Wart-Wort, Churn-staff, Cat's-milk, or Sun-spurge ; Euphorbia helioscopia, L. an indigenous plant, growing in gardens, corn-fields, and cultivated grounds ; flowering in July and August. - This vegetable, though eaten by cattle and sheep, imparts to the flesh of the latter animals a disagreeable flavour, and is also detrimental to their health. - The milky juice exuding from the stalk, tinges paper of a fine azure-blue colour.