Scorpion-senna (Hippocrepis emerus) Hippocrepis emerus, the scorpion senna,] This is a species of perennial plant belonging to the genus Hippocrepis in the family Fabaceae. Hippocrepis emerus reaches on average 50–150 centimetres, with a maximum of 200 centimetres. The plant has a lignified stem with green branches bearing five to nine leaflets. This plant occurs in northeastern Spain and in central Mediterranean countries up to northern Europe and to Asia Minor. These shrubs are usually found in wooded and bushy areas, on sunny, warm and dry slopes and around forest edges. Sibillini, Umbria, Italy April 2020