Taxon Details: Heimioporus betula (Schwein.) E.Horak
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Family:

Boletaceae (Basidiomycota)
Scientific Name:

Heimioporus betula (Schwein.) E.Horak
Primary Citation:

Heimioporus E. Horak gen. nov. - replacing Heimiella Boedijn (1951, syn. post., Boletales, Basidiomycota).
Sydowia 56: 239. 1980
Accepted Name:

This name is currently accepted.
Description:

Registration number: MB368305

Distribution: The taxon appears to be distributed from E USA to Oaxaca, Mexico. Heimioporus alveolatus described from Mexico is a synonym.

Commentary: The spore ornamentation is manifested generally as circular to semicircular pits that occasionally coalesce. The apex is eroded and is often described erroneously (from light microscope observations) as a 'germ pore.' The spores can appear somewhat truncated however.