Flora of North America species comparison

decumbent to ascending, (4–)7–18(–30) cm, glabrous.

ascending to erect, 18–50 cm, glabrous, not glaucous.

basal and cauline, glabrous;

basal and proximal cauline 21–50(–70) × 4–11(–17) mm, blade spatulate to oblanceolate, base tapered, apex rounded to obtuse, acute, or mucronate;

cauline 2–5 pairs, short-petiolate or sessile, 21–58 × 3–11 mm, blade lanceolate to oblanceolate, base tapered to clasping, apex obtuse to acute or mucronate.

basal and cauline, or basal sometimes reduced, not leathery, glabrous, not glaucous;

basal and proximal cauline 35–80(–120) × 4–13 mm, blade oblanceolate, base tapered, margins entire, apex rounded to obtuse, or acute;

cauline 3–5 pairs, sessile or proximals sometimes short-petiolate, 20–110 × 5–18 mm, blade oblanceolate to lanceolate, rarely linear, base tapered to clasping, apex obtuse to acute.

continuous, cylindric, 3–14 cm, axis glabrous, verticillasters 4–9, cymes (1 or)2–6-flowered;

proximal bracts oblanceolate to lanceolate, 13–60 × 5–16 mm;

peduncles and pedicels glabrous.

interrupted or continuous, secund, 4–17 cm, axis glabrous or ± glandular distally, verticillasters 4–11, cymes 2- or 3(–5)-flowered, 2 per node;

proximal bracts lanceolate, 10–50 × 4–16 mm;

peduncles and pedicels glandular to glandular-pubescent, peduncles to 7 mm, pedicels 2–11 mm.

calyx lobes lanceolate, 4–6.2(–7.5) × 0.9–1.6 mm, margins entire or erose, narrowly scarious, glabrous;

corolla blue to violet, with reddish purple nectar guides, tubular-funnelform, (10–)12–15 mm, glabrous externally, sparsely white-pubescent internally abaxially or glabrous, tube 4–5 mm, throat gradually inflated, 4.5–5.5 mm diam., rounded abaxially;

stamens included, pollen sacs divergent, 0.7–0.8 mm, sutures smooth or obscurely papillate;

staminode 6–8 mm, included, 0.8–1 mm diam., tip recurved, distal 3–4 mm densely pubescent, hairs golden yellow, to 1 mm;

style 8–10 mm.

calyx lobes ovate to lanceolate, 5–7.5 × 2–4 mm, margins erose, glandular to glandular-pubescent;

corolla blue to violet, without nectar guides, ventricose, 27–33 mm, glabrous externally, glabrous internally, tube 9–11 mm, throat gradually to abruptly inflated, not constricted at orifice, 8–12 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, navicular, 2–2.8 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides villous, hairs white, to 1 mm, sutures denticulate, teeth to 0.1 mm;

staminode 16–18 mm, included, 0.6–0.8 mm diam., tip straight, distal 1–6 mm sparsely lanate, hairs yellowish, to 0.8 mm;

style 17–21 mm.

6–10(–12) × 5–6 mm.

7–9 × 4.5–5.5 mm.