Lithocarpus hatusimaeLithocarpus hatusimae is a tree in the beech family Fagaceae. It is named for the Japanese botanist Sumihiko Hatusima.DescriptionLithocarpus hatusimae grows as a tree up to tall with a trunk diameter of up to. The greyish brown bark is smooth or fissured. Its coriaceous leaves measure up to long. The dark brown acorns are ovoid to conical and measure up to across.Distribution and habitatLithocarpus hatusimae is endemic to Borneo. Its habitat is mixed dipterocarp to montane forests from to elevation.