Wiya, C. & Chaowasku, T. (2021)

Disintegration of Polyalthia debilis (Annonaceae): P. cambodica comb. nov., P. canaensis comb. et stat. nov., and P. suthepensis nom. nov. for Unona dubia

. Phytotaxa 487 (3): 273–282. https://doi.org/10.11646/phytotaxa.487.3.7