A new species of Styrax series Cyrta (Styracaceae) from Cambodia
Styrax cambodianus, a new species of Styrax L. ser. Cyrta (Lour.) P.W. Fritsch from Virachay National Park in northeastern Cambodia, is described and illustrated. It is similar to S. hookeri C.B. Clarke but differs by its two most proximal leaves alternate, abaxial surfaces with mostly planar or occasionally slightly raised quaternary veins, rotate corollas, and stamen filaments strongly flexuous in the upper half. Styrax cambodianus is known only from the type and is the only species of the series unequivocally documented from Cambodia. The discovery of this species brings the number of Styrax ser. Cyrta to 31.
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