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Rediscovery of Alnicola cholea (Cortinariaceae): taxonomic revision and description of its mycorrhiza with Polygonum viviparum (Polygonaceae)

     Laboratoire de Botanique, Faculté des Sciences pharmaceutiques et biologiques, Université Lille2, BP83, 3 rue du Professeur Laguesse, F-59006 Lille, France

Piotr Mleczko

     Institute of Botany, Jagiellonian University, Lubicz 46, PL-31-512 Kraków, Poland

Michal Ronikier
Anna Ronikier

     Institute of Botany, Polish Academy of Sciences, Lubicz 46, PL-31-512 Kraków, Poland

Alnicola cholea, a little-known species so far reported only from the two original localities in the French Alps, is redefined here based on revision of herbarium materials and studies of recent field collections. A detailed morphological and anatomical description of fruit bodies of Alnicola cholea, including a discussion on its taxonomic status and distribution data is provided. Due to the unique combination of characters of Alnicola cholea within the genus, a new monospecific section is introduced for this species: Alnicola sect. Cholea, sect. nov. Mycorrhizal symbiosis of A. cholea with an arctic-alpine plant Polygonum viviparum was observed in the Tatra Mountains (Poland). A description of these mycorrhizae is given, providing first detailed data on an identified herbaceous plant mycorrhiza.

Key words: Arctic-alpine fungi, Cortinariales, ectomycorrhizae, taxonomy