Tree 8-20(-25) m. Leaves thinly chartaceous, (elliptic-)oblong, 12-24 by 3.5-7 cm, base (subcordate or) rounded to short-attenuate, apex acute-acuminate; Inflorescences: Fruits solitary or 2 or 3 per infructescence, ovoid, 2.5-3.5 by 1.8-2.5 cm, with dense or sparse pale brown hairs 0.1 mm or less, sometimes glabrescent, style persistent or leaving a scar;
Asia-Tropical: Borneo present (Sabah present), NE Sarawak present
Malesia: Borneo (NE Sarawak: 5th Div.; Sabah).
Knema stylosa, with obovoid male buds, belongs in the group of K. obovoidea, in the vicinity of species like K. pulchra and K. piriformis, hence species with male buds narrowly pear-shaped, cleft c. 2/3 only. In habit it may be confused with K. glauca, a species also with a weak indumentum on the lower leaf surface, distinct in globose male buds, stiped anthers, and early glabrescent fruits. An additional character of K. stylosa is the largely sunken midrib into a groove above. Knema pulchra is much stouter, always with a cordate or broadly rounded leaf base, larger male buds, more anthers, and larger fruits; K. piriformis is a mountain species, with more narrowly pear-shaped male buds, stiped anthers, the indumentum on the lower leaf surface more distinct.