296 
OHIO BIOLOGICAL SURVEY 
Tribe, Chlorideae. Chloris Tribe. 
Grasses ivith i-several-flozvered, laterally compressed spikelets, 
jointed above the empty glumes and borne in 2 rows on one side of a 
continuous axis, forming spikes which are digitately or paniculately 
arranged, or sometimes solitary. 
29. Spartina Schreb. Slough-grass. 
Coarse perennial glabrous grasses with strong horizontal 
rhizomes, rigid stems, long tough leaves, and an inflorescence of 
one-sided spreading or erect alternate spikes. Spikelets 1-flowered, 
flattened laterally, borne in two rows on the rachis; empty glumes 
unequal, keeled, acute or bristle-pointed; lemma obtuse, 1-nerved; 
palet equaling or exceeding the lemma, 2-nerved; grain free. 
1. Spartina michauxiana Hitch. Tall Slough-grass. A coarse 
grass with a simple erect stem, 2-10 ft. high, with an inflorescence 
of 5-20 spike-like branches. Leaves with a scabrous cutting edge. 
Spikelets much imbricated; lemma glabrous except the serrulate- 
scabrous midnerve which terminates abruptly below the emarginate 
or 2-toothed apex. 
Used for thatching and in making coarse mats. In swamps and 
streams of fresh or brackish water, in wet ravines, and even sand 
dunes. August-October. Rather general; no specimens from the 
central, eastern nor from the southwestern counties. 
30. Beckmannia Host. Beckmannia. 
A tall, erect perennial grass with flat leaf-blades and erect spikes 
borne in a terminal panicle. Spikelets 1-2-flowered, globose, lat¬ 
erally compressed, closely imbricated in two rows along one side 
of a continuous rachis; empty glumes subequal, inflated, boat-shaped, 
chartaceous, with scarious margins; lemma narrow, lanceolate, thin- 
membraneous ; palet hyaline, 2-keeled; grain free, enclosed in the 
lemma and palet. 
1. Beckmannia erucaeformis fL.) Host. Beckmannia. A glab¬ 
rous grass with flattened wiry stems, 1^-3 ft. high, and a panicle of 
appressed spikes. Spikelets nearly circular in outline, closely imbri¬ 
cated in 2 rows on the rachis; empty glumes transversely wrinkled; 
lemma with an acuminate apex. 
In wet ground. July-September. Cuyahoga County. 
