The genus Veronicastrum (Plantaginaceae) has about 20 species in the world with a distribution in eastern Asia and North America. Species in the genus Veronicastrum are beautiful perennial herbs with mostly alternate leaves, five sepals, and a tubular corolla with four lobes. It is tubular straight or slightly curved, usually with a ring of villous hairs inside.
Click here for original story, Researchers compile ethnopharmacology of genus Veronicastrum
Source: Phys.org