Flora of North America species comparison

decumbent to ascending or erect, 15–90 cm, retrorsely hairy, hairs pointed, not glaucous.

ascending to erect, 20–80 cm, glabrous or retrorsely hairy, rarely sparsely glandular-pubescent, not glaucous.

cauline, opposite, puberulent or retrorsely hairy, hairs pointed, sometimes glabrate, not glaucous;

cauline 4–8 pairs, sessile or proximals short-petiolate, 13–85(–110) × 2–22 mm, blade oblanceolate to lanceolate or linear, base tapered to truncate, margins entire, apex acute.

basal and cauline, not leathery, glabrous or puberulent (especially on petiole and along major veins and margins);

basal and proximal cauline 30–120(–160) × 4–32 mm, blade ovate to elliptic, rarely spatulate, base tapered, margins serrate to serrulate or entire, apex obtuse to acute, rarely rounded;

cauline 2–6 pairs, sessile, 20–75 × 5–27 mm, blade lanceolate to oblong, base truncate to clasping, margins serrate to serrulate, sometimes entire, apex obtuse to acute or acuminate.

interrupted, cylindric, 10–30(–43) cm, axis glandular-pubescent, verticillasters 6–12, cymes 1–5-flowered, 2 per node;

proximal bracts lanceolate, rarely linear, 9–40 × 2–10 mm;

peduncles and pedicels spreading to ascending, glandular-pubescent.

interrupted, cylindric to narrowly conic, 18–37 cm, axis moderately to densely glandular-pubescent, verticillasters 5–11, cymes 3–11-flowered, 2 per node;

proximal bracts ovate to lanceolate, 25–60 × 9–30 mm, margins serrate to serrulate, sometimes entire;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes ovate to lanceolate, 4–11 × 1–2.8 mm, glandular-pubescent;

corolla violet to blue or purple, with or without violet nectar guides, funnelform to ampliate, 21–35 mm, glandular-pubescent externally, glabrous internally, tube 6–9 mm, throat gradually inflated, 8–10 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 1.8–2.8 mm, distal 1/5–1/3 indehiscent, sides pubescent to lanate, hairs white, to 1 mm near filament attachment, sutures denticulate, teeth to 0.3 mm;

staminode 17–19 mm, included or reaching orifice, 0.5–0.6 mm diam., glabrous;

style 16–22 mm.

calyx lobes ovate to lanceolate, 3–5 × 1.4–2.5 mm, margins narrowly to broadly scarious, glandular-pubescent to densely glandular-pubescent;

corolla blue to violet or purple, with reddish purple nectar guides, funnelform, 12–18 mm, glandular-pubescent externally, moderately white-lanate internally abaxially, tube 4–5 mm, throat slightly inflated, 3–6 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular to subexplanate, 0.7–1.1 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 8–10 mm, included, 0.3–0.5 mm diam., tip recurved, distal 2–3 mm sparsely to moderately pilose, hairs yellow or yellow-orange, to 1.5 mm;

style 8–11 mm.

7–9 × 4–6 mm.

4–5 × 3–4 mm, glabrous.

= 32.