Echinochloa polystachya

Description

The relatively robust flowering stems (7-15 mm thick) are cylindrical and usually have about 7-10 joints . These stems are hairless , except at the joints, which sometimes have a tuft of yellowish hairs .The leaves are alternately arranged along the stems and sometimes have a reddish or purplish tinge. They consist of a leaf sheath, that partially encloses the stem, and a long and narrow leaf blade (20-60 cm long and 10-35 mm wide) that tapers to a narrow tip . Where the leaf sheath meets the leaf blade there is a line of stiff, yellowish, hairs 2-4 mm long. The leaf sheaths are hairless or sparsely hairy . The leaf blades are flatenned, hairless, smooth, and have rough margins and a prominent central vein .