Urnula rhytidia (Berk.) Cooke, un raro discomicete ( Pezizales , Ascomycotina ), hallado en las Villuercas (Cáceres)

Urnula rhytidia, a rare Discomycete ( Pezizales, Ascomycotina ), collected in Las Villuercas (Caceres, W Spain). A rare ascomycete, Urnula rhy tidia, typically (but not always) associated with Eucalyptus litter, is thoroughly described, illustrated and discussed; its distribution, which is here summarised, is confined to isolated areas in different countries. The latter was reported in Spain once again. The authors afford new information to their previous taxonomic treatments, mainly enlarging the synonimic list. Finally, the curious ornamentation pattern of the spores is showed at S. E. M.