Shrubs; branchlets thinly appressed-pubescent. Leaves: blades lanceolate to oblong-lanceolate, 8 – 13 by 3 – 4 cm, subcoriaceous, yellowish brown when dry, glabrous above, sparsely strigose on nerves beneath, apex acute to shortly caudate or acuminate, base acute; midrib, nerves and nervules prominent on both surfaces, nerves 3 – 6 pairs, nervules subreticulate; petioles 4 – 5 mm long, sparsely strigose. Stipules small, triangular, 3 – 4 mm long, sparsely strigose. Cymes sessile or subsessile; bracts absent. Flowers sessile, small, crowded; calyx with an obconical tube and a hemispherical limb, minutely strigose, somewhat constricted at the throat, tube 1.5 – 2 mm long, limb shortly 4 - toothed or almost truncate, c. 1 mm long; corolla hirsute or glabrous outside, tube about 3 mm long, lobes c. 2 mm long. Drupes ovoid or ellipsoid, with a constricted base, glabrous, crowned by a cupular calyx-limb which is somewhat constricted at base; pyrenes 2 – 4, very furrowed on the abaxial face.
Sumber: A taxonomic revision of the Malesian species of Lasianthus (Rubiaceae)