RAMELLA, L. & P. PERRET (ed.) (2010). Notula ad Floram paraquaiensem, 106. Candollea 65: 393–402. In Spanish, French and English abstracts.
Thirty-fifth installment of a series dedicated to the presentation of taxonomic, nomenclatural or floristic novelties in relation with the project “Flora del Paraguay” as well as complements to already published treatments. Organizational information and accounts on the advancement of the project are sometimes added by the editors. — Notula 106. Synopsis and typifications of the species of the genus Oxypetalum R. Br. (Asclepiadaceae) in Paraguay, by Jorge Fontella Pereira, Sergio A. Cáceres Moral & Monique Britto de Goes. The authors present a key and a synopsis of the 31 species and 3 infraspecific taxa of the genus Oxypetalum R. Br. in Paraguay. They validate the new combination Oxypetalum martii var. nanum (Malme) Fontella & S. A. Cáceres and publish a new synonym. The authors lectotypify: Oxypetalum acerosum Malme, Oxypetalum clavatum Malme, Oxypetalum ceratostemma Malme, Oxypetalum marginatum Malme. They correct the wrong citation of the syntypes in the protologue of Oxypetalum acerosum Malme and specify the holotype of Oxypetalum aurantiacum Malme not mentioned in the protologue.