Urticaceae (Nettle Family) Synonym(s): Dwarf Stinging Nettle; Heartleaf Nettle; Heart-leaf Stinging Nettle Base Flower Color: GreenReproductive Phenology: Mar, Apr, MayNotes: Do not touch this plant. You will immediately be sorry. Its called "stinging" for a reason. Its not the thorns that get you, its the hairs on the leaves that do the real damage. Pain