Dryopteris carthusiana var. enigmatica var. nov., a new taxon from Finland

Authors

• Harri Harmaja

Abstract

The new variety Dryopteris carthusiana var. enigmatica Harmaja (Dryopteridaceae) is described on the basis of a collection from rich brook side forest in southern Finland. Var. enigmatica differs from var. carthusiana through the smaller fronds, sori, sporangia and spores, the shorter stomata, and a different perispore. The size of the spores and the length of the stomata of var. enigmatica suggest that the taxon might be diploid.