Wedelia biflora

雙花蟛蜞菊

Wedelia biflora (L.) DC.

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

DC., Contributions to the Botany of India 18. 1834. (Contr. Bot. India)

台灣首次記錄發表文獻

Hayata, The Journal of the College of Science, Imperial University of Tokyo, Japan 18(8): 19. 1904. (J. Coll. Sci. Univ. Tokyo)

異名

無

各語言俗名

中

大蟛蜞菊.
英

Twinflower wedelia.
日

きだちはまぐるま.

參考文獻

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)

特徵描述

生活型

shrub

形態特徵

Subshrubs; stems elongate, branched, scandent, coarsely appressed-strigose.
Cauline leaves thick chartaceous, long-petiolate, ovate, 7–14×3–8 cm, acuminate at apex, rounded at base, margins much-toothed, appressed-strigose on both surfaces; petioles 12–23 mm long.
Heads 3–6, terminal, 2–3 cm wide, peduncles 1.5–5.5 cm, slender; involucre 10–13×5–7 mm, bracts in 1 series, ovate-lanceolate or narrowly ovate, gradually narrowed to tip, densely appressed-strigose. Ray florets yellow, in one row; corolla 9–13 mm long, 2- or 3-dentate. Disc florets yellow; corolla 5 mm long, apex 5-dentate.
Achenes 3–3.5×2–2.5 mm, cuneate at base, often 3-angled, coarsely strigose toward tip. Pappus bristles 2–2.5 mm long.

分布

台灣 : in littoral regions.
世界 : India to Pacific islands through southeast Asia, south China and Japan.

引證標本

TAIPEI: Tanshui, Chuwei, Peng 4503; Keelungyu, Peng 14100. ILAN: Chuangwei, Peng 7029. TAINAN: Anping, Wang 7832. PINGTUNG: Chialoshui, Peng 7162. TAITUNG: Lanyu Is., Peng 7208; Taimali, Chen 505. HUALIEN: Takeng, Peng 7366.