Lasianthus malaccensis King & Gamble

Zhu, H., Roos, M. C. & Ridsdale, C. E., 2012, A taxonomic revision of the Malesian species of Lasianthus (Rubiaceae), Blumea 57 (1), pp. 1-102 : 59

publication ID

https://doi.org/10.3767/000651912X652012

persistent identifier

https://treatment.plazi.org/id/1664BC60-3C77-0D3D-FFEB-482CFE827C6A

treatment provided by

Felipe

scientific name

Lasianthus malaccensis King & Gamble
status

 

74. Lasianthus malaccensis King & Gamble View in CoL

Lasianthus malaccensis King & Gamble (1904) View in CoL 124; Ridl. (1923a) 165; K.M. Wong (1989) 368. — Type: Ridley 3219 (holo SING), Peninsular Malaysia.

Lasianthus flavinervius View in CoL auct non Ridl.: Craib (1934) 211.

Shrubs or treelets; branchlets terete, c. 1.5 mm diam, puberulous, very dark in colour when dry. Leaves: blades oblong-lanceolate, 7–13 by 2 –3.5 cm, coriaceous, glabrous above, appressed-pubescent hairs on midrib and nerves beneath, dark olivaceous-brown when dry, apex acuminate, margin reflected, base cuneate or acute, midrib and nerves slightly prominent above, prominent beneath, nerves 7–10 pairs, ascending at an angle of over 50°, curved to the margin, nervules distinct on both surfaces, reticulate; petioles 4–7 mm long, puberulous. Stipules triangular, the base broad, abruptly narrowed into the triangular apex, c. 1.5 mm long, puberulous. Cymes sessile; bracts absent. Flowers sessile; calyx campanulate-cupular, puberulous, c. 1.5 mm long, wide and minutely 5-toothed. Drupes subglobose, glabrous, crowned by 5– 6 obtuse short calyx teeth; pyrenes 4–5, smooth.

Distribution — Southern Thailand, Peninsular Malaysia.

Note — Lasianthus malaccensis is closely related to L. chinensis , especially the reticulate nervules and reflected leaf margins. It differs from the latter by having young branchlets puberulous, glabrescent, relatively smaller lanceolate to ovate-lanceolate leaves with acute to acuminate apex, midrib and nerves minutely appressed-pubescent beneath, less nerves (8 – 9 pairs), and smaller drupes. It is also closely related to L. wightianus , but differs from the latter by having young branchlets puberulous and later glabrescent, midrib and nerves minutely appressed-pubescent beneath, nerves 7–9 pairs, stipules relatively small.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Gentianales

Family

Rubiaceae

Genus

Lasianthus

Loc

Lasianthus malaccensis King & Gamble

Zhu, H., Roos, M. C. & Ridsdale, C. E. 2012
2012
Loc

Lasianthus malaccensis

King & Gamble 1904
1904
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