420 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Helianthus Nuttallii Torr. & Gray, FL N. Am. 2 : 324 [Syn. Fl. i^ : 



277; Bot. Cal. i: 354; Man. R. M. 186]. 



In valleys, at an altitude of 1500-2500 m. 



Montana: Beaver Head Co., 1888, Tweedy, 218 ; Madison Co., 

 1886, Tzveedy, 1121; Judith River, 1886, R. S. Williams, ^26 ; 

 Helena, 1892, F. D. Kelsey. 



Yellowstone Park : ]\Iammoth Hot Springs, 1884, Tzveedy, 

 iji ; Fire Hole River, 1892, Miss Isabel Mulfo7-d. 



* Helianthus strumosus L. Sp. PI. 905 [111. Fl. 3: 427; Syn. Fl. 



I-: 279]. 



Somewhat related to H. Uiherosus, but without tubers, and the 

 leaves more narrowly lanceolate. It grows in valleys, up to an 

 altitude of 1500 m. 



Montana: Sheep Creek, 1896, Flodiuan, 8yj. 



Helianthella quinquenervis (Hook.) Gray, Proc. Am. Acad. 19: 10 

 [Svn. Fl. I-': 284; Man. R. M. 188] ; Helianthus quinquenervis 

 Hook. Lond. Joiirn. Bot. 6: 247. 

 On hillsides, at an altitude of 2000-2500 m. 

 Montana: Jack Creek, 1886, Tzveedy, iijg; Little Belt Pass,. 



1896, Flodnian, 8y2; Judith Mountains, 1882, Canby. 

 Yellowstone Park: Soda Butte, 1885, Tzveedy, yji. 



Helianthella uniflora (Nutt.) Torr. & Gray, Fl. N. Am. 2 : 334 [Syn. 



Fl. i': 285 ; Man. R. M. 188] ; //elianl/ms unicorns ^uit. Journ. 



Acad. Sci. Phila. 7: 37. 



On hillsides, at an altitude of 1500-2500 m. 



Montana: Gallatin Co., 1886, Tzveedy, iijy; Lewis and Clarke 

 Co., 1892, F. D. Kelsey; Little Belt Mountains, 1896, Flodnian, 

 Syi ; Spanish Basin, June 28, Rydberg & Bessey, §iy8 ; Bridger, 

 June 14, 1897, 5/79; 1883, Scribner, io6a. 



Yellowstone Park: 1884, Tzveedy, lyo, in part. 



* Helianthella Douglasii Torr. & Gray, Fl. N. Am. 2: 334 [Syn. 



Fl. i^: 285]. 



Like the preceding, but hirsute and with longer and more spread- 

 ing bracts, and more acuminate leaves. 



Montana: Park Co., 1887, Tzveedy, 2Qg; Jack Creek, July 19, 



1897, Rydberg & Bessev, 3^77- 



Yellowstone Park: 1884, Tzveedy, lyo, in part: 1885, 6y6. 



