The variety Reniera alba var. pontica has only a single forma, so that would be the typical forma and it is not ... [details]
There are two species named as Pellinula in Czerniavsky (1880), viz. cribrosa and schmidtii, but cribrosa bears a ... [details]
The forma was described by Czerniavsky from Novorossijsk, Russian Black Sea coast, approximate coordinates 44.68°N ... [details]