Belongs to: flowering plants

Dog's mercury Mercurialis perennis

Best time to see: late Feb to late Apr

Key facts

A short plant, growing up to 30 cm high, with inconspicuous green flowers in spring

Spreads by underground rhizomes, often forming dense carpets in or on the margins of ancient woods or Green Lanes

Poisonous when eaten, but formerly applied externally to warts and sores

© Tony Gunton