lambkill

The sheep-laurel, Kalmia angustifolia.

A small American ericaceous shrub (Kalmia angustifolia), resembling mountain laurel but having narrower leaves and small red flowers; — called also calfkill, sheepkill, sheep laurel, etc. It is supposed to poison young sheep and other animals that eat it at times when the snow is deep and they cannot find other food.

Kalmia angustifolia, a toxic plant with small, deep pink flowers.

North American dwarf shrub resembling mountain laurel but having narrower leaves and small red flowers; poisonous to young stock