15 cm ruler for scale

Erect plant with single stem to a few branches. Flowers mauve in colour in whorls in leaf axils, flowers measured to 5 mm in length. Leaves opposite, serrate, lanceolate to elliptical. We measured a large leaf blade at 9.5 cm long and 2.5 cm wide. Stems square, glabrous at bottom of stems, hairs on edges of stem near the top. Leaves are pubescent below with short hairs, and sparsely hairy above. Plants have a minty aroma.

Habitat is sloughs, ditches, and wet places across Saskatchewan. Very common.

Height listed in Budd's Flora to 50 cm, we measured plants to 55 cm tall.

Photos taken July 21st, beaver swamp, Duck Mountain Provincial Park, 300 km north east of our home in Regina, SK.

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