GRASSES OF OHIO 
289 
Extensively cultivated for its grain and straw. Persisting in 
fields and along roads and railways. June, July. Rather general. 
Escaped from cultivation. 
3. Avena fatua L. Wild Oats. An annual grass with a stout 
simple erect stem, 1-4 ft. high, and an open panicle with ascending 
branches. Spikelets pendulous; empty glumes smooth, lemma 
pubescent with long rigid brown hairs and a ring of hairs at the 
base, its long stiff awn inserted about the middle and bent and 
twisted. A weed. 
In fields and waste places. July, xAugust. From Europe. No 
specimens. 
19. Deschampsia Beauv. Hair-grass. | 
Tufted perennial grasses with flat or involute leaves and con¬ 
tracted or open panicles of shining spikelets. Spikelets 2-flowered, 
the hairy rachilla extended beyond the flowers or rarely ending in 
a staminate one; empty glumes keeled, acute, membraneous; lemmas 
thin, 4-nerved, the midnerve becoming an awn, toothed at the apex; 
palet narrow, 2-nerved; grain free enclosed in the flowering glumes, 
1. Deschampsia flexuosa (L.) Trin. Wavy Hair-grass. A 
glabrous grass with an erect slender simple stem, 1-234 ft. high^ 
sheaths much shorter than the internodes, involute setaceous leaves, 
and an open panicle with erect, ascending or widely spreading, flex- 
uous branches naked at the base. Lemma acutely toothed at the 
apex and with a twisted bent awn inserted near its base. 
In dry places. July, xAugust. Portage County. 
20. Aspris xAdans. Hair-grass. 
Small, delicate annuals with narrow leaf-blades and contracted 
or open panicles. Spikelets small, 2-fIowered, both flowers perfect; 
empty glumes thin-membranous, subequal, acute; lemmas hyaline, 
2-toothed, bearing a delicate dorsal awn arising below the middle; 
palet hyaline, 2-nerved ; grain enclosed in the flowering glumes and 
usually adherent to them. 
1. Aspris caryophyllea (L.) Nash. Silvery Hair-grass. A 
delicate glabrous annual grass with erect stems, ^4-1 ft. high, in¬ 
volute setaceous leaves, and an open, silvery, shining panicle. 
Spikelets clustered toward the ends of the capillary branches; lem¬ 
ma with a bent awn, very acute, 2-toothed. 
In fields and waste places. May-July. From Europe. Lake 
County. 
