A well-preserved Bowmanites cone is described from the McLeansboro group (upper Pennsylvanian) of Berryville, Illinois. The fossil is a small homosporous cone, about 3 mm. in diameter, and consists of seventeen whorls of appendages. Each whorl consists of six bracts, above which are borne six pairs of sporangia, each attached at its distal end to a recurved forking sporangiophore. The vascular system of the axis is a small triarch structure. The epidermal cell walls of the bracts are strongly sinuous and those of the sporangia slightly so. The spores are monolete and smooth walled.
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Andrews et al. (1951) studied this question.
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