Pseuduvaria silvestris is a species of plant in the family Annonaceae. It is native to New Guinea. Ludwig Diels, the botanist who first formally described the species under the basionym Orophea silvestris, named it after the forested ( in Latin) habitat the specimens he examined were found growing in near the Waria River.
It is a small tree reaching in height. The young, grey-brown to black branches are densely hairy. Its elliptical to oval or egg-shaped, papery to slightly leathery leaves are by . The leaves have heartâÂÂshaped bases and tapering tips, with the tapering portion 14âÂÂ43 millimeters long. The leaves are hairless on their upper and densely hairy on their lower surfaces. The leaves have 12âÂÂ22 pairs of secondary veins emanating from their midribs. Its petioles, if present, are densely hairy, 1âÂÂ4 by 1âÂÂ3 millimeters with a broad groove on their upper side. Its solitary Inflorescences occur on branches, and are organized on very densely hairy peduncles that are 10âÂÂ18 by 0.1âÂÂ0.5 millimeters. Each inflorescence has 1âÂÂ2 flowers. Each flower is on a very densely hairy pedicel that is 3âÂÂ7 by 0.2âÂÂ0.4 millimeters. The pedicels are organized on a rachis up to 5 millimeters long that have 5âÂÂ7 bracts. The pedicels have a medial, very densely hairy bract that is 0.3 millimeters long. It has male and hermaphroditic flowers, but the latter are poorly described in the literature. Its flowers have 3 triangular sepals that are partially fused at their base. The sepals are 0.2 by 0.7 millimeters. The sepals are hairless on their upper surface, densely hairy on their lower surface, and hairy at their margins. Its 6 petals are arranged in two rows of 3. The dark purple to red, circular, outer petals are 0.7 by 0.9 millimeters with hairless upper and very densely hairy lower surfaces. The dark purple to dull red, diamond-shaped inner petals have a 0.6 millimeter long claw at their base and a 2âÂÂ3 by 1.5âÂÂ2.5 millimeter blade. The inner petals have pointed bases and tips. The inner petals are slightly hairy on their upper surfaces and very densely hairy on their lower surfaces. Male flowers have up to 29 stamens that are 0.4âÂÂ0.6 by 0.4âÂÂ0.5 millimeters. The fruit occur in clusters of 1âÂÂ2 on densely hairy pedicles that are 5âÂÂ12 by 0.5âÂÂ1.5 millimeters. The pedicels are attached to a densely hairy peduncle that is 10âÂÂ21 by 0.5âÂÂ1 millimeters. The orange, globe-shaped to elliptical fruit are 8âÂÂ28 by 6âÂÂ27 millimeters. The fruit are smooth, and very densely hairy. Each fruit has up to 5 hemispherical to lens-shaped seeds that are 8âÂÂ9.5 by 5âÂÂ8 by 3.5âÂÂ5 millimeters, arranged in two rows. The seeds are wrinkly.
The pollen of P. silvestris is shed as permanent tetrads.
It has been observed growing in lowland forests at elevations of .