Panicum verticillatum L., Sp. Pl. ed. 2. 82. 1762.
Annuals; clum usually 20-100 cm high, geniculate. Blade 5-18 mm wide, thin, with nimutely tubercle-
based hairs; sheath hairy or glabrous, margins ciciate; ligule a ring of hairs, ca. 1 mm long. Panicle
contracted, cylindrical, 2-10 cm long, branches interrupted. Spikelets 1.8-2 mm long, subtended by 1-4
bristles, these 4-16 mm long, flattened in lower part, margins with barb like hairs directed downwards;
lower glume ca. 1 mm long; upper glume as long as spikelet, 5-veined; lower lemma equaling spikelet,
rarely with a minute lower palea; upper lemma finely and transversely rugose; anther ca.0.7 mm long.
TAIPEI: Yehliu, Kuoh 2345. CHANGHUA: Lukang, Kuoh 1643. CHIAYI; Hantzyliau, Wang 20111.
TAINAN: Chishan, Hsu 6472. PINGTUNG: Lioukuaitsuo, Hsu 9313. HUALIEN: Tienhsiang, Hsu 7013.
Tropical and temerate regions of the Old World. Taiwan, common in open and waste places.