Violeta Atienza

Notes on the genus Polycoccum (Ascomycota, Dacampiaceae) in Spain, with a key to the species

Abstract Comments on and a key to the 13 Polycoccum species known in Spain are presented, including synopses of their world distributions. Amongst these is P. rubellianae sp. nov., a lichenicolous fungus growing on thalli of Caloplaca rubelliana in eastern Spain (Valencia). It has relatively small ascomata, the lower part pale brown, and also small ascospores which are coarsely verrucose and have a thick gelatinous sheath when young. The new species is associated with a Phoma -like anamorph. The identity and systematic position of P. opulentum requires further study as the name has been applied to different species, and the occurrence of P. marmoratum in Spain is in need of confirmation. The Spanish record of P. arnoldii on Lecania cyrtella probably refers to another yet undescribed species.

Epaphroconidia hawksworthii gen. et sp. nov., a new lichenicolous conidial fungus on Pertusaria pertusa in Spain

Epaphroconidia hawksworthii gen. et sp. nov., is described and illustrated for a conidial fungus, commensalistic rather than pathogenic, growing on the thallus of Pertusaria pertusa in Castello, eastern Spain. It is characterized by the formation of black conidiomata which are at first subglobose but which become cupulate with age. The conidiogenous cells, arising directly from the pycnidium wall, bear conidia enteroblastically through a minute pore in the outer wall. The conidia are holoblastic, large, globose, hyaline and aseptate. The separation of the new genus from Nigropuncta and Phoma is discussed.

Líquenes y hongos liquenícolas de la Serranía de Ronda (Málaga-Cádiz), sur de España

As a result of a field trip organised by the Spanish Lichen Society in Serrania de Ronda, south Spain, a catalogue of 360 taxa is presented (336 lichens, 24 lichenicolous fungi). The list includes three new records for the Iberian Peninsula: Arthonia paretinaria, Micarea myriocarpa and Niesslia keissleri , 51new ones for the Autonomous Andalusian Community, and three and 81 new ones for the province of Cadiz and of Malaga, respectively. After these results, the total updated number of the province of Malaga rises to 556 lichens and lichenicolous fungi. The best represented lichen genus is Cladonia (18) with the most species, unlike Lecanora (15), Pertusaria (12), Physconia (12) and Collema (9). As regard habitat, most lichen species are mainly corticolous (55%), as opposed to saxicolous (24%), terricolous (14%) as the species growing on other lichens as lichenicolous fungi (7%). The percentages of lichen growth forms are mainly foliose (50%) and crustose (31%), while fruticose (7%), crustose squamulose (6%) and dimorphic (6%) are less represented. The lichen wit