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Taiwan Gramineae | Family List | Poaceae

Sacciolepis Nash

囊穎草屬

Sacciolepis indica
dawing

Credit: CC Hsu

Annuals; culms hollow; ligule membranaceous; leaf balde falte. Inflorescence a spike-like raceme or a contracted panicle, branched from all sides. Spikelets ovate-oblong, gibbous, otherwise terete or slightly laterally compressed, 2-flowered, muticous, articulated with pedicel; rachilla not produced, articulate above lower lemma, not or only slightly inflated; lower palea smaller, membranaceous; upper lemma much shorter than spikelet; upper glume and lower lemma as long as spikelet or upper glume slightly shorter; upper glume inflated at base, 7-11-veined; lower lemma not or only little inflated; lower palea smaller, membranaceous; upper lemma shorter than upper glume, papery, glossy and slightly indurated at maturity, with opaque margins embracing upper plaea nearly to apex; upper palea as long or slightly shorter, of same texture; stamens 3; ovary glabrous, style 2, free, stigmas pulmose, exserted below apex. Caryopsis free between upper palea and upper lemma. Together forming a false fruit with knob-like stipe.

About 30 species in tropics, with most species in Africa. One species in Taiwan.

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

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (boscl)(bostr)on both sides of veins as
strand or girder

chlorenchyma 葉綠組織: (isach)cells elongate and radiate upward
like crab legs

bundle sheath 維管束鞘: (nke)bundle sheaths without chloroplast

buliform cells well developed 泡狀細胞發達: mainly appear in adaxial side

with small vein under buliform cells泡狀細胞下有小脈: (fansh)bulliform set shell-shaped or fan -shaped

chlorenchyma cell number between two adjacent veins: 5

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (not)no chloroplast

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

distance between two adjancent vein 脈間距: 160 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 3

Lower Taxon


 

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Flora of China  
  • Sacciolepis.pdf
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