Clavulinopsis Overeem 

A genus among the clavarioid fungi that comprises 33 species distributed worldwide (Kirk et al. 2008). The species are usually terrestrial, rarely lignicolous, solitary or gregarious, and characterized by white, yellow, orange or red, simple or branched basidiomata; hyaline or slightly yellow, globose or ellipsoid basidiospores, usually smooth, but echinulate in some species, and tramal hyphae and basidia with clamp connections (Corner 1950, 1970; Petersen 1978). However, the circumscriptions of Clavulinopsis sensu Corner (1950, 1970) and Petersen (1978) were not supported by Birkebak et al. (2013).