Ipomoea wrightii
槭葉小牽牛
naturalized
Ipomoea wrightii A. Gray
名彙資訊
特徵描述
典藏標本
數位照片
分布位置
相關資訊
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名彙資訊
學名發表文獻
A. Gray, Synoptical Flora of North America 2(1): 213. 1878. (Syn. Fl. N. Amer.)
台灣首次記錄發表文獻
Chen, Quarterly journal of Chinese forestry 20(1): 110. fig. 2. 1987. (Quart. J. Chin. For., 中華林學季刊)
異名
無
各語言俗名
無
參考資料
特徵描述
生活型
twiner
形態特徵
- Perennial twiners, stem slender, trailing and twining, herbaceous, glabrous.
- Leaves pedately compound, leaflets usually 5, lanceolate or linear-lanceolate, sessile, acute, 3–6 cm long, 1–3 cm wide, entire, glabrous; petiole ca. 8 cm long.
- Flowers on filiform, spirally coiled peduncle, these rarely straight and not coiled, ca. 2–2.5 cm long, usually 1-flowered; pedicel 7–10 mm long, bracts at base 2; sepals ovate, 5–7 mm long, obtuse or rounded; corollas lavender or purplish, 1.5–2 cm long, campanulate-funnelform, glabrous, limb 2 cm broad; stamens white, unequal, filaments of long stamens white, 1 cm long, lower half white-hairy, filaments of short stamens 7 mm long, glabrous; pistils white, 1 cm long, stigma 2-lobed, 1 mm wide; ovary 1.5 mm long.
- Capsule globose to ovoid, 8–10 mm long, glabrous; seeds often 4, finely pubescent.
分布
- 台灣 : only in the eastern region; roadsides and other disturbed sites.
- 世界 : Mexico, U.S.A. (southern Texas).
引證標本
TAICHUNG: Datushan, K. C. Lu & C. H. Ou 4651. HUALIEN: Hualien-kankou, Chen 3634, 3680.