North American Species of Crepidotus

Key to Subgenera

1. Clamp connections absent on the epicuticular hyphae of the basidiocarp (the hyphae of the gill trama, and including the base of the basidium)*
Subg. Crepidotus
1. Clamp connections present on the hyphae of the pileus cuticle, the gill trama hyphae, or at the base of the basidium
2. Spores globose to subglobose
Subg. Sphaerula
2. Spores typically longer than broad (ellipsoid, fusoid, ovoid, phaseoliform)

*Clamp connections may be present on the hyphae of the basal tomentum of this group.