Castanopsis oviformis
Content
Description
Tree, 15-30 m by 20-45 cm ø;
Branchlets initially with brownish, adpressed stellate indumentum, late glabrescent;
Leaves sometimes tending to distichy, more or less thinly coriaceous, 6-15 by 4-6½ cm (index 2.2-3), widest somewhat below to somewhat above the middle;
Stipules ovate-acute, 3-5 by 2-3 mm.
Fruit solitary, 2-3½ by 1½-2 cm, obo-void-cylindrical, wall ½-1 mm thick, completely adnate to the cupule, rugose, glabrous;
Notes
In ENDERT 3610 from Mt KemuJ in Central East Borneo at 1200 m, the leaves are elliptic, to 11 by 6¼ cm, underneath densely set with both scales and stellate hairs. In S 20139 from Ulu Baram in NE. Sarawak at 1080 m the leaves are elliptic, to 9½ by 6 cm, with some scales and few hairs underneath. These two specimens, both in flower, are suggestive of C. clemensii, which is known from somewhat higher elevations. Most material of C. clemensii is not in fruit, the only cupules available being from the type, SAN 25315, from Sg. Mentaki in the Ranau District at 750 m. Here the leaves have underneath a few stellate, somewhat curled hairs and, unlike the rest of the clemensii material, have virtually no scales. The cupule, however, differs distinctly from that of C. oviformis in the smaller size, blackish colour, subglabrous surface, and branched spines.
The leaves in KORTHALS s.n. from Martapura, are up to 14½ by 5 cm and underneath thickly covered with scales and also have hairs on the nerves; those of S 18532 seem to be intermediate between these and the rest of the material.
The leaves in KORTHALS s.n. from Martapura, are up to 14½ by 5 cm and underneath thickly covered with scales and also have hairs on the nerves; those of S 18532 seem to be intermediate between these and the rest of the material.