Alessandro Rapini, Jorge Fontella-Pereira, Elizabeth H. de Lamare, Sigrid Liede-Schumann, Taxonomy of Peplonia (Including Gonioanthela) and a Reinterpretation of Orthosieae (Asclepiadoideae, Apocynaceae), Kew Bulletin, Vol. 59, No. 4 (2004), pp. 531-539
No takes yet. Share an insight, caveat, or question.
Rapini et al. (2004) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: