MEMOIRS OF THE NE^V YORK BOTANICAL GARDEN. 25 



flowering glumes and the longer awn. It grows in open woods at 



an altitude of 2000-2500 m. 



Montana; Neihart, 1888, R. S. Williams, 816; Spanish Basin, 



June 28, 1897, Rydberg cf- Bcsscy, jjjj ; McDonald's Peak, 1883, 



Canby, jjS. 

 Yellowstone Park: Slough Creek, 1885, Tzaeedy, 614. 



Oryzopsis micrantha (Trin. & Rupr. ) Thurb. Proc. Phila. Acad. 

 1863: 78 [Man. R. M. 408; 111. Fl. i : 140] ; Urachne micran- 

 tha Trin. & Rupr. Mem. Acad. St. Petersb. O'l-) 5- '^^• 

 In canons and on wooded hill sides up to an altitude of 2000 m. 



• Montana: Low^er Sand Coulee, 1890,7?. 6*. Williams, 81 j ; In- 

 dian Creek, iSS^, Scribncr, j^j ; Billings, 1898, Williams d' Griy- 



ath. 



Eriocoma cuspidata Xutt. Gen. i : 40 [Bot. Cal. 2 : 283] ; Oryzop- 

 sis cuspidata Benth. ; \"asev. Special Rep. U. S. Dept. Agric. 63: 

 23 [Man. R. M. 408; Ill.Fl. i : 141]. 



In loose, especially sandy, soil up to an altitude of 2000 m. At Man- 

 hattan I found it, as a troublesome weed in an oat field in 1895. 



Montana: Billings, 1898, Williams tf- Griffith: Melrose, 1895, 

 Shear, ^^g; Manhattan, Shear, 4J2: Rydberg; 21^4; Cottonwood 

 Creek, i8g6, Rlodmaii, 4j : Custer Co., 1892, Jlf^s. Light; Great 

 Falls, 1891, R. S. Williams, j6j : Bozeman, 1887, Tzocedy ; Cot- 

 tonwood Creek, 1898, Rydberg, J2j2 ; Lewis and Clarke Co., J/rs. 

 Math', Gallatin Cit}^ 1883, Seribjier, j^^. 



Yellowstone Park: East Fork, 1885, Tz.'eedy, J82 ; Electric 

 Peak. Aug. 20, 1S97, Rydberg d- Bessey, jjj^. 



* Eriocoma caduca (Sciibnerj : Stipa caduca Scribner; Vasey, 



Com. U. S. Nat. Herb. 3: 54. 1892. 



Although somewhat resembling a Stipa in general habit, I think 

 that it should be referred to Eriocoma, for the awn, although long as 

 in Stipa, is earh' deciduous : the spikelet is not constricted at the 

 base so tliat there is no evident callus : it is covered all over with 

 long white hairs : and the empty glumes are of that thin, scarious 

 type characteristic of Eriocoma cuspidata. The spikelet is, of 

 course, more acute at both ends than in the type of Eriocoma, but 

 much less so than in E. Wcbberi. In my opinion, it is much more 

 related to E. cuspidata than is that species, notwithstanding the long 

 awn. 



Montana: Sixteen Mile Creek, 1883, Scribncr, 342. 



