Annuals; culm branching and rooting at lower nodes, 15-50 cm tall. Blade at least hispid at base,
ovate to ovate-lanceolate, thin, cordate, clasping culm, 3-6 cm long, 1-2 cm wide; sheath glabrous, ciliate
on margins; ligule a ring of hairs, ca. 0.5 mm long. Panicle ovoid, open, 5-12 cm long, branches capillary.
Spikelets elliptic, turgid, purplish, narrowed at base, acutish, hispidulous, ca. 1.7 mm long; lower
glume oblong, acute, 3-veined, nearly as long as spikelet; upper glume and lower lemma equal in
length, 5-veined; lower palea as long as lower lemma; upper lemma ridged, smooth, coriaceous.
TAIPEI: Kankou, Hsu 643. NANTOU: Sun Moon Lake, Hsu 1333.
Tropical Africa and Asia. Taiwan, in thickets, forest margins, trails and rice fields.
leaf surface 表面: (fla)flat surface
sclerenchyma 厚壁組織: (boscl)(bostr)on both sides of veins as strand or girder
chlorenchyma 葉綠組織: (isach)cells elongate and radiate upward like crab legs
buliform cells not well developed 泡狀細胞不發達: (smreg)epidermal cells gradually enlarge from vein to intervein
chlorenchyma cell number between two adjacent veins: 6
chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (lit)with a little of chloroplast
mestome sheath 內束鞘細胞: (Xyms+)metaxylem pole adjacent with mestome sheath
distance between two adjancent vein 脈間距: 324 micrometer
length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 5