Pleiogynium Engl.

Genus

Angiosperms > Sapindales > Anacardiaceae

Characteristics

Trees. Leaves imparipinnate, very rarely paripinnate, petioled. Leaflets opposite, entire. Inflorescences axillary, paniculate, sometimes the ♀ racemose or spiciform. Flowers often unisexual (plants often dioecious). Calyx 5-(rarely 4-or 6-)lobed. Petals 5 (rarely 4 or 6), imbricate. Stamens 10 (rarely 8-12), twice the number of petals; filaments filiform-subulate, glabrous; anthers slightly oblong or ovoid, abortive or imperfect in ♀. Disk annular-pulvinate, sometimes slightly convex, crenulate. Ovary 5-12-celled; styles 5-12, divergent; stigmas spathulate. Abortive pistil in ♂ rudimentary. Drupe 5-12-celled, 5-12-seeded; endocarp hard., woody. Seed with testa free from the endocarp; embryo slightly curved, cotyledons free, plano-convex.
More
Dioecious trees. Leaves alternate, mostly imparipinnate; leaflets opposite or subopposite, entire. Inflorescences axillary. Calyx 5-, rarely 4-or 6-lobed. Petals 5, rarely 4 or 6, imbricate. Male flowers: stamens 10, rarely 8–12, inserted below margin of disc; anthers dorsifixed, introrse; disc depressed-conical, crenate, surrounding central pistillode. Female flowers: staminodes similar to stamens but smaller; disc annular, radially furrowed; ovary depressed obovoid, crown-like with 8–12 styles on upper margin, 8–12-, rarely 5-locular with 1 pendulous ovule per locule. Fruit drupaceous, 5–12-seeded; exocarp membranous; mesocarp fleshy outside, woody inside; endocarp bony. Embryo curved; cotyledons free, plano-convex.
Life form perennial
Growth form tree
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Foliage retention deciduous
Sexuality dioecy
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Environment

Lowland forest, sometimes up to 560 m, rarely at 750-970 m.
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Hardiness (USDA) 9-12

Usage

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Cultivation

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Images

Pleiogynium unspecified picture

Distribution

Pleiogynium world distribution map, present in Australia, Fiji, Philippines, Papua New Guinea, Solomon Islands, and Tonga

Identifiers

LSID urn:lsid:ipni.org:names:1885-1
WFO ID wfo-4000030240
COL ID 63NTN
BDTFX ID -
INPN ID 672733
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Pliogynopsis Pleiogynium

Lower taxons

Pleiogynium papuanum Pleiogynium hapalum Pleiogynium timoriense