A comparative SEM study of morphological characters in Cribraria. MYCOTAXON 132 (2): 391-419.
Abstract—Cribraria spp. were examined by SEM to determine detailed morphological
features of the spore, nodes, and calyculus and to identify and describe the characters and
character states for each microstructure examined. The character states defined include
six for spore ornamentation (warted, crested, spiny, subreticulate, banded-reticulate,
grooved-reticulate), three for node types (rounded, enlarged, irregular), and four for the
upper calyculus margin (ribbed, irregular, toothed, entire). Our SEM studies show that
interpretations of spore ornamentation character states based solely on LM may be incorrect
and that SEM observations are crucial for discovering new characters and interpreting
taxonomic morphological features.
Key words—Cribrariaceae, morphology, myxomycetes, plasmodial granules, slime molds.