Pacific Island Ecosystems at Risk (PIER)

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Memecylon floribundum
Blume, Melastomataceae
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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Other Latin names:  Memecylon caeruleum Jack

Common name(s): [more details]

Chinese: tian lan gu mu

Habit:  shrub

Description:  "ShrubLeaves without basal nerves or nearly so, but midrib obvious (1-nerved), or slightly 3-nerved (basal nerves weak but not inconspicuous); side nerves absent to ell-developed.  Leaves 1-nerved on both surfaces.  Flowers hermaphrodite. Flowers in simple or compound umbels; petals purple or blue.  Pedicels articulate near the middle, thick, 3-5 mm, bibracteolate, the bracteoles persistent, curved, ± 1/2 mm long; inflorescence 8-15-flowered; peducle 2-5 mm; hypanthium broadly campanulate, 4 mm; its upper rim minutely 4-dentate; petals obovate-orbicular, 3-4 mm, bluish purple within, reddish without.  Leaves thick-coriaceous, apex acute, obtuse or sometimes emarginate, mucronate, the mucro easily damaged, ovate-oblong-elliptic, obtuse or rounded, rarely cuneate at base, with obscure cross-veins on both sides, 6-17 1/2 cm by 2 1/2-8 cm; petiole 3-7 mm.  Ovules 7-10, often 8; style 4-5 mm; berry obovoid or ellipsoid, with an unequal base, 1-1 1/2 cm long" (Backer & Bakhuizen van den Brink, 1963; pp. 371-372).

Habitat/ecology:  "Forests and forest gaps, mountain slopes, rock outcrops.  Where native, this shrub is common on rocky and sandy shores.  It is invasive because it becomes dominant in the shrub layer of forests and the dense canopies eliminate all vegetation by shading out.  Forest gaps are quickly covered by a continuous cover of seedlings of this shrub.  Establishment depends on light and occurs in openings and disturbed sites.  Established stands have a very low plant and invertebrate species richness and prevent natural forest regeneration"  (Weber, 2003; p. 265).  "Brushwoods, young forest, village-groves" (Backer & Bakhuizen van den Brink, 1963; pp. 371-372).

Propagation:  Bird-dispersed seed (Weber, 2003; p. 265).

Native range:  China, Cambodia, Vietnam and Indonesia; cultivated and naturalized elsewhere (GRIN).


Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Seychelles Islands
Mahé Island introduced
Gerlach, J. (1995)
Seychelles Islands
Seychelles Islands introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)


Physical:  Hand pull or dig out seedlings and young trees.

Chemical:  Cut large plants and treat the stumps with herbicide.

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This page was created on 1 JAN 1999 and was last updated on 21 MAY 2013.