生活型

tree

形態特徵

• Deciduous trees to 12-25 m high; bud scales with dense brown hairs.
• Leaves 40-50 cm long, brown pubescent on rachis; petioles 15-23 cm long, brown pubescent; leaflets 9-17, sessile or subsessile, chartaceous, ovate-elliptic or long-ovate, 8-15 cm long, 3-7.5 cm wide, acute or acuminate at apex, obliquely rounded or cordate at base, margins serrate, somewhat pubescent on veins of upper surface, densely pubescent on lower surface, lateral veins 11-17 pairs.
• Staminate inflorescence 18-25 cm long, sparsely pubescent on rachis; staminate flowers glandular; stamens ca. 13, anthers ca. 1 mm long, pubescent. Pistillate inflorescence 8-15 cm long, brown pubescent; pistillate flowers with dense brown glands; ovary ovoid.
• Fruit ovoid or ovate-globose, 3-5 cm long; pericarp brown glandular; nut 6-8-ridged.

分布

• 台灣 : in forests from 1,200 to 2,000 m throughout of the island.
• 世界 : South China.

引證標本

TAOYUAN: Litungshan, Kawakami 1913. HSINCHU: Sintikusyu, Suzuki 20681. NANTOU: Shuili, Liao et al. 12731; CHIAYI: Alishan to Hoshe, Tamura et al. 22272. TAICHUNG: Techi, Kao 10674; Wu-ling Farm, Wang 4322. TAITUNG: Peinan, Kawakami & Mori 1830.

引用文獻

• YANG, YUEN-PO and LU, SHENG-YOU, Flora of Taiwan, second edition 2: 25. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)