Flora of North America species comparison

ascending to erect, 25–55(–65) cm, retrorsely hairy and glandular-villous proximally, retrorsely hairy and glandular-pubescent distally, glandular hairs sometimes sparse, not glaucous.

ascending to erect, 20–65 cm, glabrous or retrorsely hairy, hairs ± pointed, sometimes glaucous.

basal and cauline, basal often withering by anthesis, not leathery, sparsely to densely pubescent, sometimes also with scattered glandular hairs, abaxially, sparsely pubescent adaxially;

basal and proximal cauline 20–120(–180) × 5–35(–40) mm, blade spatulate to obovate or ovate, base tapered, margins subentire or ± serrate or dentate, apex rounded to obtuse or acute;

cauline 4–8 pairs, sessile, 22–100 × 4–24 mm, blade ovate to lanceolate, base truncate to clasping, margins subentire or ± serrate or dentate, apex acute to acuminate.

essentially cauline, basal absent or essentially so, opposite, glabrous, sometimes glaucous distally or abaxially;

cauline (3–)6–10 pairs, petiolate or sessile, (20–)40–80(–105) × (2–)4–15 mm, blade spatulate to oblanceolate or lanceolate, base tapered, margins entire, apex rounded to obtuse or acute.

interrupted, conic, 5–26(–30) cm, axis sparsely to densely glandular-pubescent, verticillasters 3–8, cymes 2–8(–16)-flowered, 2 per node;

proximal bracts lanceolate, 7–72 × 2–22 mm, margins entire or ± dentate;

peduncles and pedicels ascending, sparsely to densely glandular-pubescent.

interrupted, cylindric, (3–)7–28 cm, axis glandular-pubescent, usually sparsely so proximally, verticillasters 3–6(–9), cymes 2–4(–7)-flowered, 2 per node;

proximal bracts lanceolate to linear, 14–75 × 1–6 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes ovate to lanceolate, (2–)3–5 × 1–3 mm, sparsely glandular-pubescent;

corolla white, sometimes tinged lavender or blue, with reddish purple nectar guides, tubular to tubular-funnelform, 16–22 mm, glandular-pubescent externally, moderately whitish or yellowish lanate internally abaxially, tube 4–6 mm, throat slightly inflated, 4–7 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, (0.8–)1–1.2 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 10–12 mm, exserted, 0.2–0.3 mm diam., tip straight to slightly recurved, distal 8–9 mm moderately to densely villous, hairs yellow or golden yellow, to 1.5 mm;

style 12–14 mm.

calyx lobes oblong to lanceolate, 3.5–5.5 × 0.8–1.4 mm, glandular-pubescent;

corolla blue to violet or purple, with or without dark blue nectar guides, funnelform, 15–20(–24) mm, glandular-pubescent externally, glabrous internally or sparsely to densely white- or yellow-pilose abaxially, tube 6–8 mm, throat gradually inflated, 4–5 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 1–1.3 mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 8–10 mm, included, 0.3–0.4 mm diam., distal 3–5 mm sparsely to moderately pubescent, hairs yellow, to 0.5 mm;

style 12–15 mm.

5–7 × 3–5 mm, glabrous.

5–7 × 3.5–4 mm.

= 16.

= 16.