Flora of North America species comparison

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

ascending to erect, 24–50 cm, glabrous proximally, sparsely glandular-pubescent distally, glaucous.

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.

basal and cauline, basal sometimes few, opposite, glabrous, glaucous;

basal and proximal cauline 20–75(–90) × 4–16(–20) mm, blade oblanceolate to elliptic, base tapered, margins entire, apex rounded to obtuse;

cauline 3 or 4 pairs, sessile or proximals short-petiolate, 17–80 × 3–18 mm, blade oblanceolate to oblong or lanceolate, base tapered to cordate-clasping, margins entire, apex obtuse to acute.

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.

interrupted, cylindric, 5–22 cm, axis glandular-pubescent, verticillasters 3–6, cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts lanceolate, 20–44 × 4–13 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

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.

calyx lobes lanceolate, 7–10 × 1.8–2.6 mm, glandular-pubescent;

corolla violet to blue or lavender, without nectar guides, ventricose, (25–)30–35 mm, glandular-pubescent externally, glabrous internally, tube 10–11 mm, throat gradually inflated, 7–9 mm diam., 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1.5–2 mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 19–24 mm, included, 0.4–0.6 mm diam., distal 10–14 mm moderately to densely pilose, hairs golden yellow, to 1.2 mm;

style 26–30 mm.

6–7 × 4.5–6 mm.

7–9 × 4–5 mm.

= 16.