Pseudoxandra leiophylla is a species of plant in the family Annonaceae. It is native to Brazil, Colombia, and Venezuela.[1] Ludwig Diels, the German botanist who first formally described the species using the basionym Unonopsis leiophylla, named it after its smooth (Latinized form of Greek Greek, Ancient (to 1453);: λεῖος, leîos)[2] leaves.[3]
It is a tree reaching 4 to 25 meters in height. Its shiny leathery leaves are 10-20 by 4-7 centimeters and come to a point at their tips. The leaves are hairless on their upper and lower surfaces, but can have warty bumps. The leaves are dark brown, greenish brown or black-brown above and brown or dark brown on their underside. Its petioles are 2-8 millimeters long. Its flowers are solitary or in pairs and axillary. Each flower is on a pedicel 1-5 millimeters long. Its flowers have 3 oval-shaped sepals that are 2-5 by 4-7 millimeters. The sepals are hairy when young, but smooth when mature. Its 6 petals are arranged in two rows of 3. The outer petals are white, 7-12 by 7-8 millimeters, and concave. The outer petals are densely hairy on their outer surface. The inner petals are white, 5-9 by 4-5 millimeters, and concave. The inner petals are smooth on their outer surface except for a densely hairy patch running from the tip to the base. It has numerous stamens that are 1.5-3 millimeters long. Each flower has 2-15 monocarps that are yellow, brown, red or black at maturity and 9-14 millimeters wide. Its shiny brown seeds are 4-9 by 7-9 millimeters.[4]
The pollen of P. leiophylla is shed as permanent tetrads.[5]