Melastoma

Linnaeus

Sp. Pl. 1: 389. 1753.

Common names: Melastome
Etymology: Greek melas, black, and stoma, opening, alluding to stained mouth, especially of children, when fruits of some species are eaten
Treatment appears in FNA Volume 10.
Revision as of 21:04, 7 June 2022 by imported>Volume Importer
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 TaxonIllustrator 
FNA10 P38 Tetrazygia bicolor.jpgTetrazygia bicolor
Melastoma malabathricum

Shrubs or trees. Stems erect or procumbent, 4-sided [subterete], often squamose-strigose; bark scaly. Leaves petiolate; blade with 1 or 2 [–4] pairs of lateral primary-veins, marginal pairs often inconspicuous, margins entire, surfaces usually strigose [subvillous to villous, rarely glabrate]. Inflorescences terminal or in distal foliar axils, usually cymes, rarely panicles or flowers solitary; bracts deciduous or persistent, leaflike, ovate, sometimes conspicuous. Flowers pedicellate; hypanthium campanulate to globose-urceolate; calyx deciduous, 5-lobed, lobes triangular to lanceolate or ovate; petals 5 (–8), spreading, symmetric, light to dark-pink, lavender, or purple; stamens 10, unequal, in 2 whorls, dimorphic, episepalous stamens with purple, upcurved anthers and long connectives, epipetalous stamens with yellow, straight anthers and shorter connectives, or stamens isomorphic and connectives slightly prolonged; anthers slightly downcurved, linear-oblong, 2-locular, dehiscent by 1 or 2 apical pores, or by short, longitudinal slits; ovary semi-inferior, adnate to floral-tube, 5-locular; style straight, filiform, equal to petals. Fruits fleshy and irregularly splitting-dehiscent, [capsules and apically dehiscent, or berries and fleshy, indehiscent]. Seeds cochleate.

Distribution

Introduced; Florida, Asia, Pacific Islands, Australia, also in Mexico, elsewhere in Pacific Islands (New Zealand)

Discussion

Species 22 (1 in the flora).

Most species of Melastoma have fleshy, irregularly dehiscent fruits; others have dry capsules [for example, M. pellegrinianum (H. Boissieu) Karsten Meyer].

Selected References

None.

... more about "Melastoma"
pedicellate +, subsessile +  and zygomorphic +
not versatile +  and basifixed +
downcurved +  and upcurved +
linear-oblong +
Guy L. Nesom +
Linnaeus +
indehiscent +  and dehiscent +
persistent +  and deciduous +
conspicuous +
deciduous +
5-lobed +
indehiscent +  and dehiscent +
Melastome +
Florida +, Asia +, Pacific Islands +, Australia +, also in Mexico +  and elsewhere in Pacific Islands (New Zealand) +
Greek melas, black, and stoma, opening, alluding to stained mouth, especially of children, when fruits of some species are eaten +
free +  and distinct +
geniculate +
splitting-dehiscent +
perennial +
campanulate +  and globose-urceolate +
axillary +  and terminal +
in distal foliar axils +  and terminal +
alternate +, verticillate +, decussate +  and opposite +
persistent +  and deciduous +
triangular +  and lanceolate or ovate +
crenulate +, serrulate +  and subentire +
Several (?) +  and No (?) +
semi-inferior +
crassinucellate +  and bitegmic +
orthotropous +  and anatropous +
smaller +
light +  and dark-pink lavender or purple +
distinct +
5-carpellate +  and 4-carpellate +
tawny +  and purple or black +
20 +  and 100 +
cochleate +
not laticiferous +
unequal +
2 times number of petals +
squamose-strigose +
4-angled +
subsessile +, sessile +  and petiolate +
straight +
filiform +
Melastoma +
Melastomataceae +
cross-veined +