Panicum crus-galli L., Sp. Pl. 56. 1753.
Echinochloa crus-galli (L.) P. Beauv. var. formosensis Ohwi, Acta Phytotax. Geobot.11: 38. 1942; Hsu, Fl. Taiwan
5: 554. 1978.
Panicum oryzicola Vasinger, Trudy Prikl. Bot. Selekts. 25(4): 125. 1931.
Echinochloa crus-galli (L.) P. Beauv. var. oryzicola (Vasinger) Ohwi, Acta Phytotax. Geobot. 11: 38. 1942;
Hsu, Fl. Taiwan 5: 554. 1978.
Echinochloa crus-galli (L.) P. Beauv. var. praticola Ohwi, Acta Phytotax. Geobot. 11: 37. 1942; Hsu, Fl. Taiwan
5: 554. 1978.
Annuals; culm caespitose, 30-100 cm tall. Blade linear, 10-40 cm long, 2-15 mm wide; sheath
slightly keeled; ligule absent. Panicle 10-20 cm long, axis often papillose-hisped, racemes 2-7 cm long.
Spikelets 3-5 mm long, awned or awnless, hispid on veins, interveins scabrous to hispidulous; glumes
minutely hairy, with longer, rigid hairs on veins; lower glume ca. equaling lower lemma, acuminate to
awn-pointed; upper lemma pale, coriaceous; lower lemma mucronate-tipped or with an awn as much as
4 mm long.
ILAN: Chiaohsi, Hsu 817; Tali, Hsu 804. TAIPEI: Hsiaokotou, Moo 1030; Taipei, Hsu 39308. HSINCHU:
Hsinpu, Chuang 2562. YUNLIN: Mailiao, Chuang 2562. PINGTUNG: Pingtung, Shimada s. n. TAITUNG: Lanyu
Is., Liu 252; Tawu, Hsu 1020.
Tropical Asia and Africa. A very variable weedy species; several varieties ( 4 in Taiwan) were recognized.
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 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: 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: 70 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
