New species of Pseudostaurosira (Bacillariophyceae) including a tripolar taxon from mountain streams of Central Mexico

Molecular assessment of the genus Sargassum (Fucales, Phaeophyceae) from the Mexican coasts of the Gulf of Mexico and Caribbean, with the description of S. xochitlae sp. nov.

Cosmarium tutum nom. nov. a new name for Cosmarium perforatum var. skujae (Charophyta, Desmidiaceae), a rare taxon newly found in Ukraine

An updated species inventory of Callithamnion sensu lato Rhodophyta, Callithamniaceae in South Africa with the description of Callithamnion africanum sp. nov.

Batrachospermum qujingense (Batrachospermales, Rhodophyta), a new freshwater red algal species from Southwest China

Placoneis cattiensis sp. nov.—a new, diatom (Bacillariophyceae: Cymbellales) soil species from Cát Tiên National Park (Vietnam)

Notes on the diatom collection of the Natural History Museum, London (BM) I: The first place of publication for Cymatopleura brunii P. Petit, a review of its type specimens with a note on the name Surirella undata

Ctenophora sinensis: a new diatom species (Bacillariophyta) from China with comments on its structure, nomenclature and relationships

Gelidium gonzalezii sp. nov. (Gelidiales, Rhodophyta) from the Mexican tropical Pacific based on molecular and morphological evidence

Brachysira aristidesii sp. nov. (Bacillariophyceae, Brachysiraceae): a new species from oligotrophic and mesotrophic tropical reservoirs in southeastern Brazil