Monographs Details: Alternanthera
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 - Fls perfect; sep 5, distinct, unequal, white or greenish; filaments united at least below, the 3–5 antheriferous filaments alternating with 3–5 sterile ones; anthers bisporangiate and unilocular, style solitary, with a capitate stigma; ovule one; utricle membranous, indehiscent; annual or perennial herbs or shrubs with opposite, petiolate or sessile, entire or obscurely denticulate lvs; fls white or greenish, in terminal heads or short spikes. 170, warm reg.