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Taiwan Gramineae | Family List | Poaceae | Microstegium

Microstegium ciliatum (Trin.) A. Camus, Ann. Soc. Linn. Lyon. n. s. 68: 201. 1921. Hsu, Fl. Taiwan 5: 672. 1978.

剛莠竹

Microstegium ciliatum

Credit: CS Kuoh, 2004 leaf anatomy

Pollinia ciliata Trin., Mem. Acad. St. Petersb. ser. 6. 2: 305. 1833.
Pollinia monantha var. formosana Hack., Bull. Herb. Boiss. 2(4): 527. 1904.
Pollinia formosana (Hack.) Hayata, Icon. Pl. Formos. 7: 76. 1918.
Microstegium formosanum (Hack.) A. Camus, Ann. Soc. L. Lyon n. s. 68: 201. 1921. Microstegium ciliatum var. integrum Ohwi, Act. Phytotax. Geobot. 11: 157. 1942.
Microstegium integrum Ohwi, Act. Phytotax. Geobot. 1l: 157. 1942.
Microstegium ciliatum subsp. integrum (Ohwi); Koyama, Grass. Jap. Neighb. Reg. 428. 1987

Culm geniculate, slender, about 1 mm in diameter. Blade 7-8 cm long by; 4 mm wide, attenuate at both ends, sparingly hirsute on both surfaces; ligule chartaceous, about 1 mm long or more, hispid on the back; sheath margins ciliate. Inflorescence digitate, 3 to several racemes, racemes 5-6 cm long. Spikelets paired, monomorphic, both fertile, the upper pedicellate, the lower sessile, about 3.8 mm long; pedicel and rachis flattened, as long as the spikelets. Lower glume lanceolate, 2-keeled, shortly ciliate on keels; upper glume deltoid-lanceolate, 3-nerve,l-keeled, margins slightly inrolled, fimbriate, as long as the spikelet; lower floret reduced. Upper floret minute, about 0.5 mm long; lemma 1-nerved, with a sinus at the apex, topped by a long awn of about 25 mm long; palea oblong, with a sinus. Caryopsis oblong, about 1.5 mm long; embryo 1/2 the length of the caryopsis.

TAIPEI: Kankou, Kao 263. MIAOLI: Tahu, Chen 50. NANTOU: Chitou, Hsu 8947. TAINAN: Kuantzulin, Wang 20020. PINGTUNG: Shihmen, Hsu 8000A. HUALIEN: Tien-hsiang, Shimizu 10623.

Distributed in India, Burma, Indo-China to South China.

midrib 中肋: (sm)small:with one vascular bundle

leaf surface 表面: (fla)flat surface

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

chlorenchyma 葉綠組織: (inrad)somewhat radiate and equal or
slightly large
than bundle sheath cell in width, distinctive cells presented 特異細胞

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: 1-2

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

distance between two adjancent vein 脈間距: 60-70 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 2

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

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Vascular Plant Type Catalog at NYBG: Link


 

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