GRASSES OF OHIO 
303 
tween the teeth; palet rather firm, its two nerves close together; 
grain free, loosely enclosed in the flowering glumes. 
1. Ammophila arenaria (L.) Link. Sand Beach-grass. A glab¬ 
rous grass with erect, rigid, stout stems, 2-4 ft. high, from long 
horizontal branching rhizomes, and with a dense, spike-like, com¬ 
pressed panicle. Lemma scabrous, usually with a minute awn just 
below the apex. 
On sandy beaches of the sea coast and the Great Lakes. July, 
Aug. Erie County. 
41. Alopecurus L. Foxtail. 
Branching annual or perennial grasses with flat leaves, erect or 
decumbent stems, and soft dense spike-like panicles. Spikelets 1- 
flowered, flattened, falling from the axis entire; empty glumes usually 
somewhat united at the base, keeled; lemma broad, obtuse, 5-nerved, 
with a slender dorsal awn on the back; palet usually none. 
1. Lemma shorter than the obtuse, long-ciliate empty glumes; empty glumes 
less than yg in. long. A. geniculatus. 
1. Lemma as long as the acute long-ciliate empty glumes; empty glumes Yg-yi 
in. long. A. pratensis. 
1. Alopecurus geniculatus L. Marsh Foxtail. A grass, usually 
glabrous, with slender, decumbent stems, simple or sparingly 
branched, ft. high, and a slender spike-like panicle. Lemma 
obtuse, glabrous, with an awn inserted about one-fourth above its 
base. 
In wet soil. June-Aug. Lake, Ottawa, Crawford, Auglaize, 
Madison, Franklin, Perry. Introduced. 
2. Alopecurus pratensis L. Meadow Foxtail. A glabrous grass 
with slender, simple, erect stems, 1-2^4 ft. high, from short, creeping 
rhizomes, and with a spike-like panicle. Empty glumes united at 
the base for about one-fourth of their length; lemma obtuse, its awn 
inserted about one-fourth above the base. 
In meadows and pastures. May, June. No specimens. From 
Europe. 
42. Heleochloa Host. Cat-tail-grass. 
Low tufted branching annuals or perennials with flat leaves and 
numerous spike-like panicles partly included in the inflated sheaths. 
Spikelets 1-flowered, flattened; empty glumes subequal, membranous, 
acute, ciliate keeled; lemma 1-nerved; palet shorter, 2-nerved; grain 
free, oblong, loosely enclosed in the flowering glumes. 
1. Heleochola schoenoides (L.) Host. Cat-tail-grass. A low, 
cespitose, glabrous annual, usually almost prostrate, with branched 
