|Monocotyledon|| Literature for Setaria verticillata
Lorence & Wagner, 2020.
|Poaceae -- The Grass Family||Bibliography|
Common name(s): bristlegrass, foxtail, bristlt foxtail, mau`u pilipili
|Distribution||Native to Europe, now widely naturalized.In the Hawaiian Islands, naturalized on Kure, Midway, Pearl and Hermes, French Frigate Shoals, Nihoa, Ni`ihau, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i.|
||Tufted annual; culms (2‒)3‒10 dm
tall, often geniculate and branching at
proximal nodes, glabrous except above
near the panicles.
||Leaves with sheath compressed-keeled, glabrous, distal margin ciliate; ligule ciliate, 0.7‒2 mm long; blade flat, 5‒20 cm long, 5‒10(‒18) mm wide, glabrous to scaberulous, sometimes
sparsely pilose, margin scabrous.
||Inflorescences paniculate, yellowish green to purple tinged, densely flowered, cylindrical, (2‒)4‒10(‒15) cm long, axis densely retrorsely hispidulous, primary branches short, whorled. Spikelets several to numerous per branch, subtended by 1‒4 bristles, bristles 2‒4.5(‒6) mm long, retrorsely scabrous; glumes unequal, first glume
broadly ovate, 0.5‒0.7(‒1.2) mm long, ca. ⅓ as long as the spikelet, 1(‒3)-veined, apex obtuse, sometimes mucronate, second glume ovate, 1.6‒2 mm long, slightly shorter than first lemma, 5‒7-veined, apex rounded; first lemma 1.5‒2.4 mm long, 7-veined, apex rounded; first palea small, membranous; second lemma ovate, 1.8‒2.3 mm long, weakly 3-veined, finely
transverse rugose; second palea similar in texture to second lemma.
||Caryopses pale brown, broadly ovoid, slightly dorsiventrally compressed, 1.2‒1.5 mm long.
||2n = 18, 20, 36, 54.