生活型

tree

形態特徵

• Medium-sized evergreen tree to 12 m high, trunks 0.5 cm across; bark grayish-dark brown, furrowed; branches grayish-dark brown; branchlets grayish.
• Leaves somewhat clustered on branchlets, broadly obovate, obovate, long-obovate, elliptic to broadly lanceolate, 6–14 cm long, 1.9–8 cm broad, coriaceous, glabrous in age, glaucous or not beneath, short-acute or acuminate at apex, auriculate at base, serrate, with incurved teeth, lateral veins 11–15 pairs; petioles 0.2–0.6 cm long.
• Staminate catkins 3–4 cm long; staminate flowers 1.5–2 mm long, 2.5 mm broad; perianth 5–6-lobed, very hairy outside, glabrous inside; stamens 3–6, filaments glabrous, anthers 7 mm long, 5 mm broad. Pistillate flowers 2 mm long, 1.5 mm broad (3 mm long, 3 mm broad with the involucre); styles 3, hairy, stigmas corpulent at top; ovary imcompletely 3-celled, 1.1–1.3 cm across, apiculate at apex, obtuse at base.
• Cupules with imbricate scales;nuts ovoid, 1.8–2.3 cm long, 1–1.2 cm across, hairy.
• Usually growing with Pinus taiwanensis, Pinus morrisonicola, Pistacia chinensis, Rhus succedanea, Rhus sylvestris, Liquidambar formosana, Cyclobalanopsis glauca, Quercus variabilis and Rhododendron breviperulatum etc.

分布

• 台灣 : in forests at altitudes of 650–1,600 m in the central part of the island (Mts. Salien and Tongmao near Paileng, Lileng, Poai, Chiuliangsei and Kukuan in Taichung County).
• 世界 : Widely distributed in mainland China (from south to north), Korea and Japan.

引證標本

TAICHUNG: Poai, Kukuan, Liao 11212 & 11213.

參考文獻

• LIAO, JIH-CHING, Flora of Taiwan, second edition 2: 115. 1996.  (Fl. Taiwan 2nd edit.)