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Taiwan Gramineae | Family List | Poaceae | Arundinella

Arundinella setosa Trin., Gram. Panic. 63. 1826. Hayata, Icon. Pl. Form. 7: 67. 1918; Honda, l. c. 31l. 1930; Hitchc. in Lingn. Sci. Journ. 7: 208. 1931; Ohwi, l. c. 10: 272. 1941; Senaratna, l. c. 98. 1956; Keng, l. c. 732. f. 681. 1959; Bor, Grass. India 424. 1960; Hsu in Hara, Fl. E. Himalaya 352. 1966, in Taiwania 16: 269. 1971, Taiwan Grass. 461. p1. 125. 1975.

刺芒野古草

Arundinella setosa

Rhizome short, hard; culms erect, tufted, 20-120 cm high, 1.5-5 mm across. Blade 10-40 cm long by 3-10 mm wide, usually covered with tubercle hairs; ligule membranous, about 0.5 mm long; sheath usually tubercle hairy, margin ciliated, shorter than the internode. Panicle slightly contracted, 10-30 cm long. Spikelets lanceolate, 5-7 mm long, hispid hairy at the basal part. Glumes ovate-lanceolate, subulate-lanceolate at the apex, nerves scabrous; lower glume 3-5-nerved, 3-5 mm long, about 3/5 as long as the spikelet; upper glume nearly as long as the spikelet, 5-nerved; lower lemma slightly shorter than the lower glume, glabrous, 5-nerved, staminate; anthers about 1.5 mm long; upper lemma about 2.5 mm long, scabrous, the midrib prolonged into a geniculate long awn; lateral nerves also prolonged into short awns; callus with soft hairs of about 0.7 mm long.

TAIPEI: Peitou, Kuoh 2265; Kuangyingshan, Hsu 1145 ILAN: Shiyuaniakou, Kuoh s. n. Aug. 22, 1970. MIAOLI: Shihshan, Hsu 657. TAICHUNG: Houli, Hsu 4592. NANTOU: Kuantaochi, Hsu & Kuoh 10658; Wushe, Masamune et a1. s. n. in 1962. CHIAYI: Fenchihu, Feng & Kao 4948. TAITUNG: Ansow, Hsu 1065; Chihpen, Koyama 13072*. HUALIEN: Shuakonlu, Kuoh 2622;Da-Chi, Tai9-421.9K, YF Chen 20641.

Widely distributed in South-east Asia.

This is a variable species with a bent awn flanked by two bristles on its lemma. The pedicels of the spikelets are most usually decorated with well-defined bristles or setae.

leaf surface 表面: (sha)upper surface with shallow notch
between the veins

sclerenchyma 厚壁組織: (bAgir)on both sides of some veins
as anchor-sahped girder

chlorenchyma 葉綠組織: (radia)cells radiate and lesser than
bundle sheath cell in width, distinctive cells presented 特異細胞

bundle sheath 維管束鞘: (sk)single bundle sheath with
conspicuous chloroplast

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: (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: 76 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


 

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