4l6 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



*Gnaphalium lagopodioides. 



Stems several, from an apparently biennial root, about i dm. high, 

 densely woolly, simple up to the inflorescence ; leaves oblong-spatu- 

 late, 1-2 cm. long, densely covered with white rather loose wool; 

 heads in small conglomerate cymes, about 5 mm. high and 4 mm. in 

 diameter ; involucre woolly at the base, glabrous, shining, more or 

 less yellowish above ; bracts oblong, acutish, somewhat erose at the 

 end; achenes oblong, obtusely angled, smooth; pappus straw- 

 colored, its bristles falling off separately. 



Nearest related to the preceding species, and perhaps only a form 

 of it, but differs in the lower habit, the branching at the base into 

 several stems, the stronger apparently biennial root, the shorter 

 leaves, and the looser pubescence. It grows in the loose geyser 

 formations of the Yellowstone Park. 



Yellowstone Park: Lower Geyser Basin, Aug. 4, 1897, Ryd- 

 herg & Bcsscy, ^134. 

 *Adenocaulon bicolor Hook. Bot. Misc. i : 19 [Syn. Fl. i^ : 237]. 



A plant 4-5 dm. high, with triangular-cordate sinuately dentate 

 leaves, white-floccose beneath and with winged petioles, and glandular- 

 pubescent panicle of small discoid heads with ovate bracts in one 

 series. Grows in damp woods west of the mountains. 



Montana : Columbia Falls, Mrs. Kennedy, 2g. 

 Rudbeckia hirta L. Sp. PI. 907 [111. Fl. 3: 416; Syn. Fl. i- : 260; 



Man. R. M. 183]. 



Probably found in the eastern part of the State, as it is common in 

 neighboring W3^oming and South Dakota, but I have seen no speci- 

 men. 

 Rudbeckia laciniata L. Sp. PI. 2: 906 [111. Fl. 3: 906: Syn. Fl. 



I-: 262; Man. R. M. 183]. 



On rich moist ground, at an altitude of 1000-2000 m. 



Montana: Bozeman, 1884, Tweedy, i^i; Helena, 1892, R. D. 

 Kelsev ; Bozeman Caiion, 1892, IV. T. S/iazv ; Lewis and Clarke 

 Co., 3frs. Miith. 

 Rudbeckia occidentalis Nutt. Trans. Am. Phil. Soc. (II.) 7: 355 



[Syn. Fl. I-: 263; Bot. Cal. i: 347; Man. R. M. 183]. 



Along streams, at an altitude of 1000-2500 m. 



Montana: Gallatin River, 1886, Tzveedy, 1108 ; Bozeman, 1892, 

 K. D. Kelsey ; Bozeman Caiion, 1892, W. T. Shaw. 



Yellowstone Park : 1884, Tzveedy, 132. 



Idaho: Henry's Lake, July 31, 1896, Rydherg ii- Bessey, 5113- 



