生活型

tree

形態特徵

• Small deciduous trees, bark dark brown; branchlets velutinous.
• Leaves chartaceous, rhombic, rhombic-ovate, or rhombic-obovate, 5–11 cm long, 2–6 cm wide, acuminate or caudate at apex, acute or cuneate at base, lateral veins 6 or 7 pairs; petioles 4–6 mm long, pubescent.
• Male inflorescences spike-like with 2–5 flowers borne on lower part of new branchlets, or sometimes solitary or clustered in axils of leaves, basipetally blooming; male flowers 4-merous; calyx ca. 1.8 mm long, pubescent, lobes ovate, ca. 1.3 mm long, acute at apex; corolla yellowish white, urn-like, ca. 4.2 mm long, pubescent inside and out, lobes broadly ovate, ca. 1.1 mm long, 1.7 mm broad; stamens ca. 16 in 2 series, 3 mm long, anthers ca. 2 mm long, filaments ca. 1 mm long, pubescent. Female flowers solitary, axillary, sometimes 1 or 2 on lower part of young branchlets, 4-merous; calyx ca. 8.5 mm long, lobes elliptic, 8 mm long, 3.8 mm broad, obtuse to rounded at apex, without staminodes; corolla yellowish-white, urn-like, ca. 5.5 mm long, densely pubescent outside, lobes ovate, ca. 2 mm long, ca. 1.2 mm broad, obtuse to rounded at apex; ovary ovoid, ca. 2.5 mm long, pubescent; style ca. 1.5 mm long, pubescent.

分布

• 台灣 : in forests in mountains at about 1,000 m in the central part.
• 世界 : Mainland China.

引證標本

TAICHUNG: Tungmaoshan, Lu s. n. 1986.

參考文獻

• LI, Hui-Lin, LU, Sheng-You and YANG, Yuen-Po, Flora of Taiwan, second edition 4: 92. 1989.  (Fl. Taiwan 2nd edit.)