Gymnacranthera

Shrubs or trees, dioecious. Twigs often somewhat compressed, lenticellate, not flaky. Leaves rarely brittle when dry, lower surface pale, not papillose, dots absent; reticulation lax, faint. Inflorescences paniculate, branched from near the base (female more condensed); female in loose clusters, all in the same stage of development; basal cataphylls caducous; bracts caducous. Flowers short-pedicellate, bracteoles absent. Male flowers with urceolate, membranous or leathery, inside pubescent, yellow perianth; buds ellipsoid, cleft to about ½ or less; lobes 2-4, slightly outcurved (in female more or less reflexed); androecium sessile or with short or narrow androphore; synandrium ellipsoid, with 5-12 linear anthers, dorsally connate to the central column, laterally and at apices free, the connective sometimes slenderly protruding. Female flowers shorter and wider than male, more or less ovoid; ovary broadly ovoid, pubescent, stigma small, sessile, 2-lobed, each lobe entire or 3-6 lobulate. Infructescences paniculate, several-fruited. Fruits ellipsoid to globose, 2-3.5 cm. long, hairy or glabrescent; pericarp thick-leathery; aril laciniate to near the base, seeds not variegated; albumen ruminate, containing a fixed oil, starch absent; cotyledons divaricate, connate at base.

S. India, S. Thailand and Malesia to E. New Guinea; not known from Java, the Lesser Sunda Islands, and Palawan, Philippines

Gymnacranthera is a genus of flowering plants in the family Myristicaceae found from Peninsular Malaysia and Sumatra to New Guinea and the Philippines.