生活型

tree

形態特徵

• Evergreen trees; twigs gray-violet, terete, young twigs ridged below petioles, glabrous, gray; terminal buds subulate, glabrous, apex acute to caudate, often curved, 5–8 mm long.
• Leaves: Leaf blades narrowly elliptic or narrowly oblong, 6–9 mm long, (1–)1.5–3 cm wide, apex caudate with apiculate tip, base attenuate, margins slightly recurved, crenate-serrate with teeth, teeth 2–4 mm apart, usually entire near base, both surfaces glabrous, midrib impressed on upper surface, prominent on lower surface, nerves 8–14 pairs, slightly prominent on lower surface, reticulation coarse, petiole glabrous, 5–12 mm long.
• Inflorescences axillary, a short-pedicelled simple racemes, (5–)10- to 30-flowered, (1–)2–5 cm long, axis and pedicels densely puberulent, pedicels 0–2 mm long, bracts orbicular to ovate, 1.5–2.5 mm long, caducous, glabrous except base and ciliate margin, apex acute, bracteoles 2, caducous, 1–2 mm long, glabrous except base and on midrib outside and ciliate margin. Calyx tube glabrous, 1.5–2 mm long, limb ca. 1 mm long, lobes imbricate ovate, obtuse at apex, glabrous except on ciliate margin; corolla white, 4.5–6 mm long, deeply 5-lobed, lobes elliptic; stamens 25–35; disc glabrous, annular to pulvinate; style glabrous, 3–4 mm long.
• Fruits narrowly ellipsoid, 5–7 mm long, 2–3 mm in diam., crowned by persistent calyx lobes, stone ellipsoid, smooth, seed 1, straight, with straight embryo.
• The closest ally of this species is S.prunifolia in Japan, which has much larger bracts.

分布

• 台灣 : 1,000–2,600 m altitude.
• 世界 : S. China and Indo-Indochina.

引證標本

TAIPEI: Mt. Ayi, Urai, Yii et al. s. n.; Babo Taboku, Taranan, Bunzan-gun, 1460 m, Suzuki ST17926. HSINCHU: Chutong, Fukuyama 3009; Chungtung logging station, Liu et al. 1448; Mt. Yura, Sasaki s. n. MIAOLI: Tapachien-shen, 2500 m, Liau 215. TAICHUNG: Lishan, Kao 4606; Anmashan, 2300 m, Liu et al. s. n.; Mt. Tashe-shan, Wang s. n.; Pahsienshan, Suzuki 194. NANTOU: Alishan, Sato 178; Baibara, Saito s. n. KAOHSIUNG: Santeimon, Chimoto, Sasaki s. n. PINGTUNG: Buizan, Matuda s. n. ILAN: Chilanshan, Kuo 8195. HUALIEN: Pilu, Pilichi, 1500 m, Lu 23905. TAITUNG: Mt. Seikoo, 3500 Yamamoto 2305, 2308; Chinshuiying, 1200–1450 m, Simizu 3671, 3815.

參考文獻

• NAGAMASU, Hidetoshi, Flora of Taiwan, second edition 4: 114. 1998.  (Fl. Taiwan 2nd edit.)