生活型

tree

形態特徵

• Trees, evergreen, up to 15 m high; branchlets pubescent at first, soon glabrous.
• Leaves persistent, oblong-lanceolate, 2.5–13 cm long, 1–4 cm broad, caudate to acuminate at apex, obtuse to cuneate at base, coriaceous, pale green and glabrous above, white-purplish glaucous beneath, densely pubescent when young, 3-nerved at base, nerves slightly raised beneath; petioles 0.7–3.5 cm long, glaucous.
• Flowers small; pedicels short, 1.5–2 mm long; sepals 5, rounded ovate; petals 5, oblong ovate; disk not distinct, hairy appendages abundant; stamens 8. Pistillate flowers 6 mm across; sepals 1.5 mm long, pubescent outside; petals 3 mm long; staminodes short, anthers oblong, 1 mm long, filament shorter; ovary broadly rounded, styles 2, long, recurved downwards. Staminate flowers 4.5 mm across; stamens 1.5 mm long. Inflorescence cymose.
• samara glabrous; each wing with the semicarp 1.5–2.5 cm long; lower edges of two wings spreading at angles of 60–75 degree.

分布

• 台灣 : In forests from low to medium altitudes throughout the island.

引證標本

HSINCHU: Wutzushan, Yang 739. MIAOLI: Tiengo, Huang & Huang 13263. NANTOU: Chiti, Kao 7211. KAOHSIUNG: Sanpin, Kiang & Kao KT457. PINGTUNG: Muhtan, Ou & Kao 9075. HUALIEN: Chimei, Li 3026*; Tienhsiang, Yang 1505.

引用文獻

• LI, HUI-LIN and LO, HANN-CHUNG, Flora of Taiwan, second edition 3: 589. 1993.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)