The genus Gynura Cass. (Asteraceae Senecioneae) comprises 44 species and is
distributed from tropical Africa to South
and East Asia and Australasia with one
species in tropical Australia (Vanijajiva &
Kadereit, submitted). The highest specific
diversity is found in Southeast Asia
(Davies, 1981), but the genus is least well
understood particular in Thailand (Davies,
1978; Koyama, 1988). In the absence of
extensive fieldwork, the account presented
here for Thailand can at best be regarded as
provisional.