Setaria apiculata (Scribn. & Merr.) K.Schum.
Schumann, K.M. (1902) Botanischer Jahresbericht [Just] 28(1): 417.
Inflorescence a spiciform panicle, linear in outline, 2-5 cm long. Primary panicle branches not whorled to whorled at most nodes, bearing 1 fertile spikelet on each lower branch, but sterile at the tips. Panicle axis pubescent. Peduncle scaberulous above. Spikelets subtended by 4-5 scabrid bristles. Involucral bristles persistent, 4-8 in a principal whorl, 8-12 mm long, flexible, antrorsely scaberulous, glabrous. Pedicels reduced to a stump with a cupuliform tip. Fertile spikelets 2-flowered, comprising 1 fertile floret, lower floret sterile, upper fertile, without rhachilla extension, elliptic or obovate, slightly dorsally compressed, gibbous, 3-3.4 mm long, falling entire. Glumes thinner than fertile lemma. Lower glume ovate, 1.5-2.7 mm long, more than half the length of the spikelet, membranous, 3-5-nerved. Lower glume apex acute or acuminate. Upper glume elliptic or ovate, 2.3-3.8 mm long, nearly as long as the spikelet, membranous, 5-7-nerved. Upper glume apex acuminate. Basal sterile floret 1, with palea. Lemma of lower sterile floret ovate, 2.9-4 mm long, same length than the spikelet, membranous, 5-7-nerved, with nerves meeting and uniting at apex, glabrous, acute. Fertile lemma ovate, dorsally compressed, 2.5-4 mm long, indurate, yellow or dark brown, 5-nerved. Lemma surface rugose, margins involute, apex acute or apiculate, mucronate. Palea involute, indurate, surface rugose.
Features not available.