Pennisetum setosum (Swartz) L. C. Rich.
Perennials; rhizome short. Culms tufted, 50-150 cm high; flowering clums arising from nodes
below middle part; peduncle hairy. Blade 3-15 mm wide; ligule a ring of long hairs, ca. 1 mm long;
sheath loose, hispid, margin ciliated, old remains persistent. Panicle contracted, 10-25 cm long, yellow
to purplish, spikelets reflexed when mature. Bristles unequal, outer ones shorter, inner ones feathery, to
1 cm long. Spikelets ca. 3 mm long, ovate-lanceolate, more or less pubescent; lower glume reduced;
upper glume and lower lemma subequal to spikelet, 5-veined, fringed at summit, ovate-elliptic; lower
lemma enclosing lower palea of same length, lower palea with hairs at tip and on keels; upper floret cartilaginous,
ca. 2 mm long; lodicule absent, anthers ca. 2 mm long.
MIAOLI: Tapu, Hsu s. n. TAINAN: Hsinhua, Hsu & Wang 10446. KAOHSIUNG: Tashu, Hsu & Lin 6623.
Originally from tropical America and Africa, but now introduced to many countries. Taiwan, hillsides
in the central and southern parts.
leaf surface 表面: (sha)upper surface with shallow notch between the veins
sclerenchyma 厚壁組織: (trstr)strand trichome-like
chlorenchyma 葉綠組織: (radia)cells radiate and lesser than bundle sheath cell in width
bundle sheath 維管束鞘: (sk)single bundle sheath with conspicuous chloroplast
buliform cells well developed 泡狀細胞發達: mainly appear in adaxial side
with small vein under buliform cells泡狀細胞下有小脈: (fansh)bulliform set shell-shaped or fan -shaped
chlorenchyma cell number between two adjacent veins: 2
chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (out)large amount and in centrifugal site
mestome sheath 內束鞘細胞: (Xyms -)metaxylem pole adjacent with outer bundle sheath
distance between two adjancent vein 脈間距: 100 micrometer
length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 3
chlorenchyma cell shape in LS 葉綠細胞縱面形狀: lobed