172 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Grows at an altitude of about 2500 m. 



Montana: Grasshopper Valley, 18S0, Watson. 



Yellowstone Park: 1888, Dr. Chas.H. Hall: Pelican Creek, 

 1885, Tivecdy^ 573 ^ 1883, Miss Alary Compton. 1 

 Thelypodium integrifoliura (Nutt.) Endl. ; Walp. Rep. i : 172 [Syn. 



Fl. i': 176: Man. R. M. 21; 111. Fl. 2: no; Bot. Cal. i : 37] ; 



Pachypodiiim ijitegrifoliuui Nutt. ; Torr. & Gray, Fl. N. A. i : 96. 



On dry hills and plains, up to an altitude of 2000 m. 



Montana: Fridley, 1887, Tzvecdy, 24; Helena, 1887, 7?. S. 

 Williams, 6jy : Lewis & Clarke Co., Mrs. Miith (narrow leaved 

 form); Madison River, 1882, Canby : Hell Gate, 1880, Wafson. 



Yellowstone Park : Mammoth Hot Springs, 1884, Tzaeedy, 



20"/. 



Subularia aquatica L. Sp. PI. 642 [111. Fl. 2: no; Man. R. M. 



25 ; Syn. Fl. i' : 130 : Bot. Cal. i : 43], 



In shallow pools, up to an altitude of 3000 m. 



Yellowstone Park: Lake, 1873, Parry, 27; 1885, Tzcecdy, 

 576. 



Stanlya viridiflora Nutt. : Torr. & Gray, Fl. X. A. i : 98 [Syn. 



Fl. 178; Man. R. M. 22; Bot. Cal. i': 38]. 



Rare in the region. 



Montana: Red Rock Creek, 1888, Tzi'ccdy, ji : Shinberger's 

 Canon, 1880, Watson. 



*Lepidium integrifolium Nutt. : Torr. & Gray, Fl. N. A. i : 116 



[Syn. Fl. i': 125]. 



A plant with a thick root, entire oblong or spatulate thick leaves, 

 25-50 mm. long, white broadly clawed petals, 2 stamens, and ob- 

 ovate-oblong pod with a distinct style. 



Montana: Muddy River, on Upper Missouri, Gcycr, according 

 to Hooker. 



Lepidium sativum L. Sp. PI. 644 [Syn. Fl. i' : 126; Man. R. M. 



26; 111. Fl. 2: 112]. 



Introduced around dwellings. 



Montana: Helena, 1888, F. D. Kclscy. 

 * Lepidium ramosum A. Nelson, Bull. Torr. Bot. Club, 26: 125. 



Resembles L. apctaluni, but is lower and more bushy and with 

 evident petals. Dry hills. 



Montana: Lima, 1895, Rydberg, 26jS : Gallatin City, 1883, 

 Scribncr, SB (?). 



