0000000001320981
AUTHOR
David L. Hawksworth
showing 6 related works from this author
Notes on the genus Polycoccum (Ascomycota, Dacampiaceae) in Spain, with a key to the species
2003
AbstractComments 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 …
Lichenothelia renobalesiana sp. nov. (Lichenotheliaceae), for a lichenicolous ascomycete confused with Polycoccum opulentum (Dacampiaceae)
2008
Abstract:The name Polycoccum opulentum proves to have been wrongly applied to a lichenicolous fungus belonging to the genus Lichenothelia, and which differs from the type material of P. opulentum in having non-ostiolate broadly stipitate ascomata and narrow ascospores with a conspicuous gelatinous sheath. The Lichenothelia represents an hitherto undescribed species, named here as L. renobalesiana, sp. nov. which is associated with verrucarialean lichens on hard limestones in temperate regions. The true P. opulentum is known only from the original collection on Polyblastia hyperborea from Sweden.
Minutoexcipula tuckerae gen. et sp.nov., a new lichenicolous deuteromycete on Pertusaria texana in the United States
1994
The new deuteromycete genus and species Minutoexcipula tuckerae is described and illustrated from five collections on Pertusaria texana made in Louisiana. It is characterized by the formation of black convex sporodochia-like conidiomata which also have a well-differentiated exciple. The branched conidiophores bear proliferating holoblastic conidiogenous cells with distinct annellations, and the singly borne conidia are brown and 1-septate. The separation of the genus from Lichenopuccinia, Milospium, Monodictys, Sclerococcum, and Trimmatostroma is discussed. Notes on other brown-spored deuteromycetes known on Pertusaria are also included, together with a key to the nine currently known speci…
Verrucoccum (Dothideomycetes, Dictyosporiaceae), a new genus of lichenicolous fungi on Lobaria s. lat. for the Dothidea hymeniicola species complex
2021
Two lichenicolous fungi, one growing on the thallus of Lobaria pulmonaria in the United Kingdom (Scotland) and the other in apothecia of Lobaria linita and L. oregana in northwestern North America (Alaska and British Columbia) and northeast Asia (Russian Far East, Khabarovsk Krai), show similarities to the species originally described as Dothidea hymeniicola (later transferred to Polycoccum s. lat and Endococcus) from a Lobaria s. lat. species in Central America. Critical morphological comparison showed that, despite the superficial resemblance between Alaskan, Canadian, Russian, and Scottish collections and the holotype of Dothidea hymeniicola, they can be distinguished by detailed microsc…
Phylogenetic generic classification of parmelioid lichens (Parmeliaceae, Ascomycota) based on molecular, morphological and chemical evidence
2010
WOS: 000285566000008
Verrucoccum (Dothideomycetes, Dictyosporiaceae), a new genus of lichenicolous fungi on Lobaria s. lat. for the Dothidea hymeniicola species complex
2021
Two lichenicolous fungi, one growing on the thallus of Lobaria pulmonaria in the United Kingdom (Scotland) and the other in apothecia of Lobaria linita and L. oregana in northwestern North America (Alaska and British Columbia) and northeast Asia (Russian Far East, Khabarovsk Krai), show similarities to the species originally described as Dothidea hymeniicola (later transferred to Polycoccum s. lat and Endococcus) from a Lobaria s. lat. species in Central America. Critical morphological comparison showed that, despite the superficial resemblance between Alaskan, Canadian, Russian, and Scottish collections and the holotype of Dothidea hymeniicola, they can be distinguished by detailed microsc…