Dipterocarpus cornutus

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Dipterocarpus cornutus
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Dipterocarpaceae
Genus: Dipterocarpus
Species:
D. cornutus
Binomial name
Dipterocarpus cornutus

Dipterocarpus cornutus is a species of tree in the family Dipterocarpaceae native to peninsular Malaysia, Singapore, Sumatra and Kalimantan. Reaching heights of up to 50 meters tall, it is known for having large leaves. Its flowers are around 4 cm in diameter and of a pale yellow colouration. It drops seeds with green holes in the middle.

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Dipterocarpus fagineus grows as a medium-sized tree up to 45 metres (150 ft) tall, with a trunk diameter of up to 1 metre (3 ft). Bark is greyish brown. The fruits are roundish to ellipsoid, up to 1 cm (0.4 in) long. The specific epithet fagineus is from the Latin meaning "like a beech". Habitat is mixed dipterocarp forest on hills. D. fagineus is found in Sumatra, Peninsular Malaysia and Borneo.

Dipterocarpus kunstleri grows as a canopy tree up to 40 metres (130 ft) tall, with a trunk diameter of up to 1 metre. Bark is orange-brown. Fruit is ellipsoid, up to 5 centimetres (2.0 in) long. Habitat is mixed dipterocarp forest from sea-level to 400 metres (1,300 ft) elevation. D. kunstleri is found in Sumatra, Peninsular Malaysia, Borneo and the Philippines.

Dipterocarpus oblongifolius grows as a tree up to 30 metres (100 ft) tall, with a trunk diameter of up to 1.5 metres. Bark is greyish brown. The fruits are ovoid to spindle-shaped, up to 3 cm (1 in) long. The specific epithet oblongifolius is from the Latin meaning "oblong leaves". Habitat is river banks from sea-level to 400 metres (1,300 ft) elevation. D. oblongifolius is found in Thailand, Peninsular Malaysia and Borneo.

Dipterocarpus rigidus grows as a large tree up to 50 metres (160 ft) tall, with a trunk diameter of up to 1 metre. Bark is rust-brown. The fruits are roundish, up to 5 cm (2 in) in diameter. Habitat is mixed dipterocarp forest on low hills near coasts. D. rigidus is found in Sumatra, Peninsular Malaysia and Borneo.

Dipterocarpus sublamellatus grows as a large tree up to 70 metres (230 ft) tall, with a trunk diameter of up to 3 metres (10 ft). Bark is orange-brown. The fruits are round, up to 3 cm (1 in) in diameter. It is found in a variety of now vulnerable habitats from sea-level to 400 metres (1,300 ft) elevation. D. sublamellatus is native to Sumatra, Peninsular Malaysia and Borneo.

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Lipaso Forest Reserve is a protected forest reserve in Telupid District of Sandakan Division, Sabah, Malaysia. It was designated as a Class 1 Protection Forest by the Sabah Forestry Department in 1984. Its area is 3,606 hectares (36.06 km2). The reserve is mountainous with some palm oil plantations and farms in the surroundings. The forest is mostly mixed dipterocarp. Threats to the reserve forests include fires and encroachment for agriculture.

References

  1. Ashton, P. (1998). "Dipterocarpus cornutus". IUCN Red List of Threatened Species . 1998: e.T33072A9747216. doi: 10.2305/IUCN.UK.1998.RLTS.T33072A9747216.en . Retrieved 12 November 2021.