UW Burke Herbarium species comparison

Leaves opposite, sharply toothed or entire, the basal ones 10-35 cm. long and 2.5-9 cm. wide, petiolate, the blade lanceolate to elliptic; lowermost cauline leaves reduced, the others well-developed, sessile and often clasping, broadly lanceolate to rotund-ovate, 4-12 cm. long and 2-5 cm. wide.

Leaves opposite, entire or with a few teeth, up to 13 cm. long and 2 cm. wide.

Inflorescence of several verticillasters;

calyx 9-15 mm. long, the 5 segments narrow and herbaceous;

corolla blue-lavender, strongly glandular-hairy outside, glabrous inside, 28-40 mm. long, over 1 cm. wide at the mouth;

anthers permanently horseshoe-shaped, 1.7-2.3 mm. long;

pollen sacs dehiscent across their apices, the lower part saccate and indehiscent, glabrous;

staminode glabrous, the tip flattened.

Inflorescence of several verticillasters;

calyx elongate, 7-13 mm. long, the 5 segments narrowly lanceolate, wholly herbaceous;

corolla covered with stalked glands, lavender to reddish-purple or deep bluish-purple, 2-4 cm. long, inflated, 6-14 mm. wide at the mouth, the lower lip the longer; raised portion of the lower lip strongly bearded;

pollen sacs glabrous, 1.1-1.8 mm. long, wholly dehiscent, becoming opposite;

staminode exerted, the tip slightly expanded, long-bearded most of its length;

ovary glandular-puberulent near the tip.

Capsules 10-14 mm. long, surpassed by the calyx.

Capsule 7-12 mm. long.