Citrus halimii

The plant belongs to the genus Citrus halimii of citrus plants (Citrus ). It grows as evergreen tree in Southeast Asia, the description was not until 1973. The name pays tribute to the King of Malaysia Sultan Abdul Halim Shah Nuazzam.

Description

Citrus halimii is an evergreen tree, reaching stature heights of 20 to 25 meters with a trunk diameter up to 35 inches. In the closed forest of the trunk is slender and straight, the crown is high on the trunk and consists of quite a few, upward branches. The bark is smooth and gray, yellow inside, the wood is whitish. Neither wood nor bark have an odor. Young twigs are green, spines are present only in young plants.

The leaves are relatively large: 8-15 (20 ) cm long and 4-8 (9 ) inches wide. They are long - oval in shape, upper side smooth and dark green above, lighter. In the leaf blade are numerous (50 per mm ²) oil glands. Between leaf blade and petiole there is a separating tissue, the petiole is somewhat broadened, clearly widened in young plants.

The flowers sit individually in the leaf axils, they are stalked very short. The flower is made up of five fused sepals, five free, white-colored petals, 18-20 stamens and the gynoecium. The stamens are free or fused together at the base of each two or three. The ovary is composed of six to ten carpels, together with one to three ovules.

The roundish fruits measure about 5 inches in diameter. The exterior is shiny, a little uneven and colored yellow when ripe. The exocarp is about 6 millimeters thick and adheres firmly to the white mesocarp. The segments are filled with yellow- green flesh. The seeds are numerous (12 to 18 per fruit ) and 2 centimeters in length quite large. They contain only one embryo, the cotyledons are white.

Dissemination

Citrus halimii is a rare species In the first description in 1973, only about ten localities were known, which originated from Thailand and Malaysia. Meanwhile locations of Borneo are known. The species grows in high altitude 900-1800 meters in undisturbed forests. Most sites are located on granite rock, rarely on limestone.

Documents

  • BC Stone, JB Lowry, RW Scora, K. Jong: Citrus halimii: A New Species from Peninsular Malaya and Thailand. In: Biotropica. Volume 5 No. 2, 1973, pp. 102-110.
  • Citrus halimii as "Plant of the month" of Thailand's " Office of the Forest Herbarium "
  • Rutaceae
  • Rutaceae
Ovary (botany)
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