生活型

herb

形態特徵

• Erect, much-branched, glabrous annual herb with tuberous tap-root; stems thickened on nodes.
• Leaves opposite, ovate-triangular, 3-15 cm long, 2-9 cm wide, acute, rounded or slightly cordate at base.
• Flowers with very short pedicels, crowded; involucre 5-fid, the segments ovate, acute; perianth-tube 4-5 cm long, constricted above globose base, gradually widened toward apex, purple, red, white or variegated; stamens 5, exserted.
• Fruit black, ribbed and plicated, about 8 mm across.

分布

• 台灣 : commonly cultivated and locally as an escape in Taiwan.
• 世界 : Probably introduced from tropical America.

引證標本

TAIPEI: Hsieh s. n. Oct. 12, 1923; Kawakami & Shimada s. n. Oct. 1910.

參考文獻

• TANG-SHUI LIU, Flora of Taiwan 2: 299. 1976.  (Fl. Taiwan)