Showing papers by "Marcelo Pinto Marcelli published in 2013"

Ten new species of lichenized Basidiomycota in the genera Dictyonema and Cora (Agaricales: Hygrophoraceae), with a key to all accepted genera and species in the Dictyonema clade

Abstract: As part of a larger systematic and taxonomic revision, including molecular phylogenetic analysis, of lichenized Basidiomycota in the Dictyonema clade, ten species are described as new from tropical America, seven in the foliose genus Cora and three in the filamentous genus Dictyonema : Cora arachnoidea J. E. Hern. & Lucking, sp. nov. , C. aspera Wilk, Lucking & E. Morales, sp. nov. , C. byssoidea Lucking & Moncada, sp. nov. , C. cyphellifera Dal-Forno, Bungartz & Lucking, sp. nov. , C. inversa Lucking & Moncada, sp. nov. , C. squamiformis Wilk, Lucking & Yanez-Ayabaca, sp. nov. , C. strigosa Lucking, E. Paz & L. Salcedo, sp. nov. , Dictyonema aeruginosulum Lucking, Nelsen & Will-Wolf, sp. nov. , D. diducens Nyl. ex Lucking, sp. nov. , D. metallicum Lucking, Dal-Forno & Lawrey, sp. nov. , and D. obscuratum Lucking, Spielmann & Marcelli, sp. nov. We discuss the taxonomic status of the six names historically established for species belonging in the genus Cora and reinstate the names C. gyrolophia Fr., C. pavonia (Sw.) Fr., and C. reticulifera Vain., providing diagnostic features for these, whereas the status of C. glabrata (Spreng.) Fr. and C. bovei Speg. remains uncertain. The following new combinations are introduced: Cora hirsuta (Moncada & Lucking) Moncada & Lucking, comb. nov., C. minor (Lucking, E. Navarro & Sipman) Lucking, comb. nov. , Corella melvinii (Chaves, Lucking & Umana) Lucking, Dal-Forno & Lawrey, comb. nov ., Cyphellostereum phyllogenum (Mull. Arg.) Lucking, Dal-Forno & Lawrey, comb. nov. , Dictyonema caespitosum (Johow) Lucking, comb. nov. , D. irrigatum (Berk. & M. A. Curtis) Lucking, comb. nov. , D. phyllophilum (Parmasto) Lucking, Dal-Forno & Lawrey, comb. et stat. nov. , and D. scabridum (Vain.) Lucking, comb. et stat. nov. Keys are presented to the five currently accepted genera and 40 currently recognized species in the genera Cyphellostereum , Dictyonema , Cora , and Corella .

A revision of Leptogium species with spherical-celled hairs (section Mallotium p.p.)

Abstract: The group of Leptogium species with spherical-celled hairs (i.e., sect Mallotium) is revised and identification keys for fertile and sterile specimens are provided based on morphological and anatomical characteristics. Apothecial tissues are important in species differentiation and are related to the type of columnar hyphae of the thallus. Mallotium species can be readily differentiated by the surface morphology, architecture of the hairs, the type and distribution of isidia and lobules, the columnar hyphae, and features of apothecial tissues. The thallus of L. inflexum lacks marginal lacinulae, but was retained in synonymy with L. burgessii, whereas L. ethiopicum was distinguished from L. burgessii. Leptogium nylanderi is a new name for L. inflexum var. isidiosulum. The new species L. mantiqueirense is described from southeastern Brazil.

Five supposedly well-known species of Leptogium section Mallotium

Abstract: The revision and detailed description of type specimens of five supposedly well-known hairy Leptogium species revealed taxonomically relevant new data. Both holotype and isotype of L. capense are a mixture of species and a new lectotype is designated. A new isotype of L. decipiens was found at E. The protologue of L. inversum mentioned marginal apothecia but the holotype has just laminal and sub-marginal apothecia. The lectotype duplicate of L. resupinans is not really a fragment of the lectotype and must be considered as syntype. The apothecia of L. scrobiculatum are described for the first time.

Cianoliquens dos gêneros Coccocarpia, Collema e Leptogium do Parque Estadual da Cantareira, SP, Brasil, depositados no herbário SP

Abstract: - (Cyanolichens of genera Coccocarpia , Collema , and Leptogium from Parque Estadual da Cantareira, Sao Paulo State, Brazil, deposited in the SP herbarium). The survey of the foliose lichen specimens of the Parque Estadual da Cantareira and vicinities, deposited at the SP herbarium, revealed 14 cyanolichen specimens, belonging to seven species of the genera Coccocarpia , Collema , and Leptogium . This is the first record of these species for the area, and includes an identification key, descriptions, comments, and illustrations. Collema fuscovirens is recorded for the first time to South America, Leptogium coralloideum is recorded for the first time to Sao Paulo State, and a lectotype is selected for L. austroamericanum .Key words: Ascomycota, lichenized fungi, Serra da MantiqueiraRESUMO - (Cianoliquens dos generos Coccocarpia , Collema e Leptogium do Parque Estadual da Cantareira, SP, Brasil, depositadas no herbario SP). O levantamento de especimes de liquens foliosos do Parque Estadual da Cantareira e arredores depositados no herbario SP inclui 14 especimes de cianoliquens, pertencentes a sete especies dos generos

A new non-isidiate Leptogium species with transverse septate ascospores from Southeastern Brazil

Abstract: A non-isidiate Leptogium species with transverse septate ascospores is described as new. The species was collected in Serra da Mantiqueira and initially identified as L. megapotamicum, but the study of the type specimen demonstrated differences in the tissues of the apothecia, which supported the observed morphological variations of the thalli and apothecia found by our descriptive protocol.