Polygonum thunbergii

戟葉蓼

Polygonum thunbergii Sieb. & Zucc.

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

Sieb. & Zucc., Fl. Jap. Fam. Nat. II. 4(3): 208. 1846.

台灣首次記錄發表文獻

Forbes & Hemsl., The journal of the Linnean Society of London. Botany 26: 351. 1891. (J. Linn. Soc., Bot.)

異名

Polygonum biconvexum Hayata

Hayata, Flora Montana Formosae 184. 1908. (Fl. Mont. Formos.)
Persicaria thunbergii Nakai var. typica (Franch. & Savat.) Ohki

Ohki, The Botanical magazine, Tokyo 40: 56. 1926. (Bot. Mag. Tokyo)
Polygonum thumbergii Sieb. & Zucc. var. biconvexum (Hayata) K. S. Hsu

K. S. Hsu, Polyg. Taiwan 40. 1965.
Polygonum thunbergii Sieb. & Zucc. f. biconvexum (Hayata) Liu, Ying & Lai

Liu, Ying & Lai, Flora of Taiwan 2: 284. pl. 297. 1976. (Fl. Taiwan)

各語言俗名

中

鹿蹄草. 苦蕎麥. 水犁壁. 台灣水犁壁. 水犁壁草.
英

Thunberg's fleece flower.
日

みぞそば.
台

Chùi iôe piah chháu.

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

Decumbent to ascending herbs, to 100 cm tall, throughout loosely to moderately stellate-pubescent; stems much branched, angled, arms with recurved prickles.
Leaves hastate, 2–7 cm long, 2–5.5 cm wide, apex acute to acuminate, base truncate to weakly hastate, both surfaces strigose, middle lobe broadly elliptic, basal lobes smaller than the middle lobe and with apex acute; petioles 1–4 cm long; ocreae tubular, green, strigose, upper margins often expanded, ciliate.
Inflorescences 1–3-flowered fascicles in head-like panicles, terminal or in axils of upper leaves; peduncles glandular pubescent, 1–6 cm long; bracts lanceolate to elliptic, pilose, apex acuminate, upper margins ciliate. Flowers whitish with pink tinge at the perianth-segment tip; pedicels included; perianth segments 5, elliptic, 3–4 mm long, apex obtuse; stamens 8; styles 2–3-cleft, included; nectaries present.
Achenes greenish-brown to dark brown, trigonous or biconvex, smooth, shining, 2–2.5 mm long.

分布

台灣 : at altitudes of 1,500–2,500 m, in partially shady, wet places, stream bank thickets, and along roadsides.
世界 : Russian Far East, China (S, SW, C, N, E & NE), Korea, Japan and the Ryukyus.

引證標本

ILAN: Nanshan, Hsu 5807; Chihtuan, Kuo 8738. NANTOU: Fonghuangshan, Kuo 10342. TAICHUNG: Shunkuan, Huang & Hsieh 7321. CHIAYI: Alishan, Kuo 80299. TAITUNG: Chihpenwunchien, Hsu & Kao 3293.