Fabio da Silva do Espírito Santo

Two new species of Handroanthus Mattos (Bignoniaceae) from the state of Bahia, Brazil

Two new species of Handroanthus Mattos (Bignoniaceae), endemic to Semideciduous Seasonal Forest of Bahia, are here described as H. diamantinensis and H. parviflorus. Illustrations, distribution maps, as well as a discussion about the morphological characteristics that distinguish the new species from related species are presented.

Two new species of Marsdenia (Apocynaceae) from limestone outcrops in Brazil

Abstract: Limestone outcrops often harbour floras rich in threatened and narrowly endemic species. Still, these formations, usually associated with karst landscapes, remain floristically poorly known, and so are often neglected in conservation programmes. In Brazil, three species of Marsdenia (Apocynaceae) endemic to limestone outcrops are known: M. breviramosa, M. virgultorum and M. zehntneri. In this work, we describe and illustrate two new species of Marsdenia restricted to karst landscapes: M. calcaria from the state of Minas Gerais and M. phallica from the state of Goiás. We also include illustrations of M. zehntneri, the species morphologically most similar to the two new species, and in situ images of the species of Marsdenia from limestone formations in Brazil (except for M. virgultorum, which is known only from the type). A geographic distribution map and an identification key for the five species known from limestone formations are also provided. Citation: Espírito Santo F. S., Bitencourt C., Ribeiro P. L. & Rapini A. 2018: Two new species of Marsdenia (Apocynaceae) from limestone outcrops in Brazil. — Willdenowia 48: 109–116. doi: https://doi.org/10.3372/wi.48.48107 Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

Chave interativa para a identificação das espécies da Aliança Tabebuia (Bignoniaceae) no estado da Bahia, Brasil

Foi elaborada uma chave interativa para a identificacao das 26 especies da Alianca Tabebuia (Bignoniaceae) nativas do estado da Bahia, Brasil. A partir de uma pagina web, contendo caixas de selecao com caracteres botânicos, de marcacao livre e nao sequencial, vao se eliminando as especies que nao atendem aos criterios selecionados ate a identificacao completa do material. A chave esta inserida em um site, contendo informacoes sobre Bignoniaceae, a Alianca Tabebuia e o estado da Bahia, bem como um glossario dos termos botânicos utilizados na chave e um banco de imagens. O sistema foi desenvolvido a partir das linguagens HTML e Javascript, e autoexecutavel em CD-ROM e esta disponivel para download em: http://www.mendeley.com/profiles/alessandro-rapini/publications/ComputerProgram/. A utilizacao das chaves interativas facilita e dinamiza o processo de identificacao dos taxons, contribuindo para a difusao do conhecimento biologico e elaboracao de programas voltados ao reconhecimento e conservacao da biota.