Flora of North America species comparison

ascending to erect, 13–50 cm, retrorsely hairy, hairs pointed, not glaucous.

ascending to erect, 8–25(–32) cm, glabrous.

essentially cauline, opposite, retrorsely hairy, hairs pointed, sometimes glabrate, not glaucous;

cauline 5–8 pairs, petiolate or sessile, 22–80 × (1–)2–9 mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire, apex obtuse to acute.

essentially cauline, basal usually reduced or absent, glabrous;

proximal cauline (15–)20–55 × (4–)10–25 mm, blade spatulate to lanceolate, base tapered, apex rounded to obtuse or acute;

cauline 4–6 pairs, short-petiolate or sessile, 30–58 × 9–26 mm, blade ovate to elliptic or lanceolate, base tapered to clasping, apex obtuse to acute.

interrupted, cylindric, 4–14 cm, axis glandular-pubescent, verticillasters (3 or)4–8(–12), cymes 1–5-flowered, 2 per node;

proximal bracts lanceolate, 5–40 × 1–4 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

± interrupted, cylindric, 8–14 cm, axis glabrous, verticillasters 4–9, cymes 1–5-flowered;

proximal bracts ovate, 16–44 × 6–24 mm;

peduncles and pedicels glabrous.

calyx lobes ovate to lanceolate, 3.8–7 × 1.4–2.6 mm, glandular-pubescent;

corolla blue to violet or purple, without nectar guides, funnelform, 15–25 mm, glandular-pubescent externally, glabrous internally, tube 6–8 mm, throat gradually inflated, 6–9 mm diam., slightly 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1.5–2 mm, distal 1/2 indehiscent, sides hispidulous, hairs white, to 0.5 mm near filament attachment, sutures denticulate, teeth to 0.2 mm;

staminode 12–15 mm, reaching orifice, 0.5–1 mm diam., glabrous;

style 13–17 mm.

calyx lobes lanceolate, 5–6.5 × 1.9–3 mm, margins entire or erose, broadly scarious, glabrous;

corolla pink, with rose pink nectar guides, tubular-funnelform, 15–18 mm, glabrous externally, glabrous internally, tube 5–6 mm, throat gradually inflated, 4–5 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 1–1.2 mm, sutures smooth;

staminode 8–9 mm, reaching orifice, 0.7–0.8 mm diam., tip recurved, distal 0.5–1.5 mm sparsely lanulose, hairs yellow, to 0.6 mm;

style 14–16 mm.

(5.5–)7–9 × (3–)4–6 mm.

7–10 × 5–8 mm.