生活型

tree

形態特徵

• An evergreen tree.
• Leaves irregularly whorled, chartaceous, oblong, lanceolate to oblanceolate, the apex shortly acuminate, with obtuse acumen, the base cuneate or obtuse, 8–13 cm long, 3–6 cm broad, tubercled beneath, the margins crenulate-serrulate towards the upper part, the lateral veins 6–8 on each side of the midrib, arcuate-ascending, the veinlets reticulate; petioles 1.2–2 cm long, glabrous.
• Inflorescences racemose, axillary or above the scar of the fallen leaves, 4–6 cm long; pedicels 3–6 mm long, slender, pubescent; flower-buds ovate, 4 mm long; sepals 5, lanceolate, 5–6 mm long, 1.5–2 mm broad, acute at the apex, depressed pubescent outside; petals 5, cut about half way down into numerous laciniae, 6–7 mm long, about 2.5 mm broad, slightly pubescent at base; stamens about 28, the anthers linear, 3 mm long, puberulent, with hair-tuft at apex, the outer valves slightly longer than inner ones, acute; ovary ovoid, villous, 4–5-celled, the style about 3 mm long.
• Fruit subglobose, about 2 cm long, 1.5 cm across, the stone strongly tuberculate, very hard.
• E. hayatae and E. sphaericus are similar to each other in having chartaceous leaves, anthers with hair-tuft at the top, subglobose fruits and other characters. The difference between the two is that in the former there is no pubescence on the stems, petioles and underside of leaves. Kanehira and Sasaki (1934) noted in the original description that the ovary of E. hayatae is 3-celled. However, in examining type specimens, it is found that the ovary and fruit are 4–5-celled.

分布

• 台灣 : Variety endemic to Is. Lanyu (Botel Tobago).
• 世界 : The species from India to Burma, Thailand and Hainan, southward and eastward through Malaysia to the Philippines, Java, the Moluccas, and New Guinea;

引證標本

TAITUNG: Botel Tobago, Sasaki 3350 (Isotype of E. hayatae), Liu et al. 92, Chang 3214.

引用文獻

• CHANG, CHING-EN-, Flora of Taiwan, second edition 3: 718. .  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)