Split-lip Hemp Nettle
Galeopsis bifida (G. tetrahit var. bifida)

Family: Mint (Lamiaceae)
AKA: Bifid Hemp Nettle
Photo taken on: July 24, 2021
Location: Roaring Judy Fish Hatchery, GV, CO
Life Zones: Plains to montane
Habitat: Cultivated, disturbed areas

Grows to 3 feet high with a square-ish, hairy stem. Leaves are hairy on both sides and toothed. Flowers grow in whorls in the upper part of the plant.

Flowers are about 3/4" long and have an upper lip and a lower lip that is split into three lobes, the middle being the largest. The outside of the upper lip is covered in long white hairs. The inside of the lower lip is striped with purple and white and has two bumps near the throat. It is not obvious that the middle lobe of the lower lip is notched (split). This plant matches the description of Galeopsis tetrahit which has not been collected in Colorado.