Reassessment of Indigofera pratensis var. coriacea Domin and var. angustifoliola Domin (Fabaceae: Faboideae) with the recognition of a new species

Abstract

The two varieties of Indigofera pratensis described by Karel Domin are reassessed. Indigofera pratensis var. coriacea is distinct from the widespread Indigofera pratensis sens. str. in a number of reproductive and vegetative characters and is here raised to specific rank as Indigofera scabrella. Indigofera pratensis var. angustifoliola is judged to be an environmental or rare geographic variant of Indigofera pratensis sens. str. and not worthy of continued recognition. Lectotypes are designated for both names.