UW Burke Herbarium species comparison

Basal leaves opposite, clustered, petiolate, with ovate to sub-cordate blade up to 10 cm. long and half as wide, about equaling the petiole, serrate, hairy like the stem, especially along the mid-vein beneath;

cauline leaves sessile and clasping, more sharply serrate, nearly as large, but more broadly oblong, the upper ovate.

Leaves opposite, entire, the basal ones petiolate, oblanceolate, often forming rosettes, up to 15 cm. long and 2 cm. wide;

cauline leaves few, well-developed, sessile, not over 10 cm. long and 2 cm. wide.

Inflorescence large and open, strongly glandular-hairy;

calyx 3-5 mm. long, broadly lanceolate, with parallel veins;

corolla blue, 15-22 mm. long, glandular-hairy on the outside, the raised portion of the lower petal pale blue and hairy;

corolla strongly bilabiate, the lower lip much the longer;

pollen sacs 0.8-1.1 mm. long, fully dehiscent and becoming opposite, nearly glabrous;

staminode bearded toward the recurved tip.

Inflorescence of 1-several dense verticillasters, the flowers spreading at right angles to the stem;

calyx 3-7 mm. long, the 5 segments narrowly scarious-margined, tapering to a pointed tip;

corolla blue-purple, 11-15 mm. long, bilabiate, the tube expanded, 3-5 mm. wide at the mouth; raised portion of the lower petal bearded;

staminode usually bearded at the expanded tip;

pollen sacs glabrous, ovate, 0.6-1.0 mm. long, dehiscent throughout and becoming opposite.

Capsule 4-6 mm. long.

Capsule 5-6 mm. long.