ID/Diagnostic: Morphological
Morphological:
A. To confirm the presence of the pathogen, orange-yellow sapwood or white mycelium should be placed on semi-selective MAT medium (15 g agar, 10 g malt, 250 mg thiabendazole, 100 mg penicillin, 100 mg streptomycin, and 1 L distilled water).
B. The cultural and morphological characteristics of the basidiomes of the fungus are examined and compared.
Halling (2004) provides a useful key to confirm the genus Gymnopus.
In Progress / Literature-based Diagnostics:
Recent molecular evidence supports the placement of Collybia fusipes within the genus Gymnopus (Antonin et al., 1997). The placement of C. fusipes within Gymnopus, however, is not universally accepted and several authors continue to use Collybia fusipes.