Gymnema R.Br. and Leichhardtia R.Br. (Apocynaceae), reinstated genera for taxa previously included in Marsdenia R.Br.: a conspectus for Australia, New Guinea and the Solomon Islands

Abstract

Forster, P.I. (2021). Gymnema R.Br. and Leichhardtia R.Br. (Apocynaceae), reinstated genera for taxa previously included in Marsdenia R.Br.: a conspectus for Australia, New Guinea and the Solomon Islands. Austrobaileya 11: 1–18. Species previously classified in a broadly circumscribed Marsdenia have been reclassified into 24 segregate genera as a result of molecular analyses. The species of Marsdenia previously recognised for Australia, New Guinea and the Solomon Islands are reallocated here to Gymnema and Leichhardtia. A conspectus of these two genera for these regions is provided with 72 new combinations as required, together with full synonymy and general distribution notes. Lectotypes or second step lectotypes are selected for Gymnema muelleri Benth., Marsdenia araujacea F.Muell., M. rostrata R.Br. and M. viridiflora R.Br.