Amaranthus pumilus Raf.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Monoecious; stems fleshy, prostrate or decumbent, branched from the base, 1–4 dm; lvs fleshy, round-obovate, 1–2 cm, ± retuse at the broadly rounded summit, abruptly narrowed to a 5–10 mm petiole; fls in dense axillary clusters; stamens 5; sep of pistillate fls 5, oblong- oblanceolate, unequal, cucullate, 2–4 mm, twice as long as the lanceolate bracts; fr fleshy, indehiscent, thick-fusiform, 4–5 mm, smooth or rugulose; seed elliptic, 2–2.5 mm. Sea-beaches; Mass. to N.C.; rare.