Flora of North America species comparison

ascending to erect, 10–40 cm, moderately to densely retrorsely hairy, not glaucous.

ascending to erect, 10–35(–46) cm, glabrous.

basal and cauline, opposite, rarely alternate, not leathery, ± retrorsely hairy;

basal and proximal cauline 10–25(–65) × 1–2(–6) mm, blade linear, base tapered, margins entire, apex acute, rarely obtuse;

cauline 7–10 pairs, sessile or proximals sometimes petiolate, 4–45 × 1–4(–6) mm, blade linear, rarely lanceolate distally, base truncate or clasping, margins entire, usually revolute, apex acute.

basal and cauline, glabrous;

basal and proximal cauline 23–65(–100) × (9–)13–40 mm, blade oblanceolate, base tapered, apex rounded to obtuse or acute;

cauline (2–)4–6(–9) pairs, sessile, (8–)20–30 × 8–26 mm, blade ovate to orbiculate, base clasping, apex mucronate.

interrupted, cylindric, 3–18 cm, axis retrorsely hairy and glandular-pubescent, sometimes only retrorsely hairy, verticillasters 3–7, cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts lanceolate to linear, 5–24 × 1–2 mm, margins entire;

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

interrupted, cylindric, (2–)11–18(–27) cm, axis glabrous, verticillasters 6–9(–15), cymes 2–6-flowered;

proximal bracts orbiculate to ovate, 7–28 × 3–26 mm;

peduncles and pedicels glabrous.

calyx lobes broadly lanceolate, 4–6.5 × 1.5–3 mm, glandular-pubescent;

corolla blue to violet or purple, with violet nectar guides, funnelform, (13–)15–22 mm, glandular-pubescent externally, glabrous internally, tube 5–6 mm, throat gradually inflated, 4–6(–7) mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs opposite, navicular, 1.1–1.3 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;

staminode 13–17 mm, exserted, 0.5–0.9 mm diam., tip straight, distal 7–9 mm sparsely yellow-pubescent, hairs to 1 mm;

style 11–13 mm.

calyx lobes ovate, (3–)4.5–6.5 × 1.5–2.3 mm, margins entire or erose, broadly scarious, glabrous;

corolla blue to violet, with reddish violet nectar guides, guides sometimes passing onto limb, tubular-funnelform, (10–)13–17(–20) mm, glabrous externally, sparsely white-villous internally abaxially, tube (5–)7–10 mm, throat gradually inflated, 4.5–5.5(–7) mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs divergent to opposite, 0.7–1.1 mm, sutures papillate;

staminode 7–13 mm, reaching orifice, (0.6–)0.9–1.9 mm diam., tip strongly recurved, distal 2–5 mm moderately to densely pilose, hairs brownish yellow or golden yellow, to 1 mm;

style (7–)9–12 mm.

6–8 × 3–5 mm, glabrous.

8–10 × 6–7 mm.

= 16.