Lasianthus iteoides Valeton ex H.Zhu, 2012

61. Lasianthus iteoides Valeton ex H.Zhu View in CoL , sp. nov. — Fig. 18 View Fig

Similis L. hexandro Blume , sed lobis calycis triangulatis c. 1 mm longis aequalis tubo differt. — Typus: Bünnemeijer 3578 (holo L), Indonesia, Sumatra Barat, Malintang, Gunung , c. 1100 m alt., 18 July 1918 .

Shrub, c. 3 m high; branchlets terete, c. 1.5 mm diam, densely appressed hirsute. Leaves: blades lanceolate to oblong lanceolate, 6 –13 by 1.6 –3 cm, subcoriaceous, glabrous above except hirsute midrib, villose beneath; apex acute to acuminate, margin slightly recurved, base acute, midrib depressed above,

Distribution of Lasianthus inodorus Blume (▲), L. ino­. montigenus H.Zhu (●) and L. inodorus subsp. pu­ Zhu (¡).

prominent beneath, hirsute, nerves depressed and obscure above, prominent and conspicuous beneath, hirsute beneath, 7–8 pairs, ascending at an angle of 60–70°, curved to mar- gin, nervules obscure above, conspicuous beneath, villose, reticulate; petioles c. 5 mm long, densely appressed hirsute. Stipules triangular, 1 mm long, appressed hirsute. Inflorescences sessile; bracts inconspicuous. Flowers fascicular, sessile; calyx obconical, c. 2 mm long, densely villose, lobes 4–5, triangular, 1 mm long, villose both surfaces; corolla claviform when in bud, densely spreading villose, 6 –7 mm long, lobes triangular-oblong, c. 2 mm long; stamens with c. 0.8 mm long filaments; styles 5 mm long. Drupes globose, c. 5 mm diam, villose; pyrenes 5, smooth on the abaxial face.

Distribution — W Sumatra.

Habitat & Ecology — In forest between 100–1100 m altitude. Flowering in July; fruiting in September.

Additional specimens examined. Sumatra, Malintang, Bünnemeijer 3862

(L); Sumatra,Sago,Gunung, Bünnemeijer 3686 (L), Dayar Arbain DA399 (L).

Notes — This species is similar to L. hexandrus , but differs from the latter by having triangular calyx lobes, c. 1 mm long, as long as the calyx tube. Lasianthus hexandrus has lanceolate calyx lobes, 3–4 mm long, conspicuously longer than the tube. Valeton recognized the species as a new one, but did not made the description except a determination label on the type specimen. Here we described it as a new species.