生活型

tree

形態特徵

• Small tree; branchlets glabrous, thorns usually slender and short.
• Leaves broadly ovate to broadly elliptic, 7–12 cm long, 4–7 cm broad, subcoriaceous, obtuse at apex, cuneate or obtuse at base, the margins subentire or slightly crenulate, the lateral veins about 7 on each side of the midrib; petioles 2–3 cm long, broadly winged, the wings triangular obovate, 2–2.5 cm broad, usually truncate at apex.
• Flowers white, solitary or 2–3 in fascicles; calyx cupular, the lobes broadly ovate-triangular, glabrous, or sometimes pubescent; petals 4–5, oblong white, 1.5 cm long, about 4 mm broad, obtuse at apex; stamens numerous, in 4–5 phalanges, the filaments glabrous, 6–10 mm long, the anthers oblong; ovary glabrous.
• Fruit depressed, globose, 5–7 cm across, yellow-orange, thick-walled, the segments 8–12, pulp very acid, slightly bitter.

分布

• 台灣 : found on Is. Lanyu only.
• 世界 : Southeastern Asia.

引證標本

TAITUNG: Is. Lanyu, Chang 17435.

引用文獻

• CHANG, CHING-EN and HARTLEY, TOM G., Flora of Taiwan, second edition 3: 513. 1993.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)