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Steccherinum filiferum sp. nov. from the neotropics, and a new combination for Odontia laxa

Affiliation
Białystok University of Technology, Institute of Forest Sciences, Poland
Yurchenko, Eugene;
Affiliation
University of Oslo, Natural History Museum, Norway
Larsson, Karl-Henrik;
GND
1204034958
Affiliation
Julius Kühn Institute (JKI), Institute for Plant Protection in Horticulture and Urban Green, Germany
Riebesehl, Janett;
Affiliation
University of Helsinki, Finnish Museum of Natural History Luomus, Finland
Miettinen, Otto

The new species Steccherinum filiferum, from Puerto Rico and Amazonian rainforests of Ecuador, is described. It is characterized by effused basidiomata with hyphal cords, a monomitic hyphal system, simple-septate hyphae, and minute hymenophoral aculei with encrusted, septate, Candelabrochaete-like cystidia. Because Odontia laxa [≡ Odonticium laxum] is morphologically and phylogenetically similar to S. filiferum, the new combination Steccherinum laxum is proposed, after studying its type. Scanning electron microscopy studies show that S. filiferum and S. laxum can be differentiated by crystal size and arrangement on the cystidia. A key to the Steccherinum species with simple-septate generative hyphae is provided.

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