This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol1", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Tufted annual or perennial grasses, with flat leaf-blades and spicate inflorescence, the spikes digitate or close together at the summit of the culm. Spikelets several-flowered, sessile, closely imbricated in two rows on one side of the rachis, which is not extended beyond them; flowers perfect or the upper staminate. Scales compressed, keeled; the 2 lower empty; the others subtending flowers, or the upper empty. Stamens 3. Styles distinct. Stigmas plumose. Grain loosely enclosed in the scale and palet. [From the Greek name of the town where Ceres was worshipped.]
Species 6, natives of the Old World. Besides the following, two others have been found in ballast fillings about the eastern seaports. Type species: Cynosurus coracanus L.
Cynosurus indicus L. Sp. PI. 72. 1753.
Eleusine indica Gaertn. Fruct. & Sem. 1: 8. 1788.
Culms 6-2° tall, tufted, erect, or decumbent at the base, smooth and glabrous. Sheaths loose, overlapping and often short and crowded at the base of the culm, glabrous or sometimes sparingly villous; ligule very short; blades 3-12' long, 1"-3" wide, smooth or scabrous; spikes 2-10, l'-3' long, whorled or approximate at the summit of the culm or one or two sometimes distant; spikelets 3-6-flowered, 1 1/2"-2" long; scales acute, minutely scabrous on the keel, the first 1-nerved, the second 3-7-nerved, the others 3-5-nerved.