Atalaya Blume

Small trees or shrubs, monoecious. Indumentum never stellate-fascicled. Leaves paripinnate (towards the inflorescence sometimes ternate to 1-foliolate), up to 5-jugate; stipules absent; petiole and rachis often partly marginate to sometimes winged. Leaflets entire; petiolules short to very short, swollen. Inflorescences terminal and sometimes in the upper leaf-axils, paniculate. Flowers regular or nearly so. Sepals 5, free, imbricate, margin in Malesian species petaloid, outer 2 smaller. Petals 5 (in one Australian species 4), imbricate, (sub)equal, slightly longer than the calyx, clawed, outside variably pilose, inside above the claw provided with a small, long-hairy scale. Disc annular, complete (in one Australian species interrupted), slightly undulate, hairy or glabrous. Stamens 8, free, all about equal, not exserted; filaments subulate, hairy at least in the lower half; anthers basally attached, oblong, emarginate at base, dehiscence latero-introse. Ovary triangular, 3-celled; style conical, slightly twisted, in Malesian species with 3 stigmatic lines; pistil-lode in male flowers minute or absent. Ovules 1 per cell, anatropous, apotropous, angular, attached about halfway the cell, sessile on a protuberance of the placenta. Fruits like 3-winged Acer-fruits (often, however, 1 or 2 cells abortive), breaking up to samarae with a dorsal, straight to curved, oblique wing, glabrous or tomentose. Seeds without aril, rootlet in a pocket.