MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 42 1 



Madia glomerata Hook. Fl. Bor. Am. 2: 24 [Syn. Fl. i^ : 306; 



Bot. Cal. I : 360; Man. R. M. 191]. 



In sandy soil and waste places, at an altitude of 1500-2000 m. 



Montana: Salesville, 1892, IV. T. Shazu ; Great Falls, 1890, 

 R. S. Williams, ^j ; Bridger Mts., 1896, Flodman, 8jo; Trail 

 Creek Divide, 1897, Rydherg & Bessey, 5180a; Fort Ellis to the 

 Yellowstone, 1871, Hayden Survey ; Plains between Little Belt and 

 Crazy Mts., 1882, Canby ; Grasshopper Valley, 1880, Watson. 



Yellowstone Park : Mammoth Hot Springs, 1884, Tzvecdy, 

 i^y ; Pelican Creek, 1885, y^S. 



Coreopsis tinctoria Nutt. Journ. Acad. Phila. 2 : 114 [111. Fl. 3: 

 432; Syn. Fl. i': 291; Man. R. M. 189]. 

 Wet meadows, up to an altitude of 1500 m. 

 Montana : John Pearsall, Soy. 



Bidens cernua L. Sp. PI. 832 [111. Fl. 3: 437; Syn. Fl. i^: 296; 



Bot. Cal. I : 357 ; Man. R. M. 189]. 



River-banks and sandbars, up to an altitude of 2000 m. 



Montana: Madison Co., 1886, Tzveedy, iioy, Judith River, 

 1886, R. S. Williams, 43g; Emigrant Gulch, Aug. 23, 1897, Ryd- 

 berg & Bessey, ^lyga: Dog Creek, 1883, Scribner, 108. 



* Thelesperma marginatum. 



Perennial, about 2 dm. high, leafy below, naked or with a few 

 bract-like leaves above, glabrous and somewhat glaucous ; leaves 

 pinnately divided, with i or 2 pairs of linear lobes, which are scarcely 

 wider than the rachis ; peduncle about i dm. long with i head, 

 seldom 2, involucre broadly campanulate, connate to the middle, its 

 lobes ovate with a very broad white scarious margin, the outer bracts 

 lanceolate, about one-third as long as the inner; lobes of the corolla 

 ovate-lanceolate, much shorter than the cylindric tube ; ray-flowers 

 none. 



Resembles T. auibigunm in habit, but the heads are much more 

 like those of T. gracile. It differs, however, from both in the 

 broad-margined bracts and the longer tube of the disk-corollas. 



Montana: Great Falls, 1891, R. S. Williams, 80; Lewis and 

 Clarke Co., Mrs. Muth ; Helena, 1892, Mrs. Math; Sweet Grass 

 Creek, 1889, Tzveedy. 



Assiniboia: Medicine Hat, iS(^/^, John Macotm, 30^3 (type). 



