Theissenia is a genus of fungi in the family Graphostromataceae.
[1] The genus was circumscribed by André Maublanc in Bull.
France vol.30 on page 51 in 1914.
The genus name of Theissenia is in honour of Ferdinand Theissen (1877–1919), who was a German-Austrian Jesuit priest and mycologist.
This Xylariales-related article is a stub.