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Hymenoscyphus subcarneus, a little known bryicolous discomycete found in the Bialowieza National Park

100%

Baral H. O., Krieglsteiner L.

Acta Mycologica

2006

tom 41

nr 1

The discomycete Hymenoscyphus subcarneuswas found to grow parasitic on the liverwort Cephalozia catenulatain the Białowieża National Park (Poland), and is described and illustrated from the fresh collection. Two characters, the ascus apical ring structure of the Calycinatype and the contents of the living paraphyses (multiguttulate by low-refractive vacuolar bodies), have not been reported previously. In addition, a dried collection on Pohlia gracilis from Switzerland, Grimsel area, was studied. The relationship, taxonomy and infraspecific variation of the fungus are discussed. A new genus, Roseodiscus, is established to accomodate this bryicolous fungus together with two very similar equiseticolous species, Hymenoscyphus rhodoleucusand H. equisetinus. The three species are macroscopically characterized in the fresh state by a pale rosaceous-lilaceous hymenium and a mostly slender, concolorous or whitish stipe. Roseodiscusresembles Hymenoscyphusin various respects, but sharply deviates in the apical ring type which appears to indicate a more close relationship with genera like Calycinaor Stamnaria. Rhizoscyphus ericaewhich forms a mycorrhiza with roots of Ericaceae, is compared with Roseodiscus. Based on vital observations of R. ericaethis species is believed to be congeneric with the type of Pezoloma, P. griseum.

Ograniczanie wyników

1 Acta Mycologica

1 Baral H. O.

1 Krieglsteiner L.

1 2006

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Hymenoscyphus subcarneus, a little known bryicolous discomycete found in the Bialowieza National Park