Maranthes Blume

Genus

Angiosperms > Malpighiales > Chrysobalanaceae

Characteristics

Medium-sized to large trees. Stipules deltate, intrapetiolar, stiff, caducous. Leaves glabrous on both surfaces when mature (or lanate in African species), with dense caducous cobweb-like indumentum when young, without stomatal crypts; with paired glands at junction of lamina and petiole. Petioles eglandular. Inflorescence a many-flowered corymbose panicle. Bracts and bracteoles eglandular, caducous, not enclosing flower buds in small groups. Flowers hermaphrodite. Receptacle obconical, narrowed into pedicel, solid, almost completely filled with nectariferous tissue, short tomentose to glabrous on exterior, glabrous within, calyx lobes suborbicular, deeply concave, unequal. Petals 5, not clawed. Stamens 25-40, inserted on margin of disk, unilateral with tooth-like staminodes opposite to almost in a complete circle; filaments far exserted beyond calyx lobes, in a tangled mass. Ovary inserted laterally at mouth of receptacle; carpel bilocular with 1 ovule in each loculus. Style pubescent at base only, curved upwards, exserted. Fruit a large fleshy drupe; epicarp smooth, glabrous, not lenticellate; mesocarp fleshy; endocarp very hard, fibrous with a rough exterior, densely tomentose within, with 2 lateral plates which break away on germination. Germination phanerocotylar. Cotyledons fleshy, pale green; cataphylls absent; first 2 eophylls opposite, the others alternate or opposite.
More
Receptacle-tube often slightly curved, obconoidal or subcampanulate, always gradually narrowed into the pedicel, nearly always almost solid and almost completely filled with nectariferous tissue, glabrous inside on one side, hairy on the other, or completely glabrous.
Stamens 20–60; filaments white, inserted in two rows on the free margin of the disk; tightly undulate in bud with 2 or more undulations, much longer than the sepals, usually occurring in a tangled mass; staminodes few and vestigial or absent.
Drupe fleshy; endocarp very hard, fibrous with a rough exterior; glabrous inside, with 2 lateral plates which break away on germination and allow the seedlings to escape.
Ovary of 1 or sometimes 2–3 bilocular carpels, inserted at mouth of receptacle-tube; style curved upwards, much longer than the sepals, glabrous except at base.
Bracts and bracteoles eglandular, caducous, not concealing young flowers.
Lower leaf-surface glabrous or with dense arachnoid indumentum.
Inflorescence a many-flowered corymb or panicle.
Germination epigeal; first leaves opposite.
Petals suborbicular to broadly lingulate.
Sepals suborbicular, deeply concave.
Flowers slightly zygomorphic.
Trees.
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Growth form tree
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Foliage retention evergreen
Sexuality hermaphrodite
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Hardiness (USDA) 8-12

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