生活型

herb

形態特徵

• Perennial or annual herbs; stems prostrate or ascending.
• Leaves subequally or unequally paired, membranaceous, with conical trichomes above and along nerves beneath, ovate to rhombic-ovate, 1.0-4.0 cm long, 0.8-2.2 cm wide, apex acuminate, with an entire and ciliolate acumine, margins serrate, base obliquely cuneate or cuneate, 3-nerved; petioles 0.4-2.8 cm long; stipules 2, free, with a few purplish-red spots, oblong, to 5 mm long, 2 mm wide, without middle nerve.
• Inflorescences axillary, in cymose-paniculate glomerules, to 2.7 cm long; bracts free, broadly triangular, minute; peduncles to 2.0 cm long. Male flowers obovoid; sepals 5, membranaceous, entire, connate at base, obovate-cymbiform; pedicels to 0.6 mm long; stamens 5; pistillodes compressed-rhombic-ovoid. Female flowers with 5 sepals; sepals connate at base, subequal, cymbiform, acute at apex; staminodes 5; ovary oblique ellipsoid; pedicels ca. 1.2 mm long.
• Achenes laterally compressed, slightly obliquely ovoid.

物候

Flowering and fruiting April to July.

分布

• 台灣 : at low to medium altitudes in the eastern and southern parts, in ravines or along moist roadsides of shade places.
• 世界 : Japan, Russia, Korea, mainland China.

引證標本

KAOHSIUNG: Chishangun, Suzuki 20819. TAITUNG: Hsiayeh, Shih 3414; South Cross Highway, Shih 2661.

引用文獻

• YANG, YUEN-PO, SHIH, BING-LING and LIU, HO-YIH, Flora of Taiwan, second edition 2: 239. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)