Melastomataceae

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Melastomataceae
Tibouchina semidecandra at Strybing Arboretum, San Francisco
Scientific classification
Kingdom:Plantae
Division:Magnoliophyta
Class:Magnoliopsida
Order:Myrtales
Family:Melastomataceae
Genera

Acisanthera
Athrostemma
Astronidium
Calycogonium
Clidemia
Conostegia
Dissotis
Graffenrieda
Henriettea
Henriettella
Heterocentron
Heterotrichum
Leandra
Mecranium
Medinilla
Melastoma
Miconia
Mouriri
Nepsera
Ossaea
Oxyspora
Pterolepsis
Rhexia
Sagraea
Tetrazygia
Tibouchina
Trembleya

The family Melastomataceae is a taxon of dicotyledonous flowering plants found mostly in the tropics (two thirds of the genera are from the New World tropics) comprising some 200 genera and 4500 species. Melastomes are annual or perennial herbs, shrubs, or small trees.

The leaves of melastomes are somewhat distinctive, being opposite, decussate, and usually with 3-7 longitudinal veins arising either from the base of the blade, plinerved (inner veins diverging above base of blade), or pinnately nerved with three or more pairs of primary veins diverging from the mid-vein at successive points above the base.

Flowers are perfect, and borne either singly or in terminal or axillary, paniculate cymes.

A number of melastomes are regarded as invasive species once naturalized in tropical and subtropical environments outside of their normal range. Examples are Koster's curse and Miconia calvescens, but many other species are involved.

Missing image
Melastome_lvs.jpg
Characteristic veination of many melastomes
pt:Melastomataceae

fr:Melastomataceae

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