348 POACH, K. 



upon tlio inouiitaiiis. Tlie color of tlio imiiicio is very vuriiil)lo, run- 

 niug from grounisli straw-color, throufjfh various degrees of purple 

 to deep purple all over." Dr. Thurber in liot. Calif., Vol. 2, p. 



OU>» 



Montana. Conhy 'MVl; Washington, SaiiiHifrij ^'Ih, 10'^5. 

 ■ New Kngland to the IJociky Mountains. Oregon. California. 



Var. longifolia Vasey, Contrih. U. S. Nat. Herb. 3: s;{ (ISli-^). 



Blades of sterile shoots as long as the eulni. involute-setaceous; 

 empty glumes 8 mm. long, acuminate; hairs more prominent, the 

 awn projecting 10 mm. above the floral glume. 



Calfornia, Jiohtuhr 0470. 



18. C. cinnoides (Muhl.) Scribn. Mem. Torr. Bot. Club, 5:41 

 (1894). Ai'Hudn cinnoi(le)<M\\\\\A\\'\.m\. 18r(18i:). A. roorrfafa 

 Torr. Fl. U.S. 1:04 (lS-24). ('aJdiiuifirosfis ritinoit/cs Spreng. 

 Syst. 1:25;» (1824). (f. XutfalUaiia Stcud. X<mi. Ed. ;.'. 1 : ;.'r>l 

 (1841). PI. (J ram. 100 (1855). C. Ca nmlensis ^wii. (Wn. \-Af> 

 (1818). not Beau v. 



Perennial; culms stout, smooth or scabrous below, 90-150 cm, 

 high. Ligide 3-3 mm. long; blades Hat, scabrous. 2-4 cm. long, 

 4-'7 mm. wide, apex not attenuate. Panicle exserted, G-10 cm. 

 long, 1-2 cm. broad, and then very dense or slightly interrupted 

 below, or larger, 10-20 cm. long, 2-3 cm. broad, and then inter- 

 rui)ted, bearing spikelike interrupted branches, 3-0 cm. long. 

 Spikelets lanceolate, scabrous, 0-7 mm. long; empty glumes 

 si)reading, nearly e<iual, lanceolate, with awl-shaped tij)s, first com- 

 pressed-keeled, 1-nerved, second compressed-keeled above, 3-nerved; 

 floral glume 4-5 mm. long, scabrous, keeled, acute, with a few hairs 

 luilf its length on the back, on the margins numerous, longer and 

 rather stout ; awn straight, stout, starting one-fourth the way from 

 tlie tip of its glume, which it slightly exceeds; rudiment 1-1.5 mm. 

 long, bearing copious stiff hairs at the apex. 



Khode Island, Tweedy; Massachusetts, Sturtevant; Delaware, 

 Canhy; District of Columbia, .l/rTV?/'///?/. 



Moist land, New England to Pennsylvania, North Carolina and 

 southward. Flowering in August. 



19. C. Tweedyi Scribn. Vasey, Contrib. U. S. Nat. Herb. 3:83 



