title: A new species of Lactarius (subgenus Gerardii) from two relict Fagus grandifolia var. mexicana populations in Mexican montane cloud forests.
abstract: A new milkcap species, Lactarius fuscomarginatus, was found in the subtropical region of central Veracruz (eastern Mexico) associated with two relict populations of Fagus grandifolia var. mexicana. The species is characterized macroscopically by its dark pileus and stipe and by its distant and whitish lamellae with blackish to blackish brown edges. A molecular phylogenetic analyses based on ITS and LSU nucDNA sequences confirms the delimitation of this new taxon and places L. fuscomarginatus in subgenus Gerardii. A detailed morphological comparison is given with similar species.
authors.affiliation: Biodiversidad y Sistemática, Instituto de Ecología, Xalapa, Veracruz, México. leticia.montoya@inecol.edu.mx
authors.forename: Leticia
authors.initials: L
authors.lastname: Montoya
authors.forename: Victor Manuel
authors.initials: VM
authors.lastname: Bandala
authors.forename: Ingeborg
authors.initials: I
authors.lastname: Haug
authors.forename: Dirk
authors.initials: D
authors.lastname: Stubbe
mesh_terms: D000363:Agaricales / Q000145:classification* / Q000235:genetics / Q000648:ultrastructure; D001483:Base Sequence; D004271:DNA, Fungal; D021903:DNA, Ribosomal Spacer; D029964:Fagus / Q000382:microbiology*; D008800:Mexico; D008969:Molecular Sequence Data; D038821:Mycorrhizae / Q000145:classification / Q000166:cytology; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D013172:Spores, Fungal / Q000648:ultrastructure; D014197:Trees / Q000382:microbiology; D014329:Tropical Climate
chemical_list: D004271:DNA, Fungal; D021903:DNA, Ribosomal Spacer