Ascending stems from creeping rhizomes, rooting at the joints. Leaves opposite, on short petioles, lance-shaped, to 2 in. long, saw-toothed to entire. Flowers violet-blue with dark lines, in long upright sprays at stem ends. Each flower to 1/3 in. across. Grows in wetlands, edges of streams, ditches, at all elevations below alpine.
- Rarity: Common
- Flowering Time: All Summer
- Life Cycle: Perennial
- Height: less than 2 inches
- Habitat: Meadow, Bog/Fen/Wetland, Vernal Wet
- Found In: Olympic Np, Mt. Rainier Np, N Cascades Np
- Native: Yes