Flora of North America species comparison

decumbent to ascending, 7–25(–30) cm, retrorsely hairy, hairs pointed, often densely so, not glaucous.

ascending to erect, (15–)35–55 cm, spreading-puberulent or retrorsely hairy proximally, glandular-pubescent medially and distally, not glaucous.

cauline, opposite, retrorsely hairy or puberulent, hairs pointed, not glaucous;

cauline (2 or)3–6 pairs, short-petiolate or sessile, 17–50(–80) × 2–7(–10) mm, blade oblanceolate to linear, base tapered, margins entire, apex obtuse to acute.

basal and cauline, basal often withering by anthesis, not leathery, puberulent or retrorsely hairy;

basal and proximal cauline 25–80(–110) × 5–24(–32) mm, blade spatulate to obovate, oblanceolate, or lanceolate, base tapered, margins subentire or ± denticulate or serrate, apex rounded to obtuse or acute;

cauline 2–9 pairs, short-petiolate or sessile, (25–)60–120 × 4–20 mm, blade lanceolate to linear, base tapered to clasping, margins entire or ± denticulate to serrate, apex acute.

continuous, cylindric, 3–15 cm, axis retrorsely hairy or puberulent, verticillasters 4–10, cymes (1 or)2–4-flowered, 2 per node;

proximal bracts oblanceolate to lanceolate, 11–40 × 2–8 mm;

peduncles and pedicels ascending to erect, peduncles puberulent, pedicels puberulent and glandular-pubescent, at least distally.

interrupted, cylindric, (5–)8–18(–25) cm, axis glandular-pubescent, verticillasters (2 or)3–6, cymes 2–4(–6)-flowered, 2 per node;

proximal bracts lanceolate to linear, 60 × 6 mm, margins entire;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes lanceolate, 4–6 × 1.4–1.9 mm, glandular-pubescent;

corolla violet to purple, reddish purple, or blue, without nectar guides, ventricose, 15–22 mm, glandular-pubescent externally, glabrous internally, tube 5–7 mm, throat gradually inflated, 4.5–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 1–1.5(–1.8) mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 11–13 mm, reaching orifice or barely exserted, 0.4–0.5 mm diam., glabrous;

style 12–16 mm.

calyx lobes ovate to lanceolate, 5–7 × 3–4 mm, glandular-pubescent;

corolla white to ochroleucous, without nectar guides, personate, tubular, 24–32 mm, glandular-pubescent externally, densely yellowish lanate internally abaxially, tube slightly differentiated from throat, 6–10 mm, throat slightly inflated, 6–8 mm diam., 2-ridged abaxially;

stamens included, pollen sacs divergent, navicular to subexplanate, 1–1.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 18–20 mm, included or slightly exserted, 0.4–0.6 mm diam., tip straight, distal 14–16 mm ± villous, hairs yellowish orange, to 1.5 mm;

style 20–22 mm.

6–10 × 4–6 mm.

8–13 × 3–5 mm, glabrous.

= 16.