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Taiwan Gramineae | Family List | Poaceae | Microstegium

Microstegium glaberrimum (Honda) Koidz., Bot. Mag. Tokyo. 43: 394. 1929. Hsu, Fl. Taiwan 5:674. 1978.

短軸莠竹

Microstegium glaberrimum
living plant

Credit: JW Lin

Pollinia glaberrima Honda, Bot. Mag. Tokyo 39: 42. 1925.

Culm geniculate, about 1.5 mm across. Blade about 7 cm long by 7 mm wide, nearly glabrous; ligule tongue-like, hispid on the back, about 1.4 mm long; sheath glabrous. Racemes 5-6, subdigitately arranged, about 5-6 mm long. Spikelets paired, monomorphic, the upper pedicellate, the lower sessile, about 3.2 mm long, longer than the rachis-joint. Lower glume subcoriaceous, lanceolate, 2-keeled, ciliate along keels, furrowed on the back, as long as the spikelet; upper glume deltoid-lanceolate, 1-keeled, keel ciliate, margins inrolled, fimbriate, tipped with a slender awn nearly as long as the glume; lower lemma sometimes present, linear, hyaline, 1-nerved, ending in a long slender awn of about 8 mm long. Upper floret minute; lemma about 0.2 mm long, with a flexuous awn of about 15 mm long; palea chartaceous, ovate, with a sinus or irregular at the apex, about 0.5 mm long.

TAIPEI: Kuanyingshan, Hsu 587; Wulai, Hsu 71. MIAOLI: Nanchuang, Hsu 12901. TAICHUNG: Hsinshe, Oomuna 27. NANTOU: Chitou, Hsu 258. KAOHSIUNG: Shihshan, Hsu 13826. TAITUNG: Tsaopu, Hsu 1025; Botel Tobago, Sasaki s. n. Oct. 30, 1934.

Endemic, on hillsides.
This species may be a form of Microstegium ciliatum.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (mistr)strand variable with size of vein

bundle sheath 維管束鞘: (sk)single bundle sheath with
conspicuous chloroplast

buliform cells not well developed 泡狀細胞不發達: (nobul)if present only along side of midrib

chlorenchyma cell number between two adjacent veins: 2-3

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (per)large amount and in peripheral site

mestome sheath 內束鞘細胞: (Xyms -)metaxylem pole adjacent with
outer bundle sheath

chlorenchyma cell shape in LS 葉綠細胞縱面形狀: lobed

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Related Objects Image Gallery 
  • Image/JPEG (cs kuoh, 2004 leaf anatomy)
  • Image/JPEG
  • living plant (JW Lin)
  • Image/JPEG
  • Image/GIF (CC Hsu, 1975 Taiwan Grasses)
  • Image/GIF

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