Polygonum virginatum var. filiforme

金線草

Polygonum virginatum L. var. filiforme (Thunb. ex Murray) Nakai

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

Nakai, The Botanical magazine, Tokyo 23: 380. 1909. (Bot. Mag. Tokyo)

Hsu, Polyg. Taiwan 32. fig. 36. 1967.

Tovara virginiana Rafin. var. filiformis Steward

Kudo & Masam., Annual report of the Taihoku botanic garden, Faculty of Science and Agriculture, Taihoku Imperial Univeristy , Formosa, Japan 2: 54. 1932. (Ann. Rep. Taihoku Bot. Gard.)
Tovara ryukyuensis Masam.

Masam., Transactions of the Natural History Society of Formosa 29: 60. 1939. (Trans. Nat. Hist. Soc. Formos.)
Polygonum filiforme Thunb.

Yang, Liu & Lu, Manual of Taiwan Vascular Plants 2: 93. 1997. (Manu. Taiwan Vas. Pl.)

herb

Ascending herbs, to 80 cm tall; stems strigose at least on upper portion; nodes enlarged.
Leaves elliptic to obovate, 10–14 cm long, 5.5–7 cm wide, apex acuminate, base cuneate, upper margins ciliate, both surfaces moderately strigose; petioles 0.5–1.5 long; ocreae tubular, 0.5–1 cm long, apex truncate, strigose.
Inflorescences 2–4-flowered fascicles in spike-like panicles, terminal, interrupted, 15–35 cm long; peduncles strigose, 2–5 cm long; bracts oblique funnelform, strigose, apex acute, upper margins ciliate. Flowers pink; pedicels exserted; perianth segments 4, broadly ovate, ca. 3 mm long, apex acute; stamens 5; styles deeply 2-cleft, exserted, persistent, hooked; nectaries present.
Achenes brown, biconvex, smooth, shining, ca. 3 mm long.

台灣 : in woods and thickets, and on shady roadsides at middle and high altitudes.
世界 : SW, S, C & E China, Indochina, the Himalayas, Russia Far East, Korea, Japan and the Ryukyus.