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.

erect, (35–)55–100 cm, glabrous, 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.

basal and cauline, or basal absent or reduced, leathery, glabrous, glaucous;

basal and proximal cauline 25–110 × (4–)10–27 mm, blade ovate to elliptic or lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–6 pairs, sessile, (5–)15–105 × (1–)2–30 mm, blade lanceolate, base tapered to clasping, apex acute to acuminate.

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, 8–55 cm, axis glabrous, verticillasters 5–13, cymes 1- or 2(or 3)-flowered, (1 or)2 per node;

proximal bracts lanceolate to subulate, 4–8 × 1–3 mm;

peduncles and pedicels spreading to ascending, glabrous.

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 ovate to lanceolate, 4–5.8 × 2.5–3.2 mm, glabrous;

corolla violet to lavender, with reddish purple nectar guides, ventricose-ampliate, 20–33 mm, glabrous externally, sparsely white-lanate internally abaxially, tube 7–9 mm, throat gradually to abruptly inflated, not constricted at orifice, 9–11 mm diam., rounded abaxially;

stamens: longer pair exserted, pollen sacs opposite, navicular, 1.7–2.3 mm, dehiscing completely, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 16–20 mm, reaching orifice or exserted, 0.5–0.8 mm diam., tip straight, distal 2–4 mm sparsely lanate, hairs yellow, to 1.5 mm;

style 17–22 mm.

5–7 × 3–5 mm, glabrous.

8–10 × 3–4 mm.

= 16.