Galeopsis tetrahit (Hemp-Nettle) - photos and description
General: Annual weedy species with square stems, stems covered in bristly hairs.
Flowers: Flowers in dense clusters in leaf axils, stalkless, pink in colour, irregular shape. I measured a flower at 1 cm long.
Leaves: Leaves all cauline, ovate, opposite, and coarsely toothed. The blade of the leaf highlighted in photo above was measured at 6 cm long and 33 mm wide.
Height: Height listed in Budd's Flora to 100 cm, I measured plants 36 cm tall.
Habitat: Disturbed moist soil along streams and wetlands.
Abundance: Common.
Origin: Introduced.
When and where photographed: Photos taken July 10th, stream bank, Duck Mountain Provincial Park, 300 km northeast of our home in Regina, SK.