生活型

tree

形態特徵

• Trees, to 60 cm in diameter; branches glabrous, stout.
• Leaves coriaceous, narrowly oblong or elliptic, (7–)10(–5) cm long, 2.5(–3.5) cm wide, glabrous, margins very shallowly crenate, revolute, lower surface with numerous blackish glands, apex acute, base attenuate, midrib impressed; petioles (1–)2–3 cm long.
• Flowers solitary, axillary, usually 5–8 aggregated at the apex of branchlet to assume a corymbose inflorescence; pedicels (1.5–)2.5(–3) cm long, downward-bending, compressed, with 2 ridges; subtending bracts caducous, bracteoles 2, persistent, sub-opposite, thick, triangular, 5–6 mm long, 4–5 mm wide; sepals 5, fleshy, imbricate, triangular-ovate, 1–1.5 cm long, 8–10 mm wide, apex acute; petals 5, 1.4–1.6 cm long, pinkinsh to reddish, basally connate into a tube, 6 mm long, 1 cm in diameter, abruptly narrowed on each side at the middle, the upper segments obovate, 8–9 mm long; stamens about 35, glabrous, 10–12 mm long, filaments 3–4.5 mm long, anthers basifixed, aristate, projected connective tip 2.5–3 mm long; ovary (2-) 3-celled, nearly inferior; ovules pendulous, 3 per cell, style filiform, 2 mm longer than petals, unequally 3-fid at apex.
• Fruit inferior, baccate, fruit-body 2 cm long, 1.5–1.8 cm in diameter, pericarp ca. 5 mm thick, dehiscing irregularly.Seeds reddish, 0–1 in each cell, , 12 mm long.
• This species has long been treated as a varity of <i>A. fragrans</i> Wall. But <i>A. lanceolata</i> has downward-bending pedicels, whereas <i>A. fragrans</i> has erect pedicels. In addition, pedicels, floral parts, and fruit of <i>A. lanceolata</i> are constantly smaller or shorter than those of <i>A. fragrans</i>. The unpublished molecular data (Tsou) also support that <i>A. lanceolata</i> is different from <i>A. fragrans</i>.

分布

• 台灣 : rare, distributed in broad-leaved forests in the southern Taiwan at altitudes of 350 to 1,000 m.

引證標本

PINGTUNG: Manchou, Tsou 502, 616, 634, 734, Tzeng 1633; Fonshan, Tseng 14; Nanjenshan, Hsu & Kuoh 10258. TAITUNG: Talilishan, Sasaki s. n.; Chinhua to Tawu, Liu & Keng K2870.

參考文獻

• HSIEH, CHANG-FU, LING, LAI-KUAN and YANG, KUOH-CHENG, Flora of Taiwan, second edition 2: 665. 1996.  (Fl. Taiwan 2nd edit.)