Polygonum longisetum

睫穗蓼

Polygonum longisetum De Bruyn

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

De Bruyn, Plantae Junghuhnianae 3: 307. 1854. (Pl. Jungh.)

台灣首次記錄發表文獻

Hsu, Polyg. Taiwan 20. fig. 19. 1967.

異名

Polygonum buisanense Ohki

Ohki, The Botanical magazine, Tokyo 39: 259. 1925. (Bot. Mag. Tokyo)
Persicaria buisanense (Ohki) Sasaki

Sasaki, List Pl. Form. (Sasaki) 168. 1928.
Polygonum caespitosum Bl. var. longisetum (De Bruyn) Stew

Kudo & Masam., Annual report of the Taihoku botanic garden, Faculty of Science and Agriculture, Taihoku Imperial Univeristy , Formosa, Japan 2: 51. 1932. (Ann. Rep. Taihoku Bot. Gard.)

各語言俗名

中

大蓼. 牛耳朵菜.
英

Winkle knotweed.
日

ほそばはなたで. いめたで.

參考文獻

W. C. Lin, Wild flowers of Taiwan - the 1300 species found in the lower elevation . 2005. (Wild flowers of Taiwan)
Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)

特徵描述

生活型

herb

形態特徵

Annual ascending or decumbent herbs, 20–80 cm tall; stems much branched, glabrous; nodes enlarged.
Leaves short petiolate or subsessile, lanceolate, 2–8 cm long, 1–2.5 cm wide, apex acuminate, base cuneate, both surfaces strigose, mainly on veins; ocreae tubular, 0.5–1 cm long, apex truncate, strigose, upper margins ciliate.
Inflorescences 4–6-flowered fascicles in spike-like racemes, terminal or axillary, densely flowered, interrupted below, 2–4 cm long; peduncles glabrous, 2–3.5 cm long; bracts oblique-funnelform, glabrous, upper margins ciliate. Flowers white; pedicels included; perianth segments 5, broadly ovate, ca. 2 mm long, apex rounded; stamens 8; styles 3-cleft, included; nectaries present.
Achenes black, trigonous, smooth, shining, ca. 2 mm long.

分布

台灣 : in open grassy waste fields and along roadsides in lowlands.
世界 : India, Kashmir, Nepal, China（except Xinjiang), Myanmar, Indonesia, Malaysia, the Philippines, Korea, Japan, the Ryukyus and Russian Far East.

引證標本

TAIPEI: Mouchi, Chiang 298. ILAN: Suyuan, Huang 7313. HSINCHU: Chingtsaohu, Chuang & Kuo 4665. MIAOLI: Tahu, Chen 28. NANTOU: Hsitou, Huang et. al. 16318. TAICHUNG: Wufeng, Peng 924. CHIAYI: Alishan, Hsu & Hsu 3909. HUALIEN: Shimizu & Kuo 10683