284 
OHIO BIOLOGICAL SURVEY 
1. Sphenopholis obtusata (Mx.) Scrib. Blunt-glumed Eaton- 
grass. An erect rather stout grass, 1-2^2 ft. high with a dense gen¬ 
erally spike-like, strict panicle with erect branches. Spikelets 2-3- 
flowered; lemma narrow, obtuse; empty glumes unequal, often 
purplish, the first narrow, shorter than the inner which is sub- 
cucullate and about six times as wide. 
In dry soil. June-August. No specimens. 
2. Sphenopholis pallens (Spreng.) Scrib. Tall Eaton-grass. An 
erect, usually slender grass with simple stems, 1-3 ft. high, and 
lax, nodding panicles. Spikelets oblong-lanceolate, usually numerous 
and somewhat crowded and appressed to the branches; lemma 
lanceolate, acute, rarely awned; empty glumes unequal, the outer 
narrow and about % as broad as the obtuse or abruptly acute inner 
one, which is smooth or somewhat rough on the keel. 
In woods or moist soil. June, July. General. 
3. Sphenopholis mtida (Spreng.) Scrib. Slender Eaton-grass. 
A grass with very slender erect stems, 1-2 ft. high, with pubescent 
sheaths and leaves, and with a loosely flowered panicle, the branches 
spreading at flowering time and later becoming erect. Spikelets 
cuneiform, not crowded; empty glumes smooth, the outer about 
one-third as wide as the inner; lemma narrow, smooth, obtuse, rarely 
short-awned. 
In dry woods. May, June. Cuyahoga, Knox, Licking, Fairfield, 
Hocking, Lawrence, Adams. 
9. Koeleria Pers. Koeler-grass. 
Tufted perennials with narrow leaves and mostly densely 
flowered terminal spike-like panicles. Spikelets 2-4-flowered; rachilla 
prolonged into a naked pedicel behind the upper palet; empty glumes 
narrow, acute, unequal, keeled, with scarious margins; lemma faintly 
3-5-nerved; palet 2-keeled; grain free, loosely inclosed within the 
subrigid lemma. 
1. Koeleria cristata (L.) Pers. Crested Koeler-grass. A per¬ 
ennial grass with simple rigid erect stems, l-2j^ ft. high, with 
retrorsely pubescent sheaths, and with pale green, spike-like, cylin¬ 
drical panicles. Spikelet 2-5-flowered; lemma scabrous^ shining. 
A valuable pasture grass in the west. In dry sandy soil, es¬ 
pecially on prairies. July-September. Ottawa County. 
10. Korycarpus Zea. Korycarpus. 
Erect, nearly smooth parennials with narrow paniculate or 
racemose inflorescence. Spikelets 3-5-flowered, the rachilla articu¬ 
lated between the flowers; empty glumes much shorter than the 
