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Taiwan Gramineae | Family List | Poaceae | Sporobolus

Sporobolus virginicus (L.) Kunth, Rev. Gram. 1: 67. 1829. Hsu, Fl. Taiwan 5: 504. 1978; Koyama, Grass. Jap. Neighb. Reg. 277. 1987; Baaijens & Veldk., Blumea 35:445. 1991.


Sporobolus virginicus
leaf cs section-2

Credit: cs kuoh

Culm genticulate at the basal nodes. Blades coriaceous, needle-like at the end, about 6 cm long by 1-1.5 mm wide; ligule about 0.2 mm long, upper margin and backside ciliate. Inflorescence a contracted panicle, about 8 cm long. Spikelets 1-flowered, about 2.5 mm long; glumes chartaceous; the lower about 1.2 mm long, lanceolate, irregularly toothed at the apex, nerveless; the upper lanceolate, 1-nerved, acute; lemma and palea the same texture with the glume; lemma ovate lanceolate, 1-nerved, boat-shaped, about 2 mm long; palea ovate 2-keeled, truncate at the apex. Fruit an utricle, about 1 mm long; embryo more than 1/2 the length of the utricle.

CHANGHUA: Shikang, Guo et al. 44. CHIAYI: Chientungkang, Lin s. n. Aug. 7, 1970. YUNLIN: Mailiao, Suzuki 6552; Taihsi, Hsu 437. TAINAN: Anping, Hsu s. n. June 24, 1968. TAITUNG: Botel, Tobako, Liu et al 199; Green Island, Sasaki s. n. July 1935. PENGHU: Huang & Kao 6874.

Distributed in tropical Asia, Africa and America.

This is a common coastal grass growing along seashores in delta regions.

midrib 中肋: (no)not conspicuous

leaf surface 表面: (dee)upper surface with deep notch
between the veins

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: (bcxst)bulliform cells with colorless cells
form a X shape

chlorenchyma cell number between two adjacent veins: 2

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

mestome sheath 內束鞘細胞: (Xyms+)metaxylem pole adjacent with
mestome sheath

distance between two adjancent vein 脈間距: 125 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


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