Mercurialis perennis (Dog's Mercury) is a species of perennial herb in the family Euphorbiaceae. They have a self-supporting growth form. They have simple, broad leaves. Flowers are visited by Tawny Mining Bee, Cheilosia pagana, Eristalis lineata, and Portevinia maculata. Individuals can grow to 0.2 m.
EOL has data for 25 attributes, including: