noe 
14, Calamagrostis Adens. Reedgrass. 
Perennials with snall spikelets and narrow, open or contracted panicles. 
Spikelets 1-flowered, the rachilla disarticulating above the slumes, prolonged 
behind the palea as a hairy bristle; glumes equal, acute or acuminate; lemmas 
shorter than the glumes, the callus hairy, avmed fran the back below the 
middle, the awn straight and included, or twisted below, geniculate, amd 
protruding sideways from the glumes. 
© Awns twisted below, protruding sideways from the glumes 
& Collars of the sheaths glabrous; awns 4=5 mn. long 
G above the bend l. C. purpurascens 
(g above the bend 
2, Collars of the sheaths pubescent; awns 1-2 mm. long 
ge C. rubescens 
o Awns straight, included 
& Collars pubescent; callus hairs S as long as the 
@ lemma Oe Ce Scribneri 
& Collars glabrous; callus hairs copious, as long ; 
as the lemna 4. %. canadensis i 
§ 
1..C. purpurascens R. br. Culms tufted, sometimes producing short 
rhizomes, erect, 20-60 cu. tall; sheaths smooth or scaberulous; ligules 
prominent, 2-4 mm. long; blades stiff, firm, flat or loosely folded, 
scaberulous, strongly nerved, 5-15 om. long, @-4 mm. wide, those of the 
innovations elongate; panicles dense, 5-10 cm. long, usually purple-tinged; 
glumes equal, scabrous, 5-7 mi. long, the first 13 the second 3-nerved; 
lemmas 4-5 mm. lons, 4-nerved, scabrous, awned fron near the base, twisted 
below, geniculate, 4-5 mm. long above the bend, protruding sideways fron 
she glumes; produced rachilla 1.5-2 mm. long. 
CS ee 
Rocky soil and hillsides at higher altitudes. 
———Ssnovty TOp icc egecterecn 287%; ijiessner's Peak, 
Upper Glidden Lake, 4000-5900 Pt « gp Sheso—s045. 
