Weak-stemmed plant, stems usually red at their base. Leaves opposite, lanceolate to ovate, all leaves with petioles, we measured leaves to 6 cm long and 3 cm wide. Leaves often with very small teeth. Branching growth habit above, with stems and flowering stems growing from leaf axils. Blue flowers in early summer, about 15 mm in diameter. Plant glabrous.
We measured plants to 36 cm tall; Budd's Flora lists stems 10 to 50 cm long.
Listed as common in Checklist of the Vascular Plants of Saskatchewan. Habitat is edges of streams and springs in the Boreal forest, and the Cypress Hills.
Took the above photo on June 21st edge of a small brook, in the Cypress Hills, 450 km southwest of our home in Regina, SK.