Flora of North America species comparison

erect, (10–)18–90(–130) cm, glabrous proximally, usually sparsely glandular distally, not glaucous.

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

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

basal and proximal cauline 35–140(–170) × 8–24 mm, blade oblanceolate, sometimes lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–6(–11) pairs, short-petiolate or sessile, 28–95(–130) × 4–15 mm, blade oblanceolate to lanceolate, base tapered to clasping, apex acute.

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.

interrupted, secund, (4–)12–38 cm, axis glabrous or glandular-pubescent, verticillasters 4–12, cymes 1–3(–6)-flowered, 2 per node;

proximal bracts lanceolate, (3–)15–75 × (1–)2–22 mm;

peduncles and pedicels glandular-pubescent, sometimes sparsely so.

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.

calyx lobes ovate to lanceolate, 4.5–7.5 × (1.5–)2.1–2.8 mm, glandular-pubescent;

corolla blue to violet or purple, with violet nectar guides, ventricose, 19–28 mm, ± glandular-pubescent externally, glabrous internally, tube 6–10(–11) mm, throat gradually inflated, not constricted at orifice, 7–10 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 1.6–2 mm, dehiscing incompletely, connective not splitting, sides sparsely to moderately hispid or pubescent, hairs white, to 0.2 mm, sutures denticulate, teeth to 0.1 mm;

staminode 13–16 mm, reaching orifice or slightly exserted, 0.6–0.8 mm diam., tip straight, distal 2–3 mm sparsely villous, hairs yellow, to 0.7 mm;

style 14–18 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.

8–12 × 5–6 mm.

4–6 × 3–4 mm, glabrous.

= 16.

= 16.