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OHIO BIOLOGICAL SURVEY 
4. Elymus striatus \\411d. Slender Wild-rye. A more or less 
pubescent grass with simple, slender, erect stems, 2-3 ft. high, and 
slender, dense, sometimes nodding spikes. Spikelets 1-3-flowered, 
diverg'ent from the rachis; lemma hirsute, bearing a slender, rough 
awn. Sometimes infested with ergot. 
In woods and on banks. June, July. Wayne, Erie, Auglaize. 
27. Hystrix Moench. Bottle-brush-grass. 
Usually tall perennials with simple stems, flat leaves, and loosely 
flowered terminal spikes. Spikelets 2-several-flowered, in pairs, rarely 
in 3’s at each node of the rachis; empty glumes vestigial; lemmas 
narrow, rigid, rounded on the back, 5-nerved, awned; palet 2-keeled; 
grain adherent to the palet when dry. 
1. Hystrix hystrix (L.) Millsp. Bottle-brush-grass A grass 
with simple erect stems, 2-4 ft. high, and short exserted or partially 
included lax spikes. Spikelets usually distant, at length widely di¬ 
vergent ; lemma more or less pubescent, acuminate into an awn 
about 1 in. in length. 
In rocky woods. June, July. General. 
28. Hordeum (Tourn.) L. Barley. 
Tufted annual or perennial grasses with terminal spikes, which 
disarticulate at maturity. Spikelets with one perfect flower, rarely 
2-flowered, usually in 3’s at each joint of the rachis, the middle one 
sessile and perfect, the lateral ones pediceled and usually reduced ; 
empty glumes equal, rigid, narrow or setaceous; lemma obscurely 
5-nerved, awned; palet slightly shorter, the two keels near the 
margin; grain usually adherent to the palet at maturity. 
1. With 3 fertile spikelets at each joint of the rachis; lemma with an awn 4-6 
in. long. H. vulgare. 
1. With 1 fertile and 2 lateral, more or less vestigial spikelets at each joint of 
the rachis. 2 
2. Spike flat; awn of the lemma enclosing the fertile flower 4-6 in. long. 
H. distichum. 
2. Spike not decidedly flattened, awn 3 in. or much less in length. 3 
3. Awns 1/2 in. or less in length. H. nodosum. 
3. Awns 1-3 in. long, the whole spike appearing like a brush. H. jubatum. 
1. Hordeum vulgare L. Common Barley. An annual grass 
with simple erect hollow stems, 1-3 ft. high, and dense terminal 
spikes. Spikelets 3 at a joint of the rachis each with a perfect flower; 
lemma usually with a coarse long awn which breaks readily. Cul¬ 
tivated for its grain. 
In fields and waste places, especially along railways. June, 
July. Franklin, Tuscarawas, Portage. Escaped from cultivation. 
