生活型

herb

形態特徵

• An annual, erect herb, up to about 1 m high.
• Leaves ovate or ovate-elliptic, the apex obtuse, the base obtuse or rounded, 2–5 cm long, 1–3 cm broad, the margins irregularly serrate, 5-nerved, with appressed hairs on both surfaces, particularly along the veins; stipules linear or lanceolate, hirsute; petioles 1–2.5 cm long, slender, hirsute.
• Flowers axillary, solitary, the pedicels about 3 mm long; epicalyx-segments linear, 5–7 mm long, 0.8 mm broad; sepals ovate, acuminate, with stellate hairs; petals yellow, obovate, about 7 mm long, 3 mm broad, the apex rounded.
• Fruit about 6 mm broad, the carpels somewhat pilose, 8–12, each with 2 spines on the dorsal side, near the middle of the carpel. Seeds reniform.

分布

• 台灣 : Found at low altitudes throughout the island.
• 世界 : A native of tropical and subtropical America, now widely naturalized throughout the Tropics.

引證標本

TAIPEI: Shihpai, Chao 4325. MIAOLI: Waipu, Hsu 6391. NANTOU: Puli, Hsu 4635. KAOHSIUNG: Liukuei, Hsu 5059. PENGHU: Penghu, Huang & Kao 6846. PINGTUNG: Hengchun, Matuda 1294*. Is. Liukiusyu, Hosokawa 1911a*; Mutan, Cheng 1469. TAlTUNG: Is. Lanyu, Hsu 4922.

參考文獻

• CHANG, CHING-EN abutilon by YANG, ALECK TSUNG-YU, Flora of Taiwan, second edition 3: 745-746. .  (Fl. Taiwan 2nd edit.)