Citrus halimii

Citrus halimii
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Sapindales
Family: Rutaceae
Genus: Citrus
Species: C. halimii
Binomial name
Citrus halimii

Citrus halimii or Mountain citron is a sour fruit variety belonging to the papeda subgroup of citrus plants, not related to the true citron. It was first discovered and catalogued in 1973.[2]


Citrus halimii is quite rare and poorly studied. After its initial 1973 discovery and description, it has only been observed in a handful of locations scattered across Southeast Asia: Thailand and Malaysia (the locations of the first discoveries), along with isolated stands in Indonesia.[2]


Citrus halimii is a midsized evergreen tree, with a mature height of 20 to 25 feet; it is somewhat less thorny than other citrus. Like other members of the papeda sub-group, the halimii has relatively large leaves, with a long, winged petiole.[2]

The fruits of C. halimii are edible, but sour. They are round and small, measuring about 5–7 cm in diameter. The rather thick rind eventually ripens to yellow or orange-yellow; internally the rind is tightly bound to the flesh. The yellow-green segments are filled with a number of large seeds, and a small quantity of juice.[2]


  1. The binomial was originally published at: Stone, B.C.; Lowry, J.B.; Scora, R.W.; Jong, K. (1973). "Citrus halimii : A new Species from Malaya and Peninsular Thailand". Biotropica. 5 (2): 102–110. doi:10.2307/2989659.
  2. 1 2 3 4 5 "Citrus halimii". Plant of the month. Bangkok, Thailand: Office of the Forest Herbarium : Department of National Parks, Wildlife and Plant Conservation. February 2005. Retrieved November 24, 2009.
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