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Taiwan Gramineae | Family List | Poaceae | Schizachyrium

Schizachyrium brevifolium (Sw.) Nees ex Buse in Miq., Plant. Junghn. 359. 1854. Hsu, Fl. Taiwan 5: 691. 1978 .

裂稃草

Schizachyrium brevifolium
leaf cs section

Credit: cs kuoh

Andropogon brevifolius Sw., Prodr. Beg. Ind. Occ. 26. 1788.
Andropogon brevifolius Sw. var. paradosus (Buse) Ohwi, Act. Phytotax. Geobot 11: 169. 1942.

Culm slender, 0.2-0.5 mm across, tufted. Blade linear, about 3 cm long by 2 mm wide; sheath compressed; ligule membranous, 0.6-0.8 mm long, fimbriate at the apex. Inflorescence a solitary raceme. Spikelets paired, dimorphlc, the upper pedicellate and much reduced, about 1 mm long, the lower about 3 mm long; rachis-joint glabrous. Glumes chartaceous, margins folded, lower glume lanceolate about 2.8 mm long; upper glume slightly fimbriate, 1-nerved, as long as the lower. Lower floret reduced. Upper floret membranous, slightly shorter than the glume, about 2.5 mm long; lemma deeply 2-cleft, with a flexuous awn arising from the sinus; palea linear-lanceolate, 2-keeled, margins fimbriate.

TAIPEI: Leikungpo, Kuoh 2090. HSINCHU: Hsinchu, Hsu 1310: MIAOLI: Senghsing, Hsu 1350. PINGTUNG: Ssuchungchi, Hsu 13537. TAIWAN: Without locality Sasaki s. n. April 18, 1932.

Widely distributed in the Old World.

This delicate annual is found in waste fields and on hillsides. As the species matures the leaves and sheaths turn a rosy red. It is rather rare in occurence.

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: (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 not well developed 泡狀細胞不發達: (irreg)epidermal cells irregular in size

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: 58 micrometer


 

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