Flora of North America species comparison

ascending to erect, (18–)40–80(–120) cm, glabrous, sometimes retrorsely hairy proximally, not glaucous.

ascending to erect, 35–80 cm, puberulent or retrorsely hairy proximally, retrorsely hairy and sparsely glandular-pubescent distally, not glaucous.

basal and cauline, ± leathery or not, glabrous or sparsely retrorsely hairy, rarely densely retrorsely hairy, not glaucous;

basal and proximal cauline 40–80(–120) × 7–20(–30) mm, blade obovate to oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 5–7(or 8) pairs, sessile, 38–110 × 1–10 mm, blade oblanceolate to linear, base tapered, apex obtuse to acute.

basal and cauline, basal sometimes withering by anthesis, not leathery, glabrous or puberulent along midveins and, sometimes, on proximal parts of blade;

basal and proximal cauline 55–170 × 15–60 mm, blade triangular-ovate to cordate or lanceolate, base tapered, margins crenate to sharply serrate, apex obtuse to acute;

cauline 4–6 pairs, sessile, 66–105 × 12–48 mm, blade ovate to lanceolate, proximals sometimes lyrate, base truncate to broadly clasping, margins crenate to sharply serrate, apex acute.

erupted, secund, sometimes subsecund, (12–)15–32 cm, axis glabrous, verticillasters 6–12, cymes 1–2(–5)-flowered, 2 per node;

proximal bracts linear, (6–)26–84 × 1–4 mm;

peduncles and pedicels glabrous.

interrupted, narrowly conic, (6–)10–28 cm, axis puberulent and glandular-pubescent, verticillasters 4–7, cymes (3–)5–12-flowered, 2 per node;

proximal bracts lanceolate, 56–130 × 23–55 mm, margins sharply serrate;

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

calyx lobes ovate, (2.2–)3.5–6(–7) × 2.1–2.7 mm, glabrous;

corolla blue to pinkish blue or lavender, with violet nectar guides, ventricose, 25–35(–38) mm, glabrous externally, glabrous internally, tube 8–11(–14) mm, throat abruptly inflated, slightly constricted at orifice, 9–13 mm diam., slightly 2-ridged abaxially;

stamens: longer pair exserted, pollen sacs divergent to nearly opposite, navicular-sigmoid, 2–2.5(–2.8) mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides densely villous or lanate, hairs white, to 2.5 mm, sutures smooth, papillate, or denticulate, teeth to 0.1 mm;

staminode 12–17 mm, included, 0.8–1 mm diam., tip straight, glabrous or distal 1–2 mm sparsely pilose, hairs white, to 0.5 mm;

style 16–25 mm.

calyx lobes ovate to lanceolate, 3.5–5 × 1.2–2.1 mm, glandular-pubescent;

corolla lavender to violet or purple, with violet nectar guides, funnelform to ventricose-ampliate, 28–35 mm, glandular-pubescent externally, moderately white-lanate internally abaxially, tube 7–8 mm, throat abruptly inflated, 9–16 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 1.3–1.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 15–18 mm, included, 0.4–0.6 mm diam., tip straight, distal 13–15 mm ± pilose, hairs yellow, to 2 mm;

style 17–20 mm.

(7–)10–15 × 4–5 mm.

7–10 × 4–5 mm, glabrous.

= 16.