300 
OHIO BIOLOGICAL SURVEY 
stems, 3^-1 ft. high, with inflated sheaths, and with the terminal 
panicle usually more or less included in the upper sheath, the lateral 
panicles enclosed in the sheaths. Lemma acute, glabrous, about 
equalling the acute palet. 
In dry and sandy soil. Aug., Sept. Cuyahoga, Wayne, Huron, 
Auglaize. 
4. Sporobolus cryptandrus (Torr.) Gr. Sand Dropseed. A per¬ 
ennial tufted grass with erect, simple stems, 13^-314 ft. high, or some¬ 
times branched at the base, and with an ample lead-colored, usually 
open panicle included at the base in the upper sheath. Leaves long- 
acuminate with a peculiar joint-like constriction about the middle 
of the blade and a ring of long white hairs at its base. Lemma acute, 
longer than the palet. 
In sandy soil. Aug.-Oct. Lucas, Ottawa, Erie, Lorain. 
5. Sporobolus heterolepis Gr. Northern Dropseed. A tufted 
perennial grass with rather stout, wiry, erect stems, 1-3 ft. high, and 
long exserted panicles with ascending branches. Lemma glabrous, 
obtuse or subacute. 
In dry soil. Aug., Sept. Franklin, Madison, Champaign. 
36. Calamagrdstis Adans. Reed Bent-grass. 
Tall often reed-like perennial grasses with flat leaf-blades, run¬ 
ning rhizomes, and panicles with many spikelets. Spikelets 
1-flowered, rachilla prolonged behind the flower into a hairy bristle 
or pedicle; empty glumes subequal, keeled, membranous; lemma 
awned on the back, surrounded at the base with copious long hairs; 
palet shorter than the lemma, 2-nerved; grain free, enclosed in the 
flowering glumes. 
1. Prolongation of the rachilla hairy its whole length; awn straight; panicle 
open, its branches spreading or ascending^ usually loosely flowered. 
C. canadensis. 
1. Prolongation of the rachilla hairy only at the summit; panicle contracted, 
its branches erect. C. cinnoides. 
1. Calamagrostis canadensis (Mx.) Beauv. Bluejoint Reed 
Bent-grass. A large grass with clustered, simple or somewhat 
branched, erect, hollow stems, 2-5 ft. high, and a loose, usually 
purplish panicle, the slender fascicled branches erect or ascending. 
Spikelets with copious hairs on the callus, about as long as the 
flowering glumes, and surrounding them; lemma thin, erose-truncate, 
bearing a delicate awn on the back. 
An important and valuable meadow grass, good for forage and 
hay. In swamps and wet soils. July-Sept. Northern Ohio, as far 
south as Stark, Franklin, and Auglaize Counties. 
