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Mycologia, 95(2), 2003, pp. 347-353.
© 2003 by The Mycological Society of America

New species causing decay on living Polylepis australis in Córdoba, central Argentina


Gerardo Robledo 1
Carlos Urcelay

     Instituto Multidisciplinario de Biología Vegetal, Universidad Nacional de Córdoba, C.C. 495, 5000 Córdoba, Argentina

Mario Rajchenberg 2

     Área de Protección, Centro de Investigación y Extensión Forestal Andino Patagónico, C.C. 14, 9200 Esquel, Chubut, Argentina

Two new species of poroid Hymenochaetaceae (Aphyllophorales, Basidiomycota) are described and illustrated. They were causing decay on living and standing dead Polylepis australis ("tabaquillo" or "queñoa") in the Córdoba Mountains in central Argentina. Inonotus serranus is characterized by a biannual basidiocarp, with a dark line separating tomentum from context; ellipsoid to ovoid, thick walled, colored spores; and the absence of setae. Phellinus uncisetus is characterized by uncinate setae with ventricose uniradicate base and well-differentiated apical portion; a basidiocarp attached by a narrow area to the substrate; ventricose, hyaline cistidioles; and by subglobose, hyaline spores, with very thick walls. The identity of Phellinus setulosus is discussed.

Key words: Hymenochaetaceae, Inonotus serranus, Phellinus setulosus complex, Phellinus uncisetus




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