Melastoma crinitum Naudin

Table of contents

  1. Protologue
  2. Synonyms
  3. Vernacular names
  4. Description
  5. Distribution, ecology and notes
  6. Collections

1. Protologue

Melastoma crinitum Naudin, Ann. Sci. Nat. Bot., Ser. 3, 13 (1850): 280. - Type: Cuming 853, Philippines, Luzon, Albay,1841 (BM!, K!, P!).

Shrubby, all tender parts very hairy. Leaves petioled, lanceolate, from three to five nerved, entire. Panicles terminal; flowers octandrous, border of the calyx eight-parted; segments ensiform, four of them minute, all ciliate.

A native of the most moist, and shaded parts of the rocky coast of Chittagong where it blossoms in April and May. It is remarkable for its great quantity of long, distinct, appressed, pale coloured hair, and large beautiful red flowers.

2. Synonyms

3. Vernacular names

Kaum sendudok, Sendudok gajah (Malaysia).

4. Description

Shrub or small tree up to 5 m tall; young branches quadrangular, covered with erect bristles c. 2--3 mm long, bark grey-brown; old branches terete, glabrescent. Leaves elliptic or ovate, 10--21 x 4.5--9 cm, base acute to rounded, apex acuminate; lamina on both sides covered with spreading bristles or sometimes strigose, bristle bases branched; nerves 5 or 7, covered with long spreading bristles; petiole 8--35 mm long. Inflorescences dense terminal 3--11-flowered cymes. Flowers 5-merous; bracts lanceolate, 5--12 x 2--4(--7) mm; outside covered with long bristles, inside glabrous. Hypanthium campanulate, 9--11 x 6--9 mm, covered with spreading bristles 4.5--7 mm long; sepals narrowly triangular, 8.5--10 x 2--4 mm, outside covered with bristles up to 5 mm, inside glabrous; intersepalar emergences not distinguishable from hypanthium bristles. Petals obovate-cuneate, 16--20(--34) x 11--16(--30) mm, ciliate at the apex, violet. Stamens dimorphic; anthers of longer outer stamens 8--9(--10.5) mm long, violet, connectives 7--8 mm long, ventrally curved, with 2 ventral appendages c. 2 mm long, filaments 7--8 mm long; anthers of shorter inner stamens 7--8(--9) mm long, yellow, connectives not prolonged, with 2 ventral appendages c. 0.8 mm long, filaments 4.5--5.5 mm long. Ovary shorter than the hypanthium, crowned by golden bristles. Fruit a campanulate fleshy capsule, 9--12 x 7--10 mm, rupturing irregularly longitudinally at maturity, exposing the solid, orange placenta.

5. Distribution, ecology and notes

Distribution - Indonesia, Malaysia, Philippines.

Distribution map of M. crinitum

Click to get a larger map. Map made with Online Map Creation.

Ecology - Collections: 32. In primary and secondary forests or along river-banks at altitudes of up to 2400 m.

Notes - The bristles on the leaf surfaces contain crystalliferous cells, which make it relatively easy to see that their bases typically are branched. Melastoma crinitum is similar to M. sanguineum - and has sometimes been synonymized with that species - but the two can clearly be separated by the branched bristle bases and the spreading bristles on the leaf surfaces. The leaves of M. crinitum are also larger than those of M. sanguineum.

6. Collections

INDONESIA

MALAYSIA

PHILIPPINES

SINGAPORE

Last Page: Introduction to Melastoma. Next Page: Index of scientific names of Melastoma.

Last updated 7 November 1999
Karsten Meyer