Celandine

Chelidonium majus
A perennial herb with branching stems that grow to 2 1/2 feet high and swell at the nodes. Smooth, deeply divided leaves with lobed leaflets spread alternately along the lower stem. The flowers (April-September) are bright yellow. When any part of the plant is broken, it exudes an acrid, sticky orange juice with an unpleasant smell.

Black Locust

Robinia pseudoacacia
Black locust – a deciduous tree 60-80 feet tall, with a thick, deeply furrowed, dark brown bark and crooked, forking branches. Compound, feathery leaves 8-10 inches long consist of oval leaflets 1 – 2 1/2 inches long. A pair of approximately 1/2-inch-long thorns forms at the base of each leaf. White, sweet-scented flower clusters (May-June) resemble pea blossoms. Smooth, dark brown pods 3 – 4 inches long contain poisonous seeds.