Ridsdalea
Ridsdalea is an Asian genus of plants in the family Rubiaceae; it was named after Dr. Colin Ernest Ridsdale, who was an English botanist and specialist in tropical plants and the Rubiaceae family. The type species is Ridsdalea grandis J.T.Pereira, which was renamed from the basionym Gardenia grandis. Several other species have been reassigned from other genera: notably Rothmannia, which is now reserved for African species. Its native range is southern China, Indo-China, Malesia and New Guinea.