Fig. 171.—Aristida Adscenscionis.
Aristida Adscenscionis, L.
This grass is usually an annual becoming a perennial under favourable conditions. Stems are slender, sometimes even filiform, erect, or ascending, simple or branched, varying in length from 9 inches to 3 feet.
The leaf-sheath is glabrous, thinly striate. The ligule is a row of fine short hairs. Nodes are glabrous.
The leaf-blade is narrow, linear, tapering to a fine point, convolute in bud, scabrid above and smooth below, with a minutely serrate, very narrow, hyaline margin, 1 to 10 inches long and 1/12 inch broad.
The inflorescence is a lax, narrow, subsecund panicle, varying in length from 3 to 12 inches, and with a slender glabrous peduncle; the main rachis is filiform and glabrous; branches are either solitary or binate, unequal; branched either from the middle or the base; pedicels are short and capillary.
