Mycological Research



DNA studies in the Galerina marginata complex


Gro GULDEN a1, Susie DUNHAM a2 and John STOCKMAN a3
a1 Natural History Museum and Botanical Garden, University of Oslo, Sarsgt. 1, N-0562 Oslo, Norway
a2 Oregon State University, Department of Forest Science, 3200 SW Jefferson Way, Corvallis, OR 97331, USA
a3 USDA Forest Service, Pacific Northwest Research Station, 3200 Jefferson Way, Corvallis, OR 97331, USA

Abstract

The distinctiveness of the European Galerina marginata and the American G. autumnalis is tested with analyses of DNA sequences from the internal transcribed spacer (ITS-2) of the nuclear ribosomal repeat and RFLP analysis of the entire ITS region. European and North American material from six taxa described in Galerina subgenus Naucoriopsis are included along with out-group material of six taxa representing two other subgenera of Galerina. The results do not indicate any genetic difference between species by Smith & Singer (1964) referred to the two ‘stirpes’ Marginata and Autumnalis of Naucoriopsis, i.e. G. autumnalis, G. marginata, G. oregonensis, G. pseudomycenopsis, G. unicolor, and G. venenata and all except G. pseudomycenopsis are considered later synonyms of G. marginata. Galerina badipes (syn. G. cedretorum var. bispora of ‘stirps’ Cedretorum is well supported as a distinct species. Subgenus Naucoriopsis appears as a distinct infrageneric unit well separated from the infrageneric units represented by the out-group species.

(Received April 6 2000)
(Accepted October 1 2000)