title: A new species of Lepiota from China.
abstract: In this report we describe the three species in Lepiota sect. Lepiota occurring in tropical China. Lepiota attenuata is a new species and is characterized by a pileus with brownish yellow squamules and radially sulcate striate margin, penguin-shaped spores that are distinctively narrowed toward the apex and inflated submoniliform or catenulate elements in the pileus covering. We compared the type specimens of L. metulispora and L. thrombophora with tropical Chinese specimens; both taxa occur in the study area. Phylogenetic relationships among the tropical Chinese species and other closely related species in the genus were inferred based on DNA sequences of the nuclear ribosomal genes (ITS, LSU and IGS) and the mitochondrial small ribosomal RNA gene (mtSSU).
authors.affiliation: Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China. fungi@mail.kib.ac.cn
authors.forename: Jun F
authors.initials: JF
authors.lastname: Liang
authors.forename: Zhu L
authors.initials: ZL
authors.lastname: Yang
authors.forename: Da P
authors.initials: DP
authors.lastname: Xu
mesh_terms: D000363:Agaricales / Q000145:classification* / Q000235:genetics* / Q000648:ultrastructure; D044822:Biodiversity; D002681:China; D004271:DNA, Fungal / Q000032:analysis; D004275:DNA, Ribosomal / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000032:analysis; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D013045:Species Specificity; D014329:Tropical Climate
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer