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Mycologia, 95(6), 2003, pp. 1204-1214.
© 2003 by The Mycological Society of America

Traditional infrageneric classification of Gymnopilus is not supported by ribosomal DNA sequence data


Laura Guzmán-Dávalos 1

     Departamento de Botánica y Zoología, Universidad de Guadalajara, Apartado postal 1-139, Zapopan, Jalisco, 45101, México

Gregory M. Mueller

     Department of Botany, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, Illinois 60605-2496

Joaquín Cifuentes

     Facultad de Ciencias, UNAM, Circuito Exterior, Ciudad Universitaria, México, D.F., 04510, México

Andrew N. Miller

     Department of Botany, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, Illinois 60605-2496

Anne Santerre

     Departamento de Biología Celular y Molecular, Universidad de Guadalajara, Zapopan, Jalisco, México

The traditional classification of Gymnopilus (Agaricales) recognizes two primary groups, Annulati and Gymnopilus, based on the presence or absence of a membranous partial veil. While our analyses of DNA sequence data from the nuclear ribosomal ITS1–5.8S-ITS2 (ITS) gene supports the monophyly of the genus, these traditional subgroups were not recovered. Five well-supported clades within the genus were identified through these analyses: 1) the spectabilis-imperialis group; 2) nevadensis-penetrans group; 3) a clade formed by G. underwoodii, G. validipes and G. cf. flavidellus; 4) aeruginosus-luteofolius group; and 5) lepidotus-subearlei group. Relationships among these subgroups were not resolved.

Key words: Agaricales, Annulati, Cortinariaceae, ITS, phylogeny, Strophariaceae




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