Plant of the month February, 2005
Eng (thai)



Citrus halimii B.C. Stone in Biotropica, 5(2): 106. 1973.

Description: Habit medium sized tree to 25 m tall, 60 cm diameter; young branches in sapling spiny.  Leaves unifoliolate, elliptic or slightly ovate, 8-15 x 3.5-7.5 cm; apex acute to shortly acuminate and emarginate; margin subcrenulate; secondary veins 7-11 pairs; petioles 1-2 cm long, narrowly winged or wingless.  Inflorescences solitary, Flowers 5-merous; pedicels 1-3.5 mm long; petals white, fragrant; stamens 18-20; ovary (6-)9-10 carpellate, ovules 1-3(-5) per locule; style columnar; stigma flat.  Fruits subglobose to slightly pyriform, 5-7 cm in diameter, green, turning deep yellow when ripe, smooth or bumpy; pericarp ca 6 mm thick; pulp-vesicles pale greenish to yellowish, juicy. Seeds numerous, to ca 2 cm long.



Distribution: Scattered in Malay Peninsula, Borneo, and Peninsular Thailand. In Thailand recorded from Nakhon Si Thammarat and Yala (Than To, Betong). Restricted on hillsides and mountain ridges, evergreen forest; 900-1800 m.

Uses:  Fruits are edible.

Contributors:  Manop Poopath

Thai name: Som chit tai (ส้มจี๊ดใต้).

Photos: R. Pooma (Khao Chalongchai, Thanto, Yala).

References: Jones, D.T. 1995. Jones, D.T. 1995. Rutaceae. In Soepadmo, E. and K.M. Wong, Tree Flora of Sabah and Sarawak Vol. 1: 351-419.