_Distribution._--Plains and low hills throughout India and Ceylon. [Illustration: Fig. 160.--Andropogon annulatus. 1. Full plant; 2. base of the leaf and ligule.] =Andropogon annulatus, _Forsk._= This is a densely tufted perennial grass. The main stem is underground, rhizomiferous, and covered with scale leaves; branches are many arising in tufts, leafy, procumbent at base and afterwards geniculately ascending and ending in inflorescence, occasionally rooting at the nodes and varying in length from 2 to 3 feet. The internodes vary from 1-1/2 to 4 inches, pale or purplish, slightly flattened, smooth and glabrous. The _leaf-sheath_ is terete, glabrous, shining, green or purplish, closed, with margins where separate ciliated and profusely so at the tip especially the outer or both. The _ligule_ is membranous truncate, glabrous, about 1/16 inch in height. _Nodes_ are purple and softly villous. [Illustration: Fig. 161.--Andropogon annulatus. 1. Front and back views of a portion of the spike; 2. a sessile and a pedicelled spikelet; 3, 4, 5 and 6. the first, second, third and the fourth glume, respectively, of the sessile spikelet; 7. the ovary, stamens and lodicules; 8, 9 and 10. the glumes of the pedicelled spikelet.] The _leaf-blade_ is linear-lanceolate, acuminate, scabrid, sparsely hairy, becoming glabrous except at the base and with tubercle-based hairs on the upper surface. _The spikes_ vary in number from two to nine, erect or slightly spreading, subdigitately fascicled, pale when young and pinkish or brown when old, varying in length from 1 to 2-1/2 inches. The stalk of the whole inflorescence is long, slender, smooth and glabrous. The _peduncle_ of the spikes is from 1/8 to 1/6 of an inch long, thin, slender, glabrous with swollen bases and with a ring of hairs at the node. _Joints_ of the _rachis_ and the _pedicels_ are slightly flattened, ciliated along the narrow edges; the _pedicels_ of the stalked spikelets are half as long as the sessile spikelets. The spikelets are one sessile and one pedicelled and imbricating on the rachis. The _sessile spikelet_ is as long as the stalked or a little less, with a thick callus, shortly bearded at the base or sometimes glabrous and consists of four _glumes_. The _first glume_ is elliptic-oblong or oblong, obtuse or truncate, irregularly 2- or 3-toothed, 5- to 9-nerved, sparsely villous with long hairs and margins slightly infolded. The _second glume_ is smaller than the first glume, acute, membranous, 3-nerved and keeled, the margins are ciliate and infolded. The _third glume_ is hyaline, linear, acute, or obtuse, nerveless sparsely hairy at the tip, very much shorter than the second glume. The _fourth glume_ is an _awn_ with a linear hyaline base, erect, about an inch long. _Stamens_ are three, _ovary_ is oblong with two feathery, dark purple _stigmas_. _Lodicules_ are two, cuneate.