Keller, H.A. and Farinaccio, M.A. 2018. Occurrence of Topea patens and the subtribe Topeinae (Apocynaceae: Asclepiadoideae) in Brazil. Bonplandia. 27, 2 (Nov. 2018), 157–158. DOI:https://doi.org/10.30972/bon.2723537.