Palaeosclerotium, a Pennsylvanian Age Fungus Combining Features of Modern Ascomycetes and Basidiomycetes

See allHide authors and affiliations

Science  02 Apr 1976:
Vol. 192, Issue 4234, pp. 66-68
DOI: 10.1126/science.192.4234.66


Fruiting bodies described previously as sclerotia of Palaeosclerotium pusillum are cleistothecium-like, enclosed structures, containing spores within an ascus. The cleistothecia are composed of hyphae having dolipore-like septa and are attached to vegetative hyphae having clamp connections. The unique combination of ascomycete-like reproductive bodies and basidiomycete-like hyphae present in this Pennsylvanian fungus suggests that there already existed, during the Middle Pennsylvanian period, a group of fungi intermediate between the Ascomycetes and Basidiomycetes.