生活型

tree

形態特徵

• Large shrubs, to 4 m tall. Branches as brown, branchlets puberulous, later glabrate.
• Leaf blades oblong-lanceolate, 6-11 cm long, 1.8-2.6 cm wide, apex acute to obtuse, base obtuse-rounded, entire, lateral veins 11-14 pairs; immature leaf blade sparsely villose above, densely so beneath with white hairs sometimes intermixed with brown hairs; mature leaf blades glabrate above, thinly villose beneath; veinlets homogenous; petioles 1.0-1.4 cm long; stipules ovate, 0.8-1.2 mm long, margins glandular.
• Aments coetaneous, peduncle with 2-5 green leafy bracts; male ament slender, 2.4-3.0(3.6) cm long, 0.5-0.7 cm wide, long villose, later glabrate; stamens 2, filaments 2-4 mm long, base pubescent, to 1/3-1/2 length, anthers elliptic to globose; nectaries 2, one adaxial, large, square, the other small, slender bat-like; bract oblong, 1.3-1.9 mm long, 0.8-1 mm wide, glabrous on adaxial side, long villose on abaxial side, becoming glabrate, margin loosely villose; female ament slender 2.4-3.5 cm long, 4-6 mm wide; pistils pubescent, pyriform, style as long as stigma, stigma double bifid, stipes ca. 1-1.5 mm long; nectary 1, adaxial, square, sometimes pubescent; bract same as in male flowers; ovules 6-10 per ovary.
• Capsules long pyriform, 5-6 mm long.Seeds green, short bat-like 1-2 mm long, coma.

分布

• 台灣 : Endemic. In open areas in mountains, at 1,600-2,700 m throughout the island, not common except in Alishan region.

引證標本

ILAN: Taipingshan-Tsuifeng Lake, Yang 3085. TAICHUNG: Hsuehsan-tungfong, Yang 3402. NANTOU: Kuankao, Yang 2992; Chushan, Doi s. n. 1912 (Type of S. doii, TAIF!). CHIAYI: Alishan-Menyueh, Yang 2823*; Alishan-Chuoshan, Yang 2807; Alishan-Tzuchung, Yang 2809; Hsiukuluanchi, Mori s. n. 1910 (Type of S. Morii, TAIF!). KAOHSIUNG: Takuanshan, Yang 2908*.

引用文獻

• YANG, KUOH-CHENG and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 30. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)