Flora of Ceará, Brazil: subtribe Gonolobinae (Asclepiadoideae/Apocynaceae)

Abstract

We performed the taxonomic-floristic survey of subtribe Gonolobinae for the state of Ceará, as part of the “Flora do Ceará: knowing to conserve” project. The study was based on the comparative analysis of morphological characters, specialized bibliography, as well as photos of type-collections. In Ceará, six species of two genera were registered: Gonolobus rostratus, Matelea denticulata, M. endressiae, M. ganglinosa, M. harleyi, and M. nigra. Matelea ganglinosa has a broad distribution in the state, while G. rostratus, M. denticulata and M. endressiae are restricted. Matelea species were recorded in six Conservation Units and preferably dry environments (Stepic Savanna, Seasonal Deciduous Forest, and Lowland Semideciduous Forest).