Lithocarpus muluensis is a tree in the beech family Fagaceae. It is named for Gunung Mulu mountain in Sarawak, Borneo.
Description Lithocarpus muluensis grows as a tree up to tall with a trunk diameter of up to . The bark is flaky. Its coriaceous leaves measure up to long. Flowers are unknown. Its brown acorns are roundish and measure up to across.
Distribution and habitat Lithocarpus muluensis is endemic to Borneo, where it is confined to Gunung Mulu National Park in Sarawak. Its habitat is mixed dipterocarp to montane forest, up to elevation.
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