General:
Perennial herb from rhizome; stems solitary, erect, 20-100 cm tall, spreading-hairy, some gland-tipped, 4-angled.

Leaves:
Opposite, lance egg-shaped to narrowly elliptic or lance-oblong, 3-10 cm long, 1-4 cm wide, toothed, spreading- or appressed-hairy, some gland-tipped; short-stalked; lower leaves deciduous.

Flowers:
Inflorescence a crowded, spike-like raceme 5-20 cm long; bracts slender, about 1 cm long or less; corollas tubular, purplish, 11-18 mm long, 2-lipped, the lower lip longer than tube, with a broad, declined central lobe, the upper lip represented by 2 lobes that appear to be part of the lower lip, the corolla split on the upper side to the mouth of the calyx; calyces bell-shaped, 5-7 mm long, teeth 5, the upper 3 teeth deltoid or broader, pointed to blunt, the lower 2 longer and lance awl-shaped.

Fruits:
Nutlets, 4, almost completely joined.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Teucrium boreale Bickn.
Teucrium canadense subsp. occidentale (Gray) W.A. Weber
Teucrium canadense subsp. viscidum (Piper) Roy L. Taylor & MacBryde p.p.
Teucrium canadense var. boreale (Bickn.) Shinners
Teucrium occidentale A. Gray
Teucrium occidentale var. boreale (E.P. Bicknell) Fernald