SEM studies of the Myxomycetes from the Peninsula of Baja California (Mexico), I. Arcyria to Fuligo

In two papers, of which this is the first, the authors present a macro- and microscopic study of 45 Myxomycetes collected on the Peninsula of Baja Cal ifornia, Mexico. This part treats 24 species, in alphabetical order, from A rcyria affinis Rostaf. to Fuligo septica (L.) F. H.Wigg. SEM photographs of spores and capillitial threads are provided. The following taxa are report ed as new to Mexico: Arcyria affinis Rostaf., A. minuter Buchet, Craterium scyphoides (Cooke & Balf) Lizarraga, Illana gr G. Moreno, and Dictydiaethal ium plumbeum var. cinnabarinum (Berk. & Pr.) Shirai & Hara. We propose the following new combination: Craterium scyphoides (Cooke gr Balf) Lizarraga, Illana & G. Moreno.