生活型

herb

形態特徵

• An annual fleshy herb; stems slender, erect, simple, dichotomously or rarely trichotomously branched upwards; branches glabrous.
• Leaves alternate, rare opposite, spathulate, 8–27 mm long, 4–11 mm broad, rounded or obtuse at apex, obtuse at base, entire.
• Flowers in cymes, sessile; sepals 5, unequal in length, spathulate, oblanceolate or linear-oblanceolate, 2.5–4.5 mm long, 2–3 mm broad, obtuse or acute at apex, cuneate at base, glabrous, greenish; petals 5, elongate-oblong or lanceolate, 1-nerved, yellow; stamens 10, perigynous; anthers suborbicular or oblong or ovate, 0.4 mm long, subretuse at apex, emarginate at base; glands 5, 0.5 mm long, 0.3 mm broad; carpels 5 (rare 4), connate at base, free upward, suboblong or ovate, 2.5 mm long, acuminate-rostrate at apex, stellate-spreading when mature, 8 mm in diameter, triangular, beak 0.2 mm long.
• Seeds very small, elongate-oblong, 0.8 mm long; embryo elongate-oblong; cotyledons oblong.

物候

Flowering and fruiting periods from February to May.

分布

• 台灣 : On mountains at altitudes from 200 to 2,500 m.

引證標本

TAIPEI: Wulai, Tang 1733. ILAN: Chuntao, Chung 262. KAOHSIUNG: Kuaiku, Lu & Ou 3303. TAITUNG: Chihmou, Chung 287. HUALIEN: Hoping Logging track, Tang 1753*.

參考文獻

• TANG, WEI-SHIN and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 17. 1993.  (Fl. Taiwan 2nd edit.)