Ridsdalea is an Asian genus of plants in the family Rubiaceae; it was named after Dr. Colin Ernest Ridsdale (1944–2017), who was an English botanist and Specialist in tropical plants and Rubiaceae family. The type species is Ridsdalea grandis (Korth.) 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. Species As accepted by Plants of the World Online, and IPNI list: Ridsdalea alba K.Khamm. Ridsdalea anisophylloides (Wernham) J.T.Pereira Ridsdalea attopevensis (Pit.) J.T.Pereira Ridsdalea daweishanensis (Y.M.Shui & W.H.Chen) J.T.Pereira Ridsdalea eucodon (K.Schum.) J.T.Pereira Ridsdalea forsteniana (Miq.) J.T.Pereira Ridsdalea graciliflora (Merr.) J.T.Pereira Ridsdalea grandis (Korth.) J.T.Pereira Ridsdalea kampucheana (Tirveng.) J.T.Pereira Ridsdalea kassamensis J.T.Pereira Ridsdalea lagunensis (Merr.) J.T.Pereira Ridsdalea leytensis (J.T.Pereira & Ridsdale) J.T.Pereira Ridsdalea macromera (Lauterb. & K.Schum.) J.T.Pereira Ridsdalea merrillii (Elmer) J.T.Pereira Ridsdalea negrosensis (Merr.) J.T.Pereira Ridsdalea nigrescens (Valeton) J.T.Pereira Ridsdalea papuana J.T.Pereira Ridsdalea pseudoternifolia (Valeton) J.T.Pereira Ridsdalea puffiana J.T.Pereira Ridsdalea pulcherrima (Kurz) J.T.Pereira Ridsdalea schoemannii (Teijsm. & Binn.) J.T.Pereira Ridsdalea sootepensis (Craib) J.T.Pereira Ridsdalea sundaensis J.T.Pereira Ridsdalea thailandica (Tirveng.) J.T.Pereira Ridsdalea uranthera (C.E.C.Fisch.) K.M.Wong Ridsdalea uvarioides (Valeton) J.T.Pereira Ridsdalea venalis (Bremek.) J.T.Pereira Ridsdalea vidalii (Bremek.) J.T.Pereira Ridsdalea vietnamensis (Tirveng.) J.T.Pereira Ridsdalea wittii (Craib) J.T.Pereira References External links Gardenieae Rubiaceae genera Flora of Indo-China Flora of Malesia