Is the species diversity in the lyophylloid genera Calocybella and Gerhardtia (Agaricales, Basidiomycota) underestimated? Two new species from the Dominican Republic

Navicula amoyensis sp. nov. (Bacillariophyceae), a new benthic brackish diatom species from the Jiulong River estuary, Southern China

Two new species of Eriope (Lamiaceae) from Goiás state, Brazil

Pitcairnia singularis (Pitcairnioideae, Bromeliaceae), a new species from Jalisco, Mexico

Ardisia gasingoides (Primulaceae-Myrsinoideae), a new species from southern Peninsular Malaysia

A clarification of the name Carex hypsipedos C.B.Clarke (Cyperaceae) and a new name for the South American Carex section Acrocystis taxon

Pleione arunachalensis (Orchidaceae: Epidendroideae: Arethuseae: Coelogyninae), a new species from North-East India

Seminavis norae comb. nov. is the correct name for Seminavis recta