A shrub from one to three feet high. Leaves. - Narrowly oblong, light green. Flowers. - Deep pink, in lateral clusters. Calyx. - Five-parted. Corolla. - Five-lobed, between wheel and bell-shaped, with stamens caught in its depressions as in the mountain laurel. Stamens. - Ten. Pistil. - One.

This low shrub grows abundantly with the mountain laurel, bearing smaller deep pink flowers at the same season, and narrower, paler leaves. It is said to be the most poisonous of the genus, and to be especially deadly to sheep, while deer are supposed to feed upon its leaves with impunity.