Cyperus sanguinolentus

紅鱗扁莎

Cyperus sanguinolentus Vahl

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

Vahl. 1805. Enum. Pl. Obs. 2: 351.

台灣首次記錄發表文獻

Koyama. 1961. Quarterly journal of the Taiwan Museum 14: 183. (Quart. J. Taiwan Mus.)

異名

Cyperus sanguinolentus Vahl

Koyama. 1961. Quarterly journal of the Taiwan Museum 14. (Quart. J. Taiwan Mus.)
Pycreus sanguinolentus (Vahl) Nees ex C. B. Clarke

Koyama. 1978. Flora of Taiwan 5: 278. (Fl. Taiwan)

各語言俗名

中

紅鱗扁莎
英

Red scaled flat sedge
日

かわらすがの

參考文獻

Yang. 1982. A list of plants in Taiwan. (List Pl. Taiwan)
Larridon, I.,...Baker, W. J. 2021. Journal of Systematics and Evolution 59(4): 852-895.

特徵描述

生活型

herb

形態特徵

Annual with fibrous roots only. Culms tufted, 10-40 cm tall, lower part decumbent, rooting, often branching at nodes, upper part erect to erect-ascending.
Leaves borne on lower part of culms, shorter than culm; blades linear, 2-3 mm wide, flattish plicate; sheaths pale-green or lower ones stained with brown.
Corymbs with 2-5 short rays or more or less congested in a head-like cluster, 2-6 cm long and as wide, rays 1-4 cm long; spikes short, densely bearing 4 to 12 spikelets; leafy bracts 3 or 4, spreading, surpassing corymb. Spikelets linear-oblong or lanceolate-oblong, subacute at apex, 1-2 cm long, 2-3.5 mm wide, flattened, 10-30-flowered, sanguineous-brown; rachilla tetragonous.
Glumes ovate to broadly so, 2-2.5 mm long, obtuse at apex, membranaceous, 3- or 5-nerved, pale brown to sanguineous brown, furrowed on both sides, keel rather broadly straw-green. Achenes broadly obovate, laterally lenticular, 1/2-3/5 as long as glume, maturing black, minutely puncticulate; style to 3 times as long as achene; stigmas 2.

分布

台灣 : Wet places.
世界 : Widely distributed in temperate and subtropical regions of the Old World, from Africa to Malesia and Japan.

引證標本

TAIPEI: Hukueichiao, Suzuki s. n. 27 Oct 1932; Huangtitien. Kuoh 4406; Nankang, Kuoh 2222. TAOYUAN: Taoyuan, Sasaki s. n. 31 Oct 1925. NANTOU: Sun Moon Lake, De vol 7492; Hoshe, Suzuki 439; Chitou, Kuoh 965. TAITUNG: Lanyu Is., Masamune 4164; Chihpen, Chuang 2063.