Scleroconidioma sphagnicola gen.nov. et sp.nov. (Hyphomycetes) is described
from necrotic patches of Sphagnum fuscum (Schimp.) Klinggr. found in a bog
in Alberta, Canada. In the leaves of the host and in culture the fungus fo
rms minute dematiaceous stromata. Hyaline, bacilliform conidia are extruded
in succession from papillate conidiogenous cells that develop on the strom
a surface. Hyaline bacilliform conidia, as well as a more variable and pigm
ented conidial type, also arise from short conidiogenous cells or directly
from vegetative hyphae in culture. Discrete tufts of white, setiform hyphae
also form on agar media and constitute an additional distinctive feature o
f the new taxon.