@ARTICLE{TreeBASE2Ref15294, author = {Clovis Douanla-Meli and Ewald Langer and Francisco D. Calonge}, title = {Geastrum pleosporus sp. nov., a new species of Geastraceae identified based on morphological and molecular phylogenetic data from Cameroon}, year = {2004}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Mycological Progress}, volume = {}, number = {}, pages = {}, abstract = {An unusual species of Geastrum was found growing on decayed wood debris and leaves of Triplochiton scleroxylon in the Mbalmayo Forest Reserve, Cameroon. The species morphologically resembles G. saccatum and G. fimbriatum in having sessile endosperidium partly enclosed by the saccate base of the exoperidium. Microscopically, it is characterized by and distinguished from all other known species of the genus, in having subsmooth, punctate to moderately verruculose, slightly thick- to distinctly thick-walled polymorphous basidiospores, deeply constricted to eight-shaped, mostly oblong, ovoid, cylindrical, elliptic, reniform to club-shaped. G. pleosporus was studied from a collection of about fifteen basidiomata covering different stages of development. It is described as new based on morphological analyses and phylogenetic inferences made from large ribosomal DNA sequence alignments. Phylogenetic relationship of G. pleosporus was investigated, in parsimony analyses of partial sequences of the large subunit rDNA of selected Gasteromycetes species, G. pleosporus is closely related to G. saccatum within the strongly supported clade of Geastrum species. The monophyly of G. pleosporus and G. saccatum is well supported in parsimony analysis of dataset of Geastrum and related taxa using parsimony analysis and maximum likelihood.} }

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