Monographs Details: Echinochloa
Authority: Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Description:Genus Description - Spikelets planoconvex, with one perfect terminal fl and one neuter (ours) or sometimes staminate floret below, sessile or nearly so, crowded in 4–several rows in thick racemes or spikes, these aggregated into a terminal panicle; first glume 3-veined, awnless or minutely awn-tipped, usually less than half as long as the second; second glume and sterile lemma prominently 5-veined, surpassing the fertile lemma, one or both often awned from the tip; sterile lemma with a well developed palea; fertile lemma with a firm, cartilaginous, rounded, smooth, shiny body narrowed to a ± differentiated tip, its palea of similar texture, with the margins (but not the tip) clasped by the lemma; ours annuals with compressed sheaths, no ligule, and soft, elongate lvs, these incised at the base. 40, mostly in warm reg.