Taxonomy and ultrastructure of Sinerima, a new genus of diatoms (Bacillariophyta), with a description of a new species, S. marigela

Helicascus alatus (Morosphaeriaceae), a new freshwater species from southwestern China

A multivariate analysis of the Pitcairnia palmeri group (Bromeliaceae: Pitcairnioideae)

Gomphosphenia plenkoviciae sp. nov. A new species from Crveno jezero, Croatia

Revision of the type material of Diploneis zannii Frenguelli (Bacillariophyceae)

Validation of the name Heliotropium shirazicum (Heliotropiaceae)