304 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



Figure 599.— Danthonia sericea. Panicle, X 1; floret, 

 X 5. (Kearney 1219, Va.) 



wide, those of the innovations mostly involute, those of the culm 

 mostly flat; panicle 5 to 10 cm long, relatively many-flowered, the 

 branches bearing 2 to 6 spikelets, rather open or contracted after 



an thesis; glumes 12 to 17 mm 

 long; lemmas densely long-pilose 

 especially along the margin, about 

 10 mm long, including the slender 

 aristate teeth, the teeth about 

 half the entire length ;palea con- 

 cave, narrowed toward the 2- 

 toothed apex. % — Sand bar- 

 rens, chiefly Coastal Plain, 

 Massachusetts (Sherborn); New 

 Jersey to northern Florida, Tenn- 

 essee, and Louisiana (fig. 600). 

 A rare form with glabrous foliage 

 has been called D. epilis Scribn. 

 (D. glabra Nash, not Phil.) 

 Virginia to Georgia. 



4. Danthonia intermedia 

 Vasey. Timber oatgrass. (Fig. 601.) Culms 10 to 50 cm tall; 

 sheaths glabrous (the lower rarely pilose) with long hairs in the 

 throat; blades subin volute, or those of the 

 culm flat, glabrous or sparsely pilose; panicle 

 purplish, narrow, few-flowered, 2 to 5 cm 

 long, the branches appressed, bearing a single 

 spikelet; glumes about 15 mm long; lemmas 

 7 to 8 mm long, appressed-pilose along the 

 margin below and on the callus, the summit 

 scaberulous, the teeth acuminate, aristate- 

 tipped; terminal segment of awn 5 to 8 

 mm long; palea narrowed above, notched at the apex. % 

 —Meadows and bogs, northern and alpine regions. Newfound- 

 land and Quebec to Alaska, south to northern 

 Michigan, New Mexico, and California (fig. 602). 

 5. Danthonia parryi Scribn. Parry oatgrass. 

 (Fig. 603.) Culms rather stout, in tough clumps, 

 30 to 60 cm tall, somewhat enlarged at base 

 from the numerous over- 

 lapping firm persistent 

 sheaths; sheaths glabrous, 

 somewhat pilose at the 

 throat, a glabrous or pubes- 

 cent fine or ridge on the 

 collar, the lower blades fall- 

 ing from the sheaths; 

 blades erect-flexuous, most- 

 ly 15 to 25 cm long, narrow or filiform, flat or 

 involute, glabrous; panicle 3 to 7 cm long, usually 

 with 3 to 8 spikelets, the branches more or less 

 pubescent, ascending or appressed, the lower- 

 most 1 to 2 cm long, with 1 or 2 spikelets; 

 glumes 20 to 22 mm long, rarely less; lemmas about 1 cm long, rather 

 densely to sparsely pilose over the back, strongly pilose on the callus 

 at the sides, the rachilla glabrous, the teeth more or less aristate; 



Figure 600— Distribution of 

 Danthonia sericea. 



Figure 602.— Distribution of 

 Danthonia intermedia. 



Figure 601.— Danthonia in- 

 termedia. Panicle, (X 1; 

 floret, X 5. (Hitchcock 

 11288, Mont.) 



