Gomphonema alavariense sp. nov. (Cymbellales, Gomphonemataceae) from an urban pond

Analysis of the type specimens of Fragilaria alpestris (Bacillariophyta) with description of two new ‘araphid’ species from the sub-Antarctic and Arctic Region

Biological soil crusts: new genera and species of Cyanobacteria from Brazilian semi-arid regions

Diatom genus Planothidium (Bacillariophyta) from streams and rivers in California, USA: diversity, distribution and autecology

Taxonomy, valve ultrastructure, nomenclature and a comparison of two species of Bacillariales from freshwaters of Puerto Rico

Morphological investigation and description of two new Gomphonema Ehrenberg (Bacillariophyta) species from India and Vietnam with biogeographical comments

Two new species of genus Mallomonas from swamp localities in Vietnam

Analysis of the type material of Synedra perminuta (Bacillariophyceae) with the description of two new Fragilaria species from Sweden

Sarcopeltis gen. nov. (Gigartinaceae, Rhodophyta), with S. skottsbergii comb. nov. from southern South America and S. antarctica sp. nov. from the Antarctic Peninsula

Description of Placoneis mologaensis, a new diatom from the Rybinsk reservoir on the Volga River, European Russia