Cynosurus aegyptius L., Sp. Pl. 72. 1753.
Inflorescence of 2-7, usually 4, stout digitate spikes. Spikelets usually 3-flowered, 3-4 mm long; glumes keeled, the keel hirsute, 1-nerved; lower glume with an awn of 1-2 mm long, semi-ovate in side view, pointed, about 2.5 mm long, upper glume as long as the lower glume, with a slightly curved strong awn of about 1 mm long; lemma keeled, pointed, oblong-ovate in side view, 3 mm long, 3-nerved, lateral nerves close to the margins; anthers 3, about 0.5 mm long. Utricles globose, rugose, about 1 mm long.
TAIPEI: Shihmen, Hsu 1275; Chinshan, Hsu 1278. ILAN: Suao, Kuoh 1728. MIAOLI: Tahu, Cheng 79. TAICHUNG: Fantsuliao, Hsu 9146. CHANGHUA: Lukang, Kuoh 1640; Chihu, Hsu 4719. NANTOU: Sun Moon Lake, Moo 2074. CHIAYI: Chiayi, De Vo1 7094; Hsinkang, Hsu 294. YUNLIN: Huwei, Kao & Hsu 268; Mailiao, Hsu 20150, TAINAN: Hsinhua, Hsu 702. KAOHSIUNG: Kaohsiung, Hsu s. n. June 9, 1968. PENGHU: Penghu, Hsu 673. PINGTUNG: Hengchun, Wang 12722. Chiuchutan, Chuang 1532*. TAITUNG: Tawu, Hsu 978; Botel Tobago, Hsu 9361; Green Island, Hsieh s. n. Oct. 9, 1975.
Distributed in the tropical regions of the Old World.
This grass is said to be rich in cyanogenetic glycoside and thefore is a danger to stock at certain times. It is found usually in sandy soils.
leaf surface 表面: (fla)flat surface
sclerenchyma 厚壁組織: (abscl)on abaxial side of vein
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
with small vein under buliform cells泡狀細胞下有小脈: (bchal)bulliform sets connect with colorless cells in long row
chlorenchyma cell number between two adjacent veins: 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 mestome sheath
distance between two adjancent vein 脈間距: 98 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