Digitaria radicosa

小馬唐

Digitaria radicosa (J. Presl) Miq.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

名彙資訊

學名發表文獻

Miq., Flora van Nederlandsch Indië 3: 437. 1857. (Fl. Ned. Ind.)

台灣首次記錄發表文獻

Hsu, Taiwania 16: 281. 1971.

異名

Syntherisma formosana Honda var. hirsuta Honda

Honda, The Botanical magazine, Tokyo 38: 123. 1924. (Bot. Mag. Tokyo)
Syntherisma formosana (Rendle) Honda

Honda, The Botanical magazine, Tokyo 38: 122. 1924. (Bot. Mag. Tokyo)
Digitaria timorensis (Kunth) Balansa

Ohwi, The Botanical magazine, Tokyo 55: 542. 1941. (Bot. Mag. Tokyo)
Digitaria chinensis Hornem.

Tuyama, Journal of Japanese Botany 18: 11. 1942. (J. Jpn. Bot.)

各語言俗名

英

Chinese crab grass.
日

たいわんめひしば.

參考文獻

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)

特徵描述

生活型

herb

形態特徵

Annuals; culm base prostrate, branching, mostly less than 25 cm high, glabrous.
Blades 5-8 cm long, 2.5-6 mm wide; sheath glabrous, shorter than internode; ligule 1-1.5 mm long, membranaceous.
Inflorescence subcontracted with 2-3 digitate racemes, racemes 4-9 cm long, slender; rachis 0.6 mm wide, winged, entire or minutely serrulate. Spikelets narrowly lanceolate, 2.8-3 mm long, ca. 1 mm wide, with unequal scabrid triangular pedicels; lower glume minute but distinct, veinless, ca. 0.3 mm long; upper glume membranaceous, narrow, 3-veined, villous near margins, 2/3-3/5 as long as spikelet; lower lemma as long as spikelet, lanceolate, membranaceous, 7-veined, villous; upper lemma coriaceous, lanceolate, pale, as long as lower lemma.

分布

台灣 : in open sandy places.
世界 : Southeastern Asia, China and Polynesia.

引證標本

TAIPEI: Wulai, Hsu 80. HSINCHU: Kuangchi, Kuoh s. n. MIAOLI: Suitaoshan, Hsu 654. PINGTUNG: Kenting, Hsu 1099. TAITUNG: Ansuo, Hsu 1071. HUALIEN: Mataian, Suzuki 5220.