Flora of North America species comparison

ascending to erect, (30–)40–100 cm, viscid glandular-pubescent, not glaucous.

erect, (30–)40–70 cm, glabrous.

basal and cauline, opposite, viscid glandular-pubescent, not glaucous;

basal and proximal cauline 25–120(–260) × 7–20(–65) mm, blade elliptic to lanceolate, base tapered, margins entire, subentire, or irregularly serrate to dentate, apex acute to acuminate;

cauline 4–10 pairs, sessile, 32–80(–120) × 12–45 mm, blade ovate to obovate, elliptic, or lanceolate, base tapered to cordate-clasping, margins entire or subentire to irregularly serrate to dentate, apex obtuse to acute or acuminate.

basal and cauline, glabrous;

basal and proximal cauline (15–)30–70 × (6–)13–26 mm, blade trullate to ovate or elliptic, base tapered, apex acute, obtuse, rounded, or mucronate;

cauline 3–7 pairs, sessile, (10–)18–53 × (7–)12–26 mm, blade ovate to elliptic or oblanceolate, base tapered to clasping, apex obtuse to acute, rounded, or mucronate.

interrupted, cylindric, (5–)8–31 cm, axis viscid glandular-pubescent, verticillasters 3–7, cymes (1 or)2–8-flowered, 2 per node;

proximal bracts ovate, 18–60 × 11–44 mm;

peduncles and pedicels ascending to erect, viscid glandular-pubescent.

interrupted, cylindric, 13–30 cm, axis glabrous, verticillasters 6–10, cymes 1–4(–7)-flowered;

proximal bracts ovate to lanceolate, 10–20 × 3–12 mm;

peduncles and pedicels glabrous.

calyx lobes lanceolate, 9–15 × 2.3–3.8 mm, viscid glandular-pubescent;

corolla lavender to bluish lavender or purple, with dark violet nectar guides, ampliate, (28–)30–40 mm, glandular-pubescent externally, sparsely to moderately white-pubescent internally abaxially, tube 9–11 mm, throat gradually inflated, 12–15 mm diam., rounded abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1.6–2.2 mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.2 mm;

staminode 22–26 mm, exserted, 0.8–1 mm diam., glabrous, rarely distal 2–4 mm sparsely pubescent, hairs yellow, to 0.4 mm;

style 20–26 mm.

calyx lobes ovate to lanceolate, 3.5–7(–9) × 2–2.7 mm, margins entire or erose, broadly scarious, glabrous;

corolla blue to violet, lavender, or pinkish blue, without nectar guides, funnelform, 17–24 mm, glabrous externally, glabrous internally, tube 8–11 mm, throat gradually inflated, 5–7 mm diam., rounded abaxially;

stamens: 2 prominently exserted, 4–6 mm, 2 included, pollen sacs parallel or divergent, 2–3 mm, sutures smooth;

staminode 7–10 mm, included or reaching orifice, 0.5–1(–1.5) mm diam., tip recurved, distal 4–6 mm densely villous, hairs golden yellow, to 1.5 mm;

style 18–22 mm.

9–13 × 5–6.5 mm.

7–11 × 4–6 mm.