生活型

herb

形態特徵

• Erect or procumbent herbs, covered with septate hairs.
• Leaves elliptic, base cuneate, apex obtuse or rounded, margins coarsely serrate to sinuate, petioles 2–4 cm long.
• Flowers verticillate, axillary, sessile or subsessile; calyx campanulate, puberulent, 5-toothed; corolla bluish white or pink, 6–8 mm long; pollen grains tricolpate, prolate-spheroidal, 25×20 m, tectum perforate, exine rugulate to reticulate.
• Nutlets 1.8–2.0 mm.
• Chromosome number 2n = 64.

分布

• 台灣 : grows in sand in open, waste places in Taipei City and Taipei County.
• 世界 : the N. Ryukyus, C. to S. China and Vietnam.

引證標本

TAIPEI: Talungtung, Kawakamii s. n. 1907 (Type, TAIF!); Chihtsu, Lin s. n. 1985; Pali, Hsieh 882; Taihokushi, Tanaka & Shimada 43547*.

參考文獻

• HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang, Flora of Taiwan, second edition 4: 438. 1998.  (Fl. Taiwan 2nd edit.)