Flora of North America species comparison

ascending to erect, (16–)20–60 cm, glabrous or ± puberulent proximally, ± glaucous.

decumbent to erect, (2–)5–30(–65) cm, retrorsely hairy, not glaucous.

basal and cauline, ± leathery or not, glabrous or proximals puberulent proximally or along midveins, ± glaucous;

basal and proximal cauline (30–)50–95 × 10–15(–28) mm, blade spatulate to oblanceolate, base tapered, margins entire, usually undulate, apex rounded to obtuse;

cauline 2–4 pairs, sessile, 20–73 × 4–15 mm, blade lanceolate to elliptic, base truncate to clasping, margins crisped or undulate, apex acute.

basal and cauline, not leathery, glabrous or retrorsely hairy;

basal and proximal cauline (8–)15–105 × 2–22(–32) mm, blade obovate to ovate or oblanceolate, base tapered, margins entire, sometimes serrulate or serrate, apex obtuse to acute;

cauline (1 or)2–4 pairs, sessile or proximals short-petiolate, 10–35(–45) × 1–11 mm, blade obovate to oblanceolate or lanceolate, base tapered to clasping, margins entire, rarely ± serrate, apex obtuse to acute.

interrupted, secund to subsecund, (4–)8–31 cm, axis glabrous, verticillasters 5–9(–12), cymes (1 or)2–5-flowered, 2 per node;

proximal bracts ovate to lanceolate, 15–50 × 3–23 mm;

peduncles and pedicels glabrous, peduncles to 18 mm, pedicels 1–7 mm.

interrupted, cylindric to ± secund, (1–)3–20(–39) cm, axis moderately glandular-pubescent, verticillasters (1–)3–9(–11), cymes (1 or)2–6(–11)-flowered, 2 per node;

proximal bracts lanceolate, rarely ovate, 6–34(–48) × 1–11 mm, margins entire;

peduncles and pedicels ascending to erect, glandular-pubescent and, usually, retrorsely hairy.

calyx lobes ovate, 3.5–4.5 × 1.4–2 mm, apex acute to acuminate, glabrous;

corolla blue to violet, with violet nectar guides, funnelform to weakly ventricose, 14–18(–20) mm, glabrous or ± glandular externally, glabrous internally, tube 5–8 mm, throat gradually inflated, not constricted at orifice, 5–7 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, navicular-sigmoid, 1.2–1.7 mm, dehiscing incompletely, proximal 1/4 indehiscent, connective not splitting, sides sparsely to moderately pilose, hairs white, to 0.5(–0.7) mm, sutures denticulate, teeth to 0.1 mm;

staminode: 9–11 mm, reaching orifice, 0.2–0.4 mm diam., tip straight, distal 2–6 mm sparsely pilose, hairs golden yellow, to 0.6 mm;

style 9–12 mm.

calyx lobes ovate to lanceolate, 2.8–5(–6) × 1–1.9 mm, margins entire or erose, apex acute, glandular-pubescent;

corolla blue to purple or violet, with reddish violet nectar guides, bilabiate, not personate, tubular-funnelform, (7–)8–19 mm, glandular-pubescent externally, sparsely to moderately white- or yellow-lanate internally abaxially, tube 2–5 mm, throat slightly inflated, (3–)4.5–6 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 0.5–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth or papillate;

staminode (3–)7–9 mm, included, 0.1–0.3 mm diam., tip slightly recurved, distal 1–4 mm sparsely to densely pilose, hairs yellow or golden yellow, to 0.7 mm (medial hairs sparser and shorter);

style 6–12 mm.

6–10 × 4–5 mm.

4–6 × 2.5–3.5 mm, glabrous.