A new species of Aspidosperma (Apocynaceae) from the Brazilian Cerrado

Abstract

Aspidosperma rizzoanum is a new species of Cerrado from Goiás and Tocantins states, Brazil. Here we provide the description and illustration of this new species and, besides that, a comparative table and an identification key to the species occurring in the Cerrado of Goiás and Tocatins.

Increasing the known floristic diversity of Brazilian inselbergs: two new species of Mandevilla (Apocynaceae) from Espírito Santo

“…Apocynaceae are highly diverse in Brazil, with around 760 species reported (Koch et al 2015). In the last fifteen years, as a result of floristic, taxonomic or phylogenetic studies, several endemic species and genera have been described (e.g., Konno et al 2006;Sales et al 2006;Rapini & Farinaccio 2010;Rapini & Pereira 2011;Farinaccio 2013;Espirito Santo et al 2018 a;b;Scudeler et al 2018;Pereira et al 2019). Mandevilla (apocynoids, Mesechiteae) comprises ca.…”

Reestablishment, new records, and a key for the species of Aspidosperma (Apocynaceae) from the Brazilian Amazon

“…(Apocynaceae) is the largest genus of the tribe Aspidospermeae Miers, and belongs to the rauvolfioid grade (Endress et al 2014;Simões et al 2007;. The genus has a Neotropical distribution, occurring from Mexico to Argentina (except Chile), and currently comprises 64 species (Marcondes-Ferreira 1999;Morales & Zamora 2017;Pereira et al 2016;2017;Scudeler et al 2018; Brazilian Flora 2020 under construction). The genus can be recognized by having the following: arboreal or shrubby habit, usually whitish or reddish (rarely colorless) latex, usually alternate (rarely opposite or whorled) leaves, flowers with slightly-differentiated style-head, woody follicles, and winged seeds (Woodson 1951;Marcondes-Ferreira 1988;Machate et al 2016;Pereira et al 2016).…”

“…Although Aspidosperma is a well-studied genus (e.g., Candolle 1844; Müller-Argoviensis 1860; Schumann 1895; Pichon 1947;Woodson 1951;Marcondes-Ferreira 1988;Marcondes-Ferreira & Kinoshita 1996;Potgieter 1999), the circumscription of some species remains unclear and the genus is considered one of the most taxonomically difficult among Neotropical Apocynaceae (Morales & Zamora 2017). Recent taxonomic studies have been performed on species of Aspidosperma from Brazil (Machate et al 2016;Pereira et al 2016), with three new species being described for the genus (Morales & Zamora 2017;Pereira et al 2017;Scudeler et al 2018).…”