生活型

herb

形態特徵

• Perennial herbs, prostrate, ascending to erect, up to 50 cm tall. Stems fleshy, terete, 2–5 mm across, green flushed with purplish red, pubescent, becoming glabrous and woody towards the base.
• Leaves somewhat fleshy, opposite, in unequal pairs; blades ovate, ovate-lanceolate to lanceolate or elliptic, (1.5–2.5–)3–5.5 cm long, 1–4 cm wide, obtuse at apex, usually minutely apiculate, truncate, rounded to subcordate at base, margins entire, cartilaginous undulate to slightly lobed, glabrous to distinctly short-ciliate, upper surfaces green, flushed with purplish red, puberulent or subglabrous, lower surfaces pale, pubescent on veins; petioles up to 2.5 cm long, pale flushed with purple, pubescent.
• Inflorescences of pedunculate cymes or pseudoumbels, axillary, or a small terminal panicle, the peduncules 1–8 cm long, 2–4 branched, capillary at apex, green flushed with purplish red, pubescent and glanduar to glabrous, each branch of peduncle subtended by a bract, bracts linear lanceolate, puberulent, 1.5 mm long, caducous. Flowers 3–6, clustered at the apex of peduncle, subsessile; bracteoles usually 2, subtending a flower, in an unequal pair, linear-lanceolate or lanceolate, pale yellow, flushed with purple, puberulent; perianth constricted below the middle, the limb campanulate-tubular 1.5–2 mm long, 2.5 mm across, pink to purple, shallowly 5-lobed, the lobes 1 mm wide, emarginated, with protuberance bearing hairs on the sinus, sparsely puberulent and glandular on the abaxial surfaces; stamens 2, filaments 1.5 mm long, pale pink, anthers dithecal, orbicular, 0.5 mm across, white; style 1.5 mm long, stigma capitate, 0.6 mm across, pale pink.
• Anthocarps ellipsoid to obovoid, 3–3.8 mm long and 2–2.3 mm wide, rounded at apex, 5-ribbed, the ribs green or green flushed with purple, prominently stipitate glandular, the furrows pale, densely stipitate glandular.

物候

Flowering is throughout the year.

分布

• 台灣 : usually in sandy areas near the coast.
• 世界 : A species of Indo-Pacific and Africa origin, probably indigenous in Taiwan. Distributed from Africa eastward to Java, the Ryukyus, Polynesia and Hawaii.

引證標本

ILAN: Nanao to Wuta, Hu s. n. 2002 (NHU). TAINAN: Shuichia, Kao 10630 (TAI). City Park, Tainan City, Peng 7038 (HAST). KAOHSIUNG: Chiching, Kaohsiung City, Chuang & Kao 2985 (HAST); Chingshuiyen, Huang & Huang 12991B (TAI). PINGTUNG: Hsiaoliukiu, Huang 9038 (TAI); Maopitou, Huang et al. 14657 (TAI); Haocha, Liu et al. 763 (HAST). TAITUNG: Hsiaoyehliu, Wang et al. 1188 (HAST); Taipin Farm, Peinan Hsiang, Liu & Su s. n. 2003 (NHU). HUALIEN: Lingting, Chian, Huang et al. 5228 (TAI); mouth of Hualien Hsi, Tseng s. n. 2002 (NHU).

參考文獻

• Shih-Huei Chen and Ming-Jou Wu, Taiwania 52(4): 332-342. 2007.