生活型

shrub

形態特徵

• An undershrub, subcaespitose, nearly prostrate, low, mostly 10–15 cm high, densely hairy; hairs rigid, internodes short; stems greyish-green; stems 2-divergent at 2/3 of height.
• Leaves membranaceous, ovate-elliptic, 1.0–6 cm long, 0.5–3 cm wide, usually oblique, acute at apex, rounded or obtuse at base, sometimes bitailed, serrate, 3-nerved; upper surface green, pubescent; lower surface green, glabrescent; petioles densely hairy, 0.5–1.5 cm long; stipules 2, linear, 0.5 cm long.
• Flowers small, about 4 mm long, oppositifolious, usually 2 in pairs; peduncles very short; pedicels nodate, 1 mm long; bracteoles several, divergent, 1.5–3 mm long; buds green, obovate; sepals 5, glabrous, green, thin, oblong-lanceolate, 4.3–4.5 mm long, 1.3 mm wide, acute at apex, truncate at base, reflexed during anthesis; petals 5, glabrous, yellow, obovate, 4.0–4.5 mm long, 1.9–2.1 mm wide, rounded at apex, cuneate and ciliate at base; gonophore short, stamens 16 or more; filaments slender, glabrous, 2.4–3 mm long; ovary cylindric, 1.9 mm long, 0.9 mm thick, 3–5-celled; styles short, 1.0–1.3 mm long; stigma enlarged, papillate, unlobed.
• Capsules 1.8–2.8 cm long, 0.5-0.8 cm thick, cylindric, prominently longitudinally 6-, 8- or (10)-winged and 3-, 4- or (5)-valved; each valve 2-winged, projecting a beak at apex, both wings meeting at beak and base; beaks erect and slightly dentate, 4–5 mm long; seeds horizontal, longitudinally 1-seriate between 2 valves, separated by obscure partitions, polyhedral, numerous, dark brown.

分布

• 台灣 : Endemic. Growing in rocky, littoral areas where the soil is thin and sterile.

引證標本

Flowering from August to November.

參考文獻

• LIU, TANG-SHUI and LO, HANN-CHIANG, Flora of Taiwan, second edition 3: 725. .  (Fl. Taiwan 2nd edit.)