This book describes the species of the order Dothideales (bitunicate Ascomycetes) with dictyospores, i.e. spores with transverse and longitudinal septa.
A key of Iberian species for each genus studied is included. The macro- and microscopic descriptions of the species are based on Iberian material, except of the pseudoparaphyses which correspond with the genus.

En este volumen se describen las especies del orden Dothideales (Ascomycetes con ascos bitunicados, según Hawksworth & al., 1995) que presentan dictiósporeas, es decir, esporas con septos transversales y longitudinales.
Se aporta una clave de especies ibéricas para cada género estudiado. Las descripciones macro- y microscópicas de las especies se han basado en material ibérico, obviándose en est último caso las pseudoparáfisis, ya que se corresponden con las del género.

The volume is fully bilingual, giving the same information both in Spanish and English. This no doubt will add to the user-friendliness of the series.

The treatment is modern, with concise descriptions, keys to all taxa treated and line drawings of Iberian material of all studied species. The book treats all bitunicate pyrenocarps with muriform ascospores known from Spain and Portugal, with the exception of the lichenized ones and some non-lichenized relatives like Requienella seminuda. The species concepts of Barr are generally followed and relatively narrow generic concepts as proposed by e.g. Crivelli are applied. No taxonomic novelties are published.

Pyrenocarpous ascomycetes tend to be widespread as a result of their tiny but rather resistant diaspores, and most genera and even species treated here from the Iberian peninsula are also known from other areas in mediterranean Europe and Asia or even from the temperate regions worldwide. Therefore this treatment is of great value to students and specialists identifying Dothideales from virtually all over the world.

ANDRÉ APTROOT, Utrecht

Nova Hedwigia vol. 79/3-4