Flora of North America species comparison

ascending to erect, 20–80 cm, glabrous, sometimes ± puberulent, hairs pointed, glaucous.

ascending to erect, 15–45 cm, retrorsely hairy, hairs pointed, not glaucous.

basal and cauline, basal sometimes few, opposite, glabrous, sometimes proximals puberulent, hairs pointed, glaucous;

basal and proximal cauline 15–80 × 2–10 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 4–6 pairs, sessile, 20–80 × 3–9 mm, blade ovate to lanceolate, base tapered, margins entire, apex acute.

cauline, opposite or subalternate, retrorsely hairy, hairs pointed, not glaucous;

cauline 4–8 pairs, short-petiolate or sessile, 16–70 × 1–8(–14) mm, blade lanceolate to linear, base tapered, margins entire, apex obtuse to acute.

interrupted, cylindric, 5–25 cm, axis glandular-pubescent, verticillasters 4–6, cymes 1–3-flowered, 2 per node;

proximal bracts ovate to lanceolate, 4–50 × 1–8 mm;

peduncles and pedicels ascending, glandular-pubescent.

interrupted, cylindric, 4–15 cm, axis puberulent or retrorsely hairy, verticillasters 3–10, cymes 1–5(–7)-flowered, 2 per node;

proximal bracts lanceolate to linear, 7–50 × 1–6 mm;

peduncles and pedicels ascending to erect, puberulent or retrorsely hairy.

calyx lobes ovate to lanceolate, 3.8–6 × 1.5–2.2 mm, glandular-pubescent;

corolla violet to blue or purple, without nectar guides, ventricose to ventricose-ampliate, 25–38 mm, glandular-pubescent externally, glabrous internally, tube 7–9 mm, throat gradually inflated, 8–10 mm diam., 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 2.4–3.2 mm, distal 1/5–1/3 indehiscent, sides pilose to lanate, hairs white, to 0.6 mm near filament attachment, sutures denticulate, teeth to 0.2 mm;

staminode 11–15 mm, included, 0.4–0.6 mm diam., glabrous;

style 15–20 mm.

calyx lobes ovate, 3–5.5 × 1.4–2.3 mm, glabrous or sparsely puberulent;

corolla blue to violet or purple, without nectar guides, ampliate, 16–21 mm, glabrous externally, glabrous internally, tube 4–5 mm, throat gradually inflated, 5–6 mm diam., slightly 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1–1.5(–1.8) mm, distal 1/2–2/3 indehiscent, sides hispidulous, hairs white, to 0.1 mm near filament attachment, sutures denticulate, teeth to 0.1 mm;

staminode 10–12 mm, reaching orifice or barely exserted, 0.5–0.7 mm diam., glabrous;

style 11–13 mm.

7–9 × 4–5 mm.

6–7 × 4.5–6 mm.

= 64.

= 16.