生活型

herb

形態特徵

• Perennial herb; stem ascending, glabrous; stipules ovate-deltoid to ovate, 1 to 2 mm long, incised at margin, sericeous adaxially.
• Leaves subcoriaceous, ovate, 10–18 mm long, 6–13 mm wide, acute at apex, obliquely cordate at base, entire at margin, glabrous on both surfaces; petioles 1–1.8 mm long, glabrous.
• Cyathia in cymes with leaf-like bracts; involucres turbinate, 1.2–1.8 mm long, glabrous outside, velutinous inside, stalks 0.5–4 mm long; glands 4, yellow, rounded to transversely elliptic, ca. 0.2 mm long; appendages white, obovate to reniform, entire, 0.5-0.9 mm long, 0.3-0.7 mm wide; bracteoles linear, laciniate-lacerate at margin. Male flowers 15–20, anthers yellow. Female flower with glabrous pedicel and ovary, style and stigma 0.4-0.6 mm long.
• Capsules to 2.5 mm long, 2.5 mm diam., exserted, nutant, glabrous, the pedicels to 4 mm long; seeds grayish to brownish, tetragonal, oblong-ovoid, smooth or slightly rugulose, to 1.3 mm long, 1 mm diam.

分布

• 台灣 : Locally it has been collected only in Is. Lanyu, and is commonly found in coral reefs along the coastal areas.
• 世界 : Eastern India, Australia and the Ryukyu Islands.

引證標本

TAITUNG: Is. Lanyu: Hungtou, Huang 2725; Lungmen, Lin 786.

參考文獻

• HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 445. .  (Fl. Taiwan 2nd edit.)