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Título

Geastrum pleosporus sp. nov., a new species of Geastraceae identified by morphological and molecular phylogenetic data

Autor Douanla-Meli, Clovis; Langer, Ewald; Calonge, Francisco D.
Palabras clave Earthstar
Fibrilose-gleba
LSU rDNA
Lycoperdales
Mycosclereids
Peridium
Polymorphous spores
Subiculum
Fecha de publicación 2005
EditorGerman Mycological Society
Citación Mycological Progress 4(3) : 239-250 (2005)
Resumen[EN] 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, constricted to eight-shaped, mostly oblong, ovoid, cylindrical, elliptic to clubshaped basidiospores. 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 is investigated. In parsimony analyses of partial sequences of the large subunit rDNA from selected Gasteromycetes species, G. pleosporus is closely related to G. saccatum within the strongly supported clade of Geastrum species. The cluster of G. pleosporus and G. saccatum is well supported in parsimony analysis of the dataset with Geastrum species and related taxa using parsimony and maximum likelihood analysis.
Versión del editorhttp://link.springer.com/article/10.1007/s11557-006-0127-3
URI http://hdl.handle.net/10261/91826
ISSN1617-416X
E-ISSN1861-8952
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