The species of the former Toninia coeruleonigricans group in Estonia
The Estonian specimens originally named Toninia coeruleonigricans auct. (= Toninia caeruleonigricans), formally revised as Toninia sedifolia were checked again recently. Two species, T. physaroides (Opiz) Zahlbr. and T. sedifolia (Scop.) Timdal were recognized. A key for determination of sterile specimens of the closely related taxa T. opuntioides (Vill.) Timdal, T. physaroides and T. sedifolia is provided.