park Co., 1887, F. Tzt'cedy ; Little Belt Mts., 1896, 

 Flodman, jji : Indian Creek, Jul}- 21, 1897, Fydbcrg & Besscy, 

 4310; Tiger Butte, 1886, R. S. Williams, igi : Deer Lodge, Miss 

 Emma Ware: Gallatin Co., 1886, Tzvccdy, 11 jg: Flathead River, 

 1883, Canby, 122. 



Yellowstone Park : 1885, G. W. Lcttcrman ; East DeLacy's 

 Creek, Aug. 10, 1897, Rydberg & Besscy, 4311 : 1893, Addison 

 Brozon; 1884, Tzueedy, 23^, in part. 



Idaho: Henry's Lake, July 31, iSg'j, Rydberg ct Besscy, 430^. 



Parnassia palustris L. Sp. PI. 273 [Torr. & Gray, Fl. X. Am. i : 

 148 ; Man. R. M. 95 : Bot. Cal. i : 202 : 111. Fl. 2 : 183]. 

 Rare in swamps, at an altitude of over 2500 m. 

 Montana: West Boulder, 1887, Tzvccdy, 260: Hounds Creek, 



1883, Scribncr, 33; Blackfoot River, 1883, Canby, 121. 



