New Zealand Journal of Botany abstracts

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The taxonomic identity of Gymnopilus rubrocastaneus recently described from New Zealand

David A. Orlovich
Anne-Maree B. Oliver

Department of Botany
The University of Otago
P.O. Box 56
Dunedin, New Zealand
Email: david.orlovich@botany.otago.ac.nz

Abstract   Based on the re-examination of type material of Gymnopilus rubrocastaneus, the new combination Cortinarius rubrocastaneus is proposed. Morphological and genetic analysis demonstrated that G. rubrocastaneus does not belong to Gymnopilus but represents a species of Cortinarius closely related to the Northern Hemisphere species C. limonius. The two taxa differ by having a fasciculate growth habit, darker chestnut-red pilei, smaller basidiospores (7.1 x 5.5 µm), more slender basidia (30.1 x 6.8 µm), and more slender marginal cells (28.9 x 7.3 µm).

Keywords   fungi; New Zealand; Nothofagus; Cortinariaceae; Cortinarius; Gymnopilus; phylogenetic analysis; ITS region

B01053 Received 24 October 2001; accepted 27 May 2002; published 11 September 2002
New Zealand Journal of Botany, 2002, Vol. 40: 481-487
0028-825X/02/4003-0481 $7.00 © The Royal Society of New Zealand 2002

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