Digitaria violascens

紫果馬唐

Digitaria violascens Link

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

Link. 1827. Hortus Berolinensis 1: 229. (Hort. Berol.)

台灣首次記錄發表文獻

Ohwi. 1942. Acta phytotaxonomica et geobotanica eng 11: 32. (Acta Phytotax. Geobot.)

異名

Digitaria ischaemum (Schreb.) Muhl. var. asiatica Ohwi

Ohwi. 1942. Acta phytotaxonomica et geobotanica eng 11: 32. (Acta Phytotax. Geobot.)

各語言俗名

中

紫果馬唐
英

Violet crab grass
日

あきめひしば

參考文獻

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

特徵描述

生活型

herb

形態特徵

Annuals; culm tufted, 20-50 cm tall.
Blade less than 12 cm long, 3-6 mm wide; sheath mostly shorter than internode; ligule truncate, membranaceous, erose, brownish, 1-1.5 mm long.
Racemes 3-9, 4-14 cm long, slender; rachis glabrous, flat, serrately winged, ca. 0.6 mm wide; pedicel terete to slightly flattened, one ca. 2 mm long and other only 0.5 mm long. Spikelets paired, elliptic, minutely covered with verrucose hairs, ca. 1.5 mm long; lower glume absent; upper glume more than 3/4 as long as spikelet, 3-veined, interveins white hairy; lower lemma as long as spikelet, veins distinct; upper lemma acute, dark brown or blackish purple at maturity.

分布

台灣 : weedy in sunny places.
世界 : Tropical regions of both hemispheres.

引證標本

ILAN: Kueishan, Hsu 881. TAIPEI: Hsitzu, Hsu 95; Kankou, Hsu 649. TAOYUAN: Neili, Hsu 1234. MIAOLI: Lungkang, Chuang 2587. TAICHUNG: Kukuan, Hsu 459; Nankanchi, Hsu 572. NANTOU: Chitou, Chuang 3164. CHIAYI: Alishan, Huang & Kao 1778. TAINAN: Peimen, Morimoto 670. PINGTUNG: Pingtung, Hsu 745. TAITUNG: Ansou, Hsu 1068.