Welcome to The genus Knoxia and note on Duperrea (Rubiaceae) in Thailand

A taxonomic revision of Knoxia in Thailand is presented. The following three species are recognized: K. rosettifolia, K. roxburghii and K. sumatrensis. A key to the species, ecological data and geographical distribution are provided. Duperrea scabrida is placed in synonymy of D. pavettifolia.