Goniothalamus sukhirinensis sp. nov. A vegetative branch B petiole, showing base of leaf lamina C flowers D sepal (abaxial) E sepal (adaxial) F outer petal (abaxial) G outer petals (adaxial) H inner petal (abaxial) I inner petal (adaxial) J stamen (abaxial) K stamen (adaxial) L carpel (abaxial) M carpel (adaxial) N fruit, composed of separate monocarps O seed with hairy surface. Drawn by A. Somphrom from C. Leeratiwong 21–1708 (PSU).

 
 
  Part of: Leeratiwong C, Chalermglin P, Saunders RMK (2021) Goniothalamus roseipetalus and G. sukhirinensis (Annonaceae): Two new species from Peninsular Thailand. PhytoKeys 184: 1-17. https://doi.org/10.3897/phytokeys.184.73210