Trechispora was introduced in 1890 by Finnish
mycologist Petter Karsten to describe a fragile, effused fungus with a poroid
hymenium and small, spiny basidiospores. His
type and only species,
T. onusta, is now known to be a synonym of the earlier name
Polyporus hymenocystis (=
Trechispora hymenocystis). Additional species with a similar micromorphology have subsequently been added to the genus. of
Scytinopogon The genus
Scytinopogon was introduced by
Rolf Singer in 1945 to accommodate tropical and subtropical fungi with
clavarioid basidiocarps having flattened branches and producing small, spiny to warty basidiospores.
Molecular research, based on
cladistic analysis of
DNA sequences, has however shown that
Scytinopogon species are nested within
Trechispora (which they resemble microscopically) and are consequently not a separate genus but are simply
Trechispora species with clavarioid basidiocarps. ==Species==