366 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



teeth on the lower side, the crenulate lobes of the lip protruding 

 and reaching near to the apex of the galea. 



Intermediate between P. scopiilorum and P. Stideiica, but often 

 taller and more leafy than either. From the former it differs 

 in the less open corolla, the evident teeth on the lower side of the 

 truncate tip, and in the form of the leaves. In P. sco^ulorwm the 

 rachis is rather broad and the divisions of the leaves short and cren- 

 ulate, while in this the rachis is very narrow, and the divisions long 

 and deeply incised-serrate ; in this respect it resembles more P. 

 Sudetica, from which it differs in the much more hair}^ calyx and 

 the less open corolla. 



Montana: Cedar Mountain, July 16, 1897, Rydberg & Bessey, 

 4983 (type) ; Park Co., 1887, F. Tweedy; Mt. Blackmore, 1886, 

 1 164; Gallatin Co., Afrs. M. L. Alderson; Polk Co., 1887, Tweedy. 



Yellowstone Park: Mt. Holmes, 1884, Tweedy, ^g ; Mt. 

 Washburn, 1885, 888. 



Wyoming: Sheep Mountain, 1897, Tzveedy, 2^2. 



Rhinanthus Crista-galli L. Sp. PI. 603 [111. Fl. 3: 187; Syn. Fl. 

 2' : 310 ; Man. R. M. 288] ; RhinantJms mino7' Ehrh. Beitr. 6 : 44. 

 In woods, at an altitude not exceeding 1500 m. 

 Montana: Columbia Falls, 1892, R. S. Williams, 8g^. 



* Melampyrum lineare Lam. Enc. 4: 22 [111. Fl. 3: 188]; Me- 

 lampvnim Americanum Michx. Fl. Bor. Am. 2 : 16 [Syn. Fl. 2^ : 



310]- 



A small plant with linear or lanceolate opposite leaves, turning 

 black in drying, and small axillary pale-yellow flowers. In thickets, 

 at an altitude of less than 1500 m. 



Montana: Columbia Falls, Mrs. J. J. Kennedy, 40; Jocko 

 River, 1883, Canby, 26p. 



OROBANCHACEAE. 



Orobanche Ludoviciana Nutt. Gen. 2 : 58 [111. Fl. 3 : 196] ; Aphyllon 



Ludovicianum Gray, Bot. Cal. i: 585 [Syn. Fl. 2': 313; Bot. 



Cal. i: 585; Man. R. M. 289]. 



Parasitic mostly on Artcniisias, Ambrosias and other composites. 

 In sandy soil, reaching an altitude of 2000 m. 



Montana: Indian Creek, July 22, 1897, Rydberg & Bessey, 

 4g88 ; south of Snowy Mountains, 1882, Canby. 



Yellowstone Park : Pelican Creek, 1885, Tzueedy, 42^. 



