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Taiwan Gramineae | Family List | Poaceae | Setaria

Setaria geniculata P. Brauv., Ess. Agrostogr. 51. 1812; Hsu, Fl. Taiwan 5: 600, pl. 1446. 1978.


Setaria geniculata

Credit: CC Hsu

Perennials with knotty rhizome; culm erect, base geniculate. Sheath compressed and keeled; ligule a ring of haris. Spikelets ca. 2.5 mm long; glumes membranaceous; lower glume acute, to 1/3 length of spikelet, 3-veined; upper glume obtuse, to 1/2 as long as spikelet, 5-veined; lower lemma membranaceous, as long as spikelet, 5-veined; palea flattened, 2-keeled, as long as lemma; upper lemma indurate, rugose, 5-veined, palea flattened abaxially, 2-keeled, nearly as long as lemma and spikelet; anthers up to1 mm long. Caryopsis ca. 1.5 mm long, clasped by broad margins of palea.

ILAN: Kuaishan, Kuoh 2471.TAIPEI: Shihmen, Hsu 1262. TAOYUAN: Neili, Hsu 1237. HSINCHU: Hsinchu, Huang 2112; Yuen Yang Lake, Hsu & Kuoh 14532. MIAOLI: Tahu, Cheng 78. TAICHUNG: Lishan, Kuoh 80122. NANTOU: Kuantaochi, Hsu 10659; Sun Moon Lake, Hsu 1314. TAINAN: Hsinhua, Hsu 326. PENGHU: Hongkuawy, Hsu 11553; Makung, Kuoh 1099. PINGTUNG: Ssuchungchi, Hsu 1111. TAITUNG: Lanyu Is., Hsu 1003; Tawu, Hsu 330. HUALIEN: Chilaishan, Sasaki s. n.

Originally from tropical America, introduced into other countries. Taiwan, in moist places.

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: (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 well developed 泡狀細胞發達: (bboth)appear both in adaxial and abaxial side

chlorenchyma cell number between two adjacent veins: 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

distance between two adjancent vein 脈間距: 85 micrometer

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

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


Related Objects  
  • drawing (CC Hsu)
  • Image/JPEG

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