生活型

tree

形態特徵

• Evergreen trees to ca. 22 m high, trunks to 1 m across; bark tea-brown; branchlets grayish-black.
• Leaves oblong to somewhat obovate, 7–10.8 cm long, 2.9–3.7 cm wide, acuminate at apex, obtuse at base, serrate from middle toward apex along margins, coriaceous, glabrous, lustrous and puberulent beneath when young, midrib furrowed above, elevated beneath, lateral veins 8–12 pairs; petioles 2–2.7 cm long.
• Staminate flowers in catkins or spikes, 2–3.5 mm long, 1.5–2.5 mm across; perianth 5–6-lobed, hairy outside; stamens 5–7 (4–9), filaments 2 mm long, anthers 0.9 mm long. Pistillate flowers with ovary 3-celled, styles 3, stigmas enlarged.
• Cupules cup-shaped, 1–1.7 cm long, 1.6–1.9 cm across, sericeous-tomentose, with scales in 7–10 concentric rings; nuts globose to ellipsoid, 1.8–2.2 cm long, 1.5–1.7 cm across.

物候

Staminate flowers blooming in April; fruits maturing from October to November.

分布

• 台灣 : occurring between 1,600 and 2,400 m altitude throughout the central mountains of the island, often forming pure stands.

引證標本

ILAN: Taipingshan, Suzuki 36106. HSINCHU: Kuaishan, Liu s. n. TAICHUNG: Anmashan, Liu et al. 36579; Tachen, Matuda 7596. NANTOU: Luantashan, Nakai 7595. CHIAYI: Mt. Alishan, Suzuki 18140. TAITUNG: Kueifu, Kuo 2336, 2343, 2379; Tawu, Furukawa 7601. HUALIEN: Tayuling, Yang 46.

參考文獻

• LIAO, JIH-CHING, Flora of Taiwan, second edition 2: 78. 1996.  (Fl. Taiwan 2nd edit.)