Flora of North America species comparison

erect, 15–45(–60) cm, glabrous, glaucous.

ascending to erect, 28–90 cm, glabrous, ± glaucous.

basal and cauline, opposite, hirsute, hairs pointed, not glaucous;

basal and proximal cauline 15–30(–60) × 4–10(–14) mm, blade ovate to elliptic, base tapered, margins entire, apex rounded to acute;

cauline 2 or 3 pairs, petiolate or sessile, 8–25(–45) × 1–3 mm, blade spatulate to oblanceolate or linear, base tapered, margins entire, apex rounded to acute.

basal and cauline, ± leathery, glabrous, ± glaucous;

basal and proximal cauline 35–120(–150) × 8–30 mm, blade obovate to oblanceolate or elliptic, base tapered, margins entire, sometimes undulate, apex obtuse;

cauline 3–6 pairs, sessile or proximals sometimes short- to long-petiolate, (20–)30–120 × 6–20(–29) mm, blade oblanceolate to lanceolate or elliptic, base truncate to clasping, sometimes tapered, margins sometimes undulate, apex obtuse to acute.

interrupted, cylindric, 4–24 cm, axis glandular-pubescent, verticillasters 2–4, cymes 1–4-flowered, 1 or 2 per node;

proximal bracts subulate to lanceolate or linear, 4–35 × 1–3 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

continuous, secund, 8–48 cm, axis glabrous;

verticillasters 5–8(–17), cymes 1–4-flowered, 2 per node;

proximal bracts lanceolate, 10–65 × 2–15 mm;

peduncles and pedicels glabrous.

calyx lobes oblong to ovate, 3–4.5(–5) × 0.9–2 mm, glandular-pubescent;

corolla lavender to violet or purple, with or without faint reddish purple nectar guides, ventricose, 25–34 mm, glandular-pubescent externally, yellow-lanate internally abaxially, tube 6–9 mm, throat gradually inflated, 6–8 mm diam., 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs nearly parallel, 1.4–1.5(–1.7) mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 15–19 mm, included, 0.2–0.3 mm diam., distal 4–8 mm sparsely pilose, hairs yellow, to 0.7 mm;

style 20–29 mm.

calyx lobes ovate to lanceolate, (4–)4.5–9(–10) × 2.1–3.4(–3.8) mm, glabrous;

corolla blue to bluish violet, with reddish violet nectar guides, ventricose, (20–)25–32 mm, glabrous externally, glabrous internally, tube 7–11 mm, throat abruptly inflated, slightly constricted at orifice, 8–12 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice or exserted, pollen sacs divergent, sigmoid, 2–2.5 mm, dehiscing incompletely, proximal 1/4 indehiscent, connective not splitting, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 16–19 mm, included or reaching orifice, 0.6–0.9 mm diam., tip straight to recurved, distal 5–7 mm ± pilose, hairs yellow, to 1 mm;

style (17–)19–23 mm.

6–10 × 4–6 mm.

8–10 × 5–6 mm.

= 16.