Taxonomy and ecology of Achnanthidium (Bacillariophyta, Achnanthidiaceae) from southeastern Brazil with the description of six new species
Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii
Lactifluus hezhangensis sp. nov. (Russulaceae, Russulales) from Southwest China
Critical evaluation of two published descriptions of the same species of Ceratozamia (Zamiaceae) from northern Oaxaca, Mexico, and the formal synonymization of C. martinezii under C. aurantiaca
Paraphlomis strictiflora (Lamioideae, Lamiaceae), a new species from Guizhou, China
A new species of Gonolobus (Apocynaceae, Asclepiadoideae, Gonolobineae) from Loja, Ecuador
Miconia amplipedunculata (Melastomataceae: Miconieae), a new species from the Caribbean lowlands of Panama
