E-Flora BC: Electronic Atlas of the Flora of British Columbia

General:
Perennial herb from a creeping rhizome; stems reclining to ascending, stout, 10-60 cm long, short-hairy, often red, 4-angled.

Leaves:
Opposite, narrowly egg-shaped to elliptic, 1-2 cm long, 0.6-1 cm wide, tips rounded, bases somewhat wedge-shaped, minutely-hairy, gland-dotted, margins somewhat toothed, 1-6 teeth on each side; short-stalked; uppermost leaves reduced, more or less unstalked.

Flowers:
Inflorescence of many separated, axillary flower clusters, subtended by leaf-like bracts barely longer than flowers; corollas tubular, violet to lavender, 5-8 mm long, 4-lobed, the lobes nearly equal, hairy outside, the tube somewhat swollen on one side below the mouth; calyces cone- to bell-shaped, 2.5-4 mm long, short-hairy and hairy within, weakly 2-lipped, the lower 2 teeth narrower than upper 3.

Fruits:
Nutlets, 4 clustered together, egg-shaped.