Lasianthus hirsutisepalus H.Zhu, 2012

55. Lasianthus hirsutisepalus H.Zhu View in CoL , sp. nov.

Proximus L. appresso Hook.f. , sed nervis rare hirsutis subtis, nervulis reticulates, calycibus dense hirsutis, lobis calycis ovato-triangulatis dense hirsutis et pyrenis 4 differt.—

Typus: Tong et al. S.32936 (holo K), Malaysia (Borneo), Ulu Sg. Masia , 4700 ft, 13 Mar. 1973 .

Shrub, c. 3 m high; branches and branchlets terete, densely appressed-hirsute. Leaves: blades relatively small, lanceolate, 6 –8 by 1.5 – 2 cm, subcoriaceous, pale shining and glabrous above when dry, hirsute on midrib and sparsely hirsute on nerves beneath, apex acute to acuminate, base acute to cuneate, midrib slightly depressed above, prominent beneath, nerves flat above, prominent beneath, 5 pairs, ascending at an angle of 30–40°, curved to the margin, nervules conspicu- ous, prominent on both sides, reticulate; petioles 5 –10 mm long hirsute. Stipules triangular, c. 1 mm long, hirsute. Cymes sessile; bracts inconspicuous. Flowers sessile; calyx campanulate, densely hirsute on outside, tube c. 2 mm long, lobes 4, ovate-triangular, 1.5– 2 mm long, densely hirsute both sides; corolla not seen. Drupes small, 3 mm diam, globose, crowned by the ovate-triangular calyx lobes, hirsute; pyrenes 4, smooth on abaxial face.

Distribution — Endemic to Borneo.

Habitat & Ecology — Flowering March.

Note — This species differs from L. appressus in having sparse hirsute hairs on nerves beneath, nervules reticulate; calyx densely hirsute, lobes ovate-triangular, densely hirsute on both sides; drupes with 4 pyrenes.