508 POACE^. 



Wyoming, Utah, Oregon, California. 



ir. M. bulbosa Geyer, Hook. Jour. Bot. 8:19 (1856). A. Gray ^ 

 Proc. Am. Acad. 8:409 (1873). 



Culms slender, growing singly or in dense tufts, with corms at 

 the base. Sheaths scabrous, or sometimes pubescent, about the 

 length of the internodes; ligule white, thin, about -4 mm. long; 

 blades 3-4 in number, erect, scabrous. 10-15 cm. long. Panicle 

 erect, spikelike, more or less interrupted below, 7-12 cm. long; 

 rays in twos, threes, or single, stout, erect, appressed. Spikelets 

 o-8-flowered, joint of rachilla 2.2-5 mm. long; empty glumes 

 scabrid, first glume elliptical-lanceolate, 3-5-nerved, 6-7 mm. 

 long, second elliptical, obtuse-retrorse, 5-nerved, 8 mm. long ; 

 floral glume 9 mm. long, scabrous, oblong-lanceolate, obtuse oi 

 notched at the tip, 7-nerved, with some shorter nerves interven- 

 ing; palea elliptical without spreading, 7 mm. long. 



Montana, Williams; Washington, Brandegee 1182; Oregon, 

 Howell, Cusich^OO, HaU G?,! ; Xevada, TF«/so« 1304. 



Montana, Washington, Xevada, California, Utah. Wyoming. 



18. M. subulata (Griseb.) Scribn. Proc. Phila. Acad. 47 

 (1885). Broinus suhuhtus Griseb. Ledeb. Fl. Ross. 4: 358 (1853), 

 M. acuminata Boland. Proc. Cal. Acad. 4:104 (1870). 



A slender grass, 60-120 cm. high, the culms scabrous with 

 corms at the base. Sheaths shorter than the internodes; ligule a 

 white ciliate fringe 1 mm. long; blades 4-5 in number, scabrous, 

 flat, 12-18 cm. long, 4-6 cm. wide. Panicle slender, few- 

 flowered, 12-15 cm. long; rays slender, plumose, the lower in 

 threes or fours, the longest 5-7 cm. long, bearing 2-5 spikelets 

 above the middle. Spikelets about 5-flowered, rachilla zigzag, each 

 joint 3-4 mm. long, with an unequal callus-like swelling just below 

 the empty glumes; lower glume ovate-lanceolate, 3-nerved, first 5 

 mm. long, second 6 mm. long; floral glume 9-12 mm. long, hirsute 

 or scabrous, oval-acuminate, 7-nerved ; palea linear, 5-6 mm. long. 



Oregon, Kellogg cf- Ilavard 1112, Howell 445. 



Montana, Idaho, Washington, Oregon, California. 



19. M. bromoides A. Gray, Proc. Am. Acad. 8:409 (1873). 

 M. Geyeri Munro, ]^,oland. Proc. Calif. Acad. 4:103 (ls70). 



