生活型

tree

形態特徵

• Evergreen trees; twigs gray-brown, terete; young twigs thick, green, glabrous, ridged below petioles; terminal buds obliquely ovoid, rusty tomentose to pubescent; apex acuminate, often slightly curved.
• Leaves coriaceous, narrowly obovate to narrowly oblong, 12–18 cm long, 4–6 cm wide; apex acuminate, base cuneate to shortly attenuate, margins often slightly recurved, glandular-dentate with teeth, teeth 3–5(–6) mm apart, shiny on upper surface, glabrous, midrib impressed on upper surface, very prominent on lower surface, nerves 8–10 pairs, prominent on both surfaces, petiole glabrous, adaxially sulcate, 15–25 mm long.
• Inflorescences axillary, a spikes, usually branched at base, (2.5–)3–5(–6) cm long, axis pubescent, bracts depressed ovate, 1.5–2 mm long, apex obtuse to acute, bracteoles 2, depressed ovate to kidney-shaped, about ca. 1.5 mm long, apex obtuse to acute; both persistent, keeled, adaxially glabrous, abaxially pubescent, margin ciliate. Calyx tube glabrous, 0.5–1 mm lognhigh, lobes imbricate, ovate, 1–1.5 mm long, apex obtuse, abaxially appressed pubescent, margin ciliate; corolla white, ca. 5 mm long, deeply 5-lobed, lobes narrowly elliptic, tube ca. 1 mm long; stamens 60–70, shortly monadelphous to indistinctly pentadelphous; disc annular, later pulvinate, glabrous; style glabrous, ca. 5 mm long, ovary 3-locular, with 4 ovules 4 perin each locule.
• Fruits globose to ampulliform, 5–6 mm in diam., persistent calyx lobes surrounding pulvinate disc ; stones ampulliform, slightly grooved, 4–5 mm long, 4–5 mm in diam.; mesocarp thin, endocarp woody, seed 1, twice curved, with similarly curved embryo.

分布

• 台灣 : 600–2,200 m altitude.
• 世界 : The Ryukyus (Iriomote Is.).

引證標本

TAIPEI: in montibus Kusshaku, Anonymous; Rimogan to Mt. Kueimuh, Keng & Kao s. n.; Peichatienshan, Peng 7422. ILAN: Taipingshan, Suzuki 237; Tayenshan, Kao K3210; Wulai-Ilan, Huang 883. TAOYUAN: from Peitzatenshan (Takaishan) to Shauurai, Minaki et al. 2128; Paling to Lalashan, Lu 12770. HSINCHU: Kwanwu, Huang 117. MIAOLI: W side of Chunghsuehshan, Tateishi et al. 21189. TAICHUNG: Pahsienshan, Liu et al. 425; Anmashan, Kuo 7755. NANTOU: Tungpu-Tuikuan, Hsieh et al. s. n. CHIAYI: Heishana-Jujiro, Hayata s. n.; Alishan, Sasaki s. n. KAOHSIUNG: Qishan, Yamamoto & Mori s. n. HUALIEN: Sakahen-Kirai Tencho no dangai, Nakamura 4968. TAITUNG: In taito-montibus, Yamamoto 1021.

引用文獻

• NAGAMASU, Hidetoshi, Flora of Taiwan, second edition 4: 115. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)