A NOMENCLATURAL NOTE ON THE LATE PALAEOZOIC GENUS CYCLOSTIGMA(LYCOPSIDA)
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Abstract:
The outstanding nomenclatural problems in the Palaeozoic arborescent lycopsid Cyclostigma are discussed,which include four aspects:1)valid publication and author citation of Cyclostigma;2)synonym,homonym,and replacement name of Cyclostigma;3)conservation of Cyclostigma;and 4)typification of Cyclostigma.Based on the literature and the International Code of Botanical Nomenclature,these nomenclatural problems are clarified.Heer was the first to validly publish the generic name Cyclostigma in 1871,and thus it s...
