生活型

herb

形態特徵

• Creeping annual, stems weak, branched, glabrous, rooting at basal nodes; stipules minute, narrowly deltoid, hyaline, 0.5-0.8 mm long.
• leaves broadly ovate, opposite, blade 1-4 mm long, 1-4 mm wide, adaxially sparsely pubescent, abaxially glabrous, apex obtuse to acute, base shallowly cordate to truncate, attenuate into a narrowly winged petiole.
• flowers solitary, axillary, pedicel slender, to 2 cm long, calyx cup 4-lobed, lobes oblong to deltoid-ovate, apex obtuse, 0.5-1 mm long, margin ciliate; corolla subsalverform, 1.5-3.5 mm long, 4-lobed, lobes white, ovate, apex obtuse to acute, tube 0.6-1.5 mm long, pale yellow inside, throat glabrous; stamens 4, adnate to throat between corolla lobes, exserted, filaments to 0.5 mm long, anthers ellipsoid, 0.1-0.15 mm long; pistil 1, stigma bifid, ca. 1 mm long, placentation axile; capsule depressed obovoid, 1-2 mm long, 0.5-1 mm wide, apex retuse or truncate, dehiscing loculicidally.
• seeds ca. 20-35 per capsule, depressed ellipsoid, 0.3-0.5 mm long, 0.2-0.4 mm wide.

引證標本

Taipei City, Campus of Academic Sinica, 5 Nov 2005, C.-I Peng 20699 (HAST), Campus of National Taiwan University, 10 Jan 1992, F. Lomer s. n. (TAI), 9 Feb 2010, M.-J. Jung 4725 (TNU), Campus of Taipei Botanical Garden, 8 2010, M.-J. Jung 4725 (TNU), Campus of Taipei Botanical Garden, 8 Feb 2010, M.-J. Jung 4724 (TNU); Kaohsiung Co., Gangshan Township, Campus of National Kangshan Agricultural and Industrial Vocational Senior High School, 13 Mar 2010, C.-C. Huang s. n. (TNU).

參考文獻

• Ming-Jer Jung, Shin-Ming Ku and Ching-I Peng, Taiwania 56(1): 58-61. 2011.