A new species of Penicillium from soil: P. coalescens,sp. nov.

A new species of Penicillium Link ex Gray nom. cons. prop. is described and illustrated. It has been recovered from sandy soil under conifers near Valladolid (Spain). This species is classified, according to Pitt's System, into Sect. Coremigenum (Biourge) Pitt, comb. nov. and Ser. Dendritica Pitt, ser. nov. of the Subgen. Biverticillium Dierckx, because of its characteristically biverticillate penicilli and its ability to produce coremia after somewhat extended incubation under diffuse natural light. It is clearly different from species described so far and is, therefore, proposed as new taxon: P. coalescens, sp. nov.