Lathyrus pisiformis (Pisiform Grass Pea) has to be counted among the most endangered species in the Czech Republic, with only two recent localities in the central part of Bohemia. In the past, the species was found at one other site – in the pheasantry near Budeničky (north of the town of Slaný), but this population is now extinct. and Michal Štefánek.