Pseuduvaria aurantiaca is a species of plant in the family Annonaceae. It is endemic to New Guinea. Friedrich Anton Wilhelm Miquel, the Dutch botanist who first formally described the species using the basionym Orophea aurantiaca, named it after its orange colored (, in Latin) fruit.
It is a tree that reaches in height. Its branches have lenticels. Its leathery leaves are 14âÂÂ19.5 by 5.5âÂÂ7.5 centimeters and have pointed tips. The leaves are hairless when mature. The leaves have 12âÂÂ18 pairs of secondary veins emanating from the central rib. Its petioles are 1.5âÂÂ5 millimeters long with a groove on their upper side. Inflorescences are organized on slightly hairy peduncles 20âÂÂ35 millimeters long. Each inflorescence consists of up to 10 flowers. Each flower is on a densely hairy pedicel 2âÂÂ4 millimeters in length. The flowers are unisexual. Its flowers have 3 oval-shaped sepals, 0.8 by 1 millimeters, that have blunt tips. The outer surface of the sepals is densely hairy while the inside is smooth, and their margins have very fine hairs. Its 6 petals are arranged in two rows of 3. The outer petals are white or yellow-green and 2 by 2 millimeters. The outer petals are smooth on the inside and densely hairy on the outside. The inner petals have a 0.9 millimeter claw at their base and a 2âÂÂ3.5 by 1.5âÂÂ2 millimeter blade. The inner petals are smooth on their upper surface and densely hairy on their lower surface. Male flowers have up to 26 stamens that are 0.5âÂÂ0.6 millimeters long. The gynoecium consists of 1âÂÂ2 unfused carpels (monocarps). Fruit are attached to 30âÂÂ40 millimeter peduncles by 8âÂÂ9 millimeter pedicles. Mature monocarps are orange, hairy, wrinkly ellipsoids, 17âÂÂ21 by 13âÂÂ19 millimeters. Each monocarp has 6âÂÂ8 wrinkly seeds, 8.5âÂÂ13 by 6âÂÂ8.5 millimeters.
The pollen of P. aurantiaca is shed as permanent tetrads.