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, 13–80 cm, glabrous or retrorsely hairy, hairs pointed, 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.

cauline, opposite, glabrous, sometimes sparsely puberulent, hairs pointed, adaxially along midvein, not glaucous;

cauline 3–6 pairs, petiolate proximally or sessile distally, (12–)30–80 × (7–)15–50 mm, blade ovate-oblong proximally, ovate or lanceolate distally, base truncate to tapered proximally, cordate-clasping distally, margins serrate, apex obtuse to acute.

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.

continuous or interrupted, cylindric, 2–18(–28) cm, axis retrorsely hairy, verticillasters 1–3(–5), cymes 3–10-flowered, 2 per node;

proximal bracts ovate, 13–35(–80) × 6–16(–36) mm;

peduncles and pedicels ascending to erect, retrorsely hairy to puberulent.

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 obovate to lanceolate, 3.5–11 × 1–3 mm, sparsely pubescent and ciliolate along margins, sometimes glabrate;

corolla blue to violet or purple, without nectar guides, weakly ventricose, 17–25(–28) mm, glabrous externally, glabrous or sparsely to densely white-lanate internally abaxially, tube 4–6 mm, throat gradually inflated, 5–8 mm diam., 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1.1–1.6 mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 12–14 mm, exserted, 0.3–0.6 mm diam., distal 2–7 mm sparsely lanate, hairs yellow, to 1.5 mm;

style 10–16 mm.

4–6 × 3–4 mm, glabrous.

5–8 × 3–5.5 mm.

= 16.

= 16.