Polygonum perfoliatum

扛板歸

Polygonum perfoliatum L.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

L., Systema Naturae, Editio Decima 2: 1006. 1759. (Syst. Nat. (ed. 10))

Forbes & Hemsl., The journal of the Linnean Society of London. Botany 26: 344. 1891. (J. Linn. Soc., Bot.)

無

Ciou & Pong, Illustrations of Hakka ethnobotany of Taiwan 82. 2008. (Illustration of Hakka ethnobotany of Taiwan)
Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)

herb

Annual climbing or twining herb; stems much branched, angled, armed with recurved prickles.
Leaves deltoid, peltate, 2–7 cm long, 2.5–6 cm wide, apex acute, base truncate, upper margins retrorsely prickly, both surfaces glabrous, beneath veins retrorsely prickly; petioles 3–7 cm long; ocreae foliaceous, green, glabrous, upper margins eciliate.
Inflorescences 2–3-flowered fascicles in spike-like racemes, terminal or in axils of upper leaves, unbranched, densely flowered, 3–5 cm long; peduncles retrorsely prickly, 2–4 cm long; bracts elliptic, glabrous, apex acute, upper margins eciliate. Flowers greenish-white; pedicels included; perianth-segments 5, elliptic, 2–3 mm long, apex obtuse, becoming fleshy and blue in fruit; stamens 8; styles deeply 3-cleft, included; nectaries present.
Achenes black, spherical, smooth, shining, ca. 3 mm long.

台灣 : in sunny fields, roadsides, throughout the island.
世界 : India, The Himalayas, China (except NW & Xizang), Indochina, Indonesia, Malaysia, the Philippines, Korea, the Ryukyus, Japan, Russian Far East and North America.