Podostroma alutaceum
Podostroma alutaceum
Podostroma alutaceum
Podostroma alutaceum
Podostroma alutaceum
Found in July growing from the roots of a fallen
American beech tree.
INDIANA MUSHROOMS
Podostroma alutaceum asci with ascospores
Asci with spores.
(Perithecia completely broken away
during slide preparation.)
Cross-section of stroma showing perithecia.  
Asci, the spore producing cells, develop
within these walled chambers.
Top views of stroma showing small pores (ostiole) where spores are
released from the perithecia.
Podostroma alutaceum
Podostroma alutaceum
Podostroma alutaceum belongs to a class of fungi known as Ascomycetes,
the sac fungi; and to a particular group called flask fungi
(pyrenomycetes), which includes
Xylaria and Cordyceps species.  These
fungi develop tiny fruiting bodies (perithecia) that are embedded in what
George Barron calls "a massive fungus matrix", the stroma.