Urtica dioica, a perennial weed that is covered with stinging hairs.

perennial Eurasian nettle established in North America having broad coarsely toothed leaves with copious stinging hairs

Urtica dioica) A perennial herb with many medicinal uses. The root of Urtica dioica is used medicinally to increase SHBG (sex hormone binding globulin). This serves to decrease the activity of excess hormones in conditions like PCOS and BPH.