UW Burke Herbarium species comparison

Leaves opposite, the larger leaves crowded toward the base of the season\\\\'s growth on short, sterile shoots, the blades entire or toothed, up to 6 cm. long and 1.5 cm. wide, short-petiolate; flowering shoots with reduced and less-crowded leaves.

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 a short, few-flowered, bracteate raceme, with simple, axillary pedicels;

calyx 7-15 mm. long, with 5 lanceolate, long-acuminate segments;

corolla blue-lavender to light purplish, 30-50 mm. long, 1 cm. wide at the mouth, keeled on the back, glabrous outside, with long, white hairs on the base of the lower lip within;

anthers long-woolly, the pollen sacs wholly dehiscent and opening wide enough to form a plane;

staminode slender, shorter than the 4 fertile filaments, long-bearded toward the 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.

Capsules 8-12 mm. long.

Capsule 5-6 mm. long.