Agathis orbicula
Tumuh [Murut]; tubu [Kenyah]; bulok [Iban] (de Laubenfels 1988); Sarawak kauri (Silba 1986).
Tree: Heights to 40 m (Silba 1986).
Bark: Dark brown, exfoliating in irregular plates, with few scattered lenticels; internally granular and reddish-brown; sap produces a yellowish resin (Silba 1986).
Leaves: Oval to circular, obtuse or bluntly acute, closely set, glaucous beneath, 2.4-3.6 × 1.2-2.4 cm, on a short peduncle. Juvenile leaves round, acute, to 6.5 × 2.8 cm, also on a short peduncle (Silba 1986).
Cones: Oval when young, mature dimensions to 7 × 4.5 cm (Silba 1986).
Cone scales: Upper edges of scales imbricate, later elliptic (Silba 1986).
Pollen cones: Ovate or cylindrical, 9-14 × 4-6 mm, on a 2-3 mm long peduncle. Scale apices rounded; exposed parts of microsporophylls 'humpy' (Silba 1986).
Borneo: Sabah, Ulu Moyah; Sarawak: Bumbong Rumah, at 450-1050 m (Silba 1986). Scattered in rainforest and kerangas on low mountains and plateaus (de Laubenfels 1988).
The IUCN reports that this species is facing a high risk of extinction in the wild due to a limited and severely fragmented distribution, coupled with ongoing decline in extent and quality of habitat.
No data as of 2023.02.22.
No data as of 2023.02.22.
No data as of 2023.02.22.
Laubenfels, D. J. de. 1979. The species of Agathis of Borneo. Blumea 25(2):531-542.
The species account at Threatened Conifers of the World.
Last Modified 2023-11-01