Poa ferruginea Thunb., FI. Jap. 50. 1784.
Culm erect, tufted. Blade linear-lanceolate, 20-30 cm long by 5 mm wide, surface sparingly covered with silky hairs, especially at base; sheath-mouth covered with a ring of long silky hairs. Inflorescence a large open panicle, about 28 cm long. Spikelets blackish-purple, several-flowered, usually 7 florets, about 6 mm long by 2 mm wide; glumes subcoriaceous, 1-nerved; the lower linear lanceolate, about 1.2 mm long; the upper lanceolate, about 1.6 mm long; lemma of the same texture as the glumes, about 2.5 mm long, ovate, 3-nerved; palea chartaceous, about 2 mm long, elliptical, 2-keeled, minutely scabrid along keels. Caryopsis about 1 mm long reticulate on the surface, rectangular in cross-section, embryo 2/3 the length of the caryopsis.
TAIPEI: Shihting, Kuoh 2457; Hsiaokotou, Hsu 5338, 6522; Yinghotung, Hsu & Kuoh 10829.
Distributed in Sikkim and Tibet, extending to China and Japan.
In Taiwan, it has been collected on the hills of northern Taiwan.
midrib 中肋: (sm)small:with one vascular bundle
leaf surface 表面: (nod)nodules on both surfaces
sclerenchyma 厚壁組織: (boscl)(bostr)on both sides of veins as strand or girder
chlorenchyma 葉綠組織: (radia)cells radiate and lesser than bundle sheath cell in width
bundle sheath 維管束鞘: (dko)two bundle sheaths the outer one with conspicuous chloroplast
buliform cells well developed 泡狀細胞發達: mainly appear in adaxial side
no small vein under buliform cells泡狀細胞下無小脈: (bcfan)bulliform cell with colorless cells extend beneath it
chlorenchyma cell number between two adjacent veins: 4
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 mestome sheath
distance between two adjancent vein 脈間距: 127 micrometer
length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 1
chlorenchyma cell shape in LS 葉綠細胞縱面形狀: lobed