Mackinlaya celebica (Harms) Philipson

Shrub or small sparsely branched tree to 6 m. Leaves very variable in size and complexity; petiole up to 52 cm, 1.25 cm wide, terete, striate, with a membranous base ensheathing the stem; leaflets 5 (rarely 3) or the central petiolule (or the central 3 petiolules) frequently dividing to bear three, or more rarely 5 leaflets; lateral petioles short (c. 1-2 cm), the three central longer (up to 12 cm); lamina elliptic or ovate, up to 48 by 22 cm, base abruptly attenuated into the petiolule or subcordate, apex acuminate or gradually narrowed, acute, margin entire, denticulate or coarsely serrate, especially towards the apex, membranous, lamina of the terminal leaflet (and less frequently of the central three leaflets) sometimes deeply 3-lobed or with 3-5 separate leaflets, of which the lateral are markedly oblique at the base. Inflorescence a terminal compound umbel, very variable in size, either entirely of male flowers or with male and hermaphrodite flowers, often overtopped by sym-podial growth; peduncle terete, striate, stout, up to 30(-45) cm, ¾ cm ø, bearing lanceolate bracts below the rays; primary rays c. 9-18, 10-20 cm, striate, with distal small linear bracts; secondary rays about 5-10, 3-6 cm, dividing again (often repeatedly) either umbellately or in an irregular cymose manner, the central ray frequently more strongly developed. Calyx lobes 5, triangular, c. 1 mm long. Petals 5, obovate c. 1.5 mm long. Filaments c. 1.5 mm, anthers small. Ovary obconic, 1-2 mm long, narrowly turbinate in male flowers, ovoid and quickly swelling in female flowers. Fruit up to 2.5 by 3 cm, compressed, rotund, constricted in the mid-axis, the two halves frequently unevenly developed.

Rain-forest, open hill forest, and montane forest, also in secondary growths, from sea-level to 1450 m.

Uses. Lane-Poole (l.c.) recorded that at Mt Obree leaves and flowers are cooked with coconut oil and put in armlets in dances.