Tree, to 12 m tall, usually less than 12 cm dbh; bark thin, brown, flaky; sap milky; branchlets glabrous, with prominent leaf scars. Leaves clustered at apex of branchlets; petioles 1.5-4.5 cm long; blades obovate, usually acuminate, tapered to an obtuse or rounded base, 12-30 cm long, 6-13 cm wide, finely white-strigillose on major veins below and sometimes sparsely so on lower or upper surfaces, drying thin; major veins in 15-25 pairs, the secondary lateral veins mostly perpendicular to the primary lateral veins. Flowers densely clustered on stems below leaves; pedicels ca 5 mm long; sepals ca 8, sericeous except on margins, increasing in size centripetally, to 6 mm long; other flower parts unknown. Fruits obovoid, to 10 cm long and 7.5 cm wide, fleshy and yellow-green, the surface smooth and shiny with a few irregular lenticels; seed 1, obovoid, to 6.5 cm long, fleshy, the seed-coat firm, yellowish. Croat 16636. Rare, known from the young forest north-northwest of the Tower Clearing; some fruits have been seen in the old forest south of Armour Trail 700 and on Orchid Island. Flowering season unknown. Mature fruits have been seen in May and July.