期刊
MYCOTAXON
卷 121, 期 -, 页码 393-403出版社
MYCOTAXON LTD
DOI: 10.5248/121.393
关键词
Agaricomycetes; Physalacriaceae; /gloiocephala clade; phylogeny; taxonomy
类别
Laccariopsis (Agaricales) is a new monotypic genus established for Hydropus mediterraneus, an arenicolous species earlier often placed in Flammulina, Oudemansiella, or Xerula. Laccariopsis is morphologically close to these genera but distinguished by a unique combination of features: a Laccaria-like habit (distant, thick, subdecurrent lamellae), viscid pileus and upper stipe, glabrous stipe with a long pseudorhiza connecting with Ammophila and Juniperus roots and incorporating plant debris and sand particles, pileipellis consisting of a loose ixohymeniderm with slender pileocystidia, large and thin- to thick-walled spores and basidia, thin- to slightly thick-walled hymenial cystidia and caulocystidia, and monomitic stipe tissue. Phylogenetic analyses based on a combined ITS-LSU sequence dataset place Laccariopsis close to Gloiocephala and Rhizomarasmius.
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