<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><strong>A taxonomic revision of <em>Geissospermum</em> (Apocynaceae, rauvolfioid)</strong></p><p><span><br /> </span></p></div></div></div>

Abstract

A taxonomic revision of the genus Geissospermum Allemão (Apocynaceae) is provided. Identification key, descriptions and illustrations of the species are presented, as well as data on geographical distribution and taxonomic comments. The following species are recognized: G. argenteum, G. reticulatum, G. sericeum, G. urceolatum and G. vellosoi. Geissospermum fuscum and G. laeve are synonymized in G. sericeum and G. vellosoi, respectively. After a careful analysis of the protologues of G. laeve and G. vellosoi, we concluded that the basionym for the type species of the genus is Tabernaemontana laevis, for which a lectotype was elected. Leaf blade indumenta characters were particularly useful for species recognition.

The trips of Apocynaceae through neotropical rainforests

“…To access data concerning fruity types, we used and Allorge-Boiteau (2015) for most of species, save for Tabernaemontana flavicans (Simões et al 2010) and Lacmellea aculeata (Simões et al 2007). Lorenzi (2016) contributed with useful information for Malouetia cestroides, likewise Morales et al (2017) for Prestonia annularis, Quesada & Rojas (2015) and Fallen (1983) for Condylocarpon intermedium and Barbosa et al (2019) for Geissospermum vellosoi. Information regarding pollen dispersal came from Ollerton et al (2019) in most cases, excepting for L. aculeata (Allorge-Boiteau 2015) and Tassadia obovata (Medeiros et al 2008).…”