herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Collinsonia, genus Collinsonia - small genus of perennial erect or spreading aromatic herbs; United States

nettle - any of numerous plants having stinging hairs that cause skin irritation on contact (especially of the genus Urtica or family Urticaceae)

genus Pilea, Pilea - low-growing tropical perennials grown for their stingless foliage