Flora of North America species comparison

ascending to erect, 8–25(–40) cm, densely retrorsely hairy, not glaucous.

ascending to erect, 26–45 cm, glabrous, glaucous.

basal and cauline, or basal absent or reduced, not leathery, retrorsely hairy or glabrous, sometimes glabrescent, not glaucous;

basal and proximal cauline 30–75(–100) × 2–18(–27) mm, blade oblanceolate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 2–4 pairs, sessile, rarely short-petiolate, 22–77 × 3–10(–15) mm, blade lanceolate, proximals sometimes oblanceolate, base tapered to truncate, apex acute.

basal and cauline, ± leathery or not, glabrous, glaucous;

basal and proximal cauline 15–60 × 7–13 mm, blade spatulate to elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–4 pairs, sessile or proximals short-petiolate, 26–55 × 7–14 mm, blade oblanceolate to oblong or lanceolate, base truncate to clasping, margins entire, apex obtuse to acute.

interrupted to ± continuous, cylindric, (3–)8–22(–28) cm, axis moderately to densely retrorsely hairy, verticillasters (5–)7–15, cymes (1 or)2- or 3-flowered, 2 per node;

proximal bracts lanceolate, 16–50(–63) × 3–10 mm;

peduncles and pedicels retrorsely hairy.

interrupted, cylindric, 8–22 cm, axis glandular-pubescent, verticillasters 2–8, cymes 3–6-flowered, 2 per node;

proximal bracts lanceolate, 16–40 × 2–14 mm, margins entire;

peduncles and pedicels ascending to erect, pedicels glandular-pubescent, sometimes peduncles glabrous.

calyx lobes ovate, (3–)4–6.8 × 1.7–2.8 mm, glabrous, rarely ± puberulent;

corolla blue to violet or purple, with violet nectar guides, funnelform, (12–)14–23(–28) mm, glabrous externally, glabrous internally, tube 6–8 mm, throat gradually inflated, not constricted at orifice, 6–9 mm diam., rounded abaxially;

stamens included, pollen sacs divergent, navicular, (1–)1.2–1.5(–1.8) mm, dehiscing incompletely, proximal 1/4 indehiscent, connective not splitting, sides sparsely to moderately hispid, hairs white or tan, to 0.4(–1) mm, sutures papillate or denticulate, teeth to 0.1 mm;

staminode 10–12 mm, included, 0.8–1.1 mm diam., tip recurved, distal 5–7 mm sparsely pilose, hairs yellow, to 1 mm;

style 12–15 mm.

calyx lobes ovate to lanceolate, 2.4–5.5 × 1–2 mm, glandular-pubescent;

corolla violet, without nectar guides, tubular-funnelform, 12–15 mm, glandular-pubescent externally, moderately yellow-pilose internally abaxially, tube 3–4 mm, throat slightly inflated, 3.5–5 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.7–1 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 6–8 mm, included, 0.3–0.5 mm diam., tip straight to slightly recurved, distal 1–2 mm densely pilose, hairs golden yellow, to 0.5 mm, or glabrous;

style 8–10 mm.

7–10 × 5–6 mm.

5–7 × 3–4 mm, glabrous.