Hallo Ingo,
am besten setze ich gleich direkt ein Zitat aus der Arbeit von Ripková et al. (2010):
"Petersen et al. (2009) distinguished F. elastica, a species
phylogenetically related to F. velutipes, as differing from F.
velutipes by the ratio of length and width of spores (Q=
2.5–3). All our collections had a Q value up to 2.2 and,
following the concept of Petersen et al. (2009), they were
morphologically assigned to F. velutipes. However, 2 of 12
collections morphologically determined as F. velutipes had
sequences that corresponded to F. elastica as defined by
blast sequence homology and by sequence alignments with
known exemplars. Discrepancies in morphological and
molecular delimitation of F. velutipes and F. elastica
suggest that a critical revision of the current morphological
concept of F. elastica is needed and, for this reason, we
treat both species as the F. velutipes complex in the text/key
below."
Schöne Grüße
Gernot