Heal-all
Heal-all is a genus of shrubs and annual or perennial herbs. The stems vary from 51 to 305 cm tall, with simple, opposite, triangular leaves, 1.02 to 14 cm long with serrate margins. In most species, the leaves are softly hairy. The flowers are 1.02 to 2 cm long, clustered in the axils of the leaves on the upper part of the stem. The name refers to the fact that the inflorescence is often a spike. Estimates of the number of species in the genus vary from about 300, to about 450. The distribution of the genus covers Europe, Asia, Africa, Australasia and North America.