Flora of North America species comparison

ascending to erect, (10–)15–38 cm, glabrous or sparsely retrorsely hairy, sometimes also sparsely glandular-pubescent.

ascending to erect, (11–)20–60 cm, ± puberulent proximally, glabrous distally, not glaucous.

basal and cauline, ± leathery or not, glabrous, sometimes sparsely retrorsely hairy along midvein abaxially, not glaucous;

basal and proximal cauline (13–)40–90 × (3–)6–18 mm, blade ovate to oblanceolate or lanceolate, base tapered, margins ± serrate or dentate, apex obtuse to acute;

cauline 2–6 pairs, short-petiolate or sessile, 15–55 × 3–10 mm, blade lanceolate, proximals sometimes oblanceolate to oblong, base tapered or truncate, margins entire or ± serrate to ± dentate, apex obtuse to acute.

basal and cauline, not leathery, proximals ± puberulent, distals glabrous, not glaucous;

basal and proximal cauline (24–)40–90(–120) × 6–20(–30) mm, blade obovate, base tapered, margins entire, apex obtuse to acute;

cauline 3–5 pairs, sessile, (25–)35–70 × 8–23 mm, blade ovate to lanceolate or elliptic, base tapered to clasping, apex acute, rarely obtuse.

continuous or ± interrupted, cylindric, 4–19 cm, axis glabrous or ± glandular-pubescent, verticillasters 4–8, cymes (1 or)2–6-flowered, 2 per node;

proximal bracts lanceolate, 9–40 × 3–15 mm, margins entire or ± serrate to dentate;

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

interrupted, secund, 7–21 cm, axis glabrous, verticillasters 3–6, cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 5–28 × 2.5–24 mm;

peduncles and pedicels glabrous, peduncles to 26 mm, pedicels 1–8(–12) mm.

calyx lobes ovate, 2.8–4.8 × 0.9–1.8 mm, glandular-pubescent;

corolla blue to light blue or violet, with reddish purple nectar guides, funnelform, 13–20 mm, glandular-pubescent externally, sparsely white-villous internally abaxially, tube 4–5 mm, throat gradually inflated, 4–5 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, subexplanate to explanate, 0.5–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth or papillate;

staminode 8–9 mm, included, 0.2–0.3 mm diam., tip straight to recurved, distal 0.5–2 mm ± pilose, hairs golden yellow, to 0.8 mm;

style 9–11 mm.

calyx lobes ovate, 4.5–7 × 2.5–3 mm, apex acute to acuminate, glabrous;

corolla blue to violet, without nectar guides, ventricose, (20–)24–30(–32) mm, glabrous externally, glabrous internally, tube 8–11 mm, throat gradually inflated, not constricted at orifice, 8–10(–12) mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, rarely nearly opposite, sigmoid, 1.8–2.4(–2.8) mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides sparsely hispid, hairs white, to 0.3 mm, sutures denticulate, teeth to 0.1 mm;

staminode 14–16 mm, included, 0.6–1 mm diam., tip straight to recurved, distal 0.5–1 mm moderately pilose, hairs yellow, to 0.8 mm, remaining distal 3–4 mm with scattered yellow hairs;

style 18–22 mm.

4–6 × 3–4 mm, glabrous.

8–14 × 6–10 mm.

= 16.

= 16.