Flora of North America species comparison

ascending to erect, (8–)15–50 cm, retrorsely hairy, not glaucous.

20–50 cm, puberulent or retrorsely hairy proximally, puberulent and glandular-pubescent distally.

basal and cauline, basal sometimes absent, not leathery, retrorsely hairy, not glaucous;

basal and proximal cauline 16–60(–80) × 1–3(–4) mm, blade linear, base tapered, margins entire, apex obtuse to acute;

cauline 6–11 pairs, sessile, (2–)10–75 × (0.2–)0.5–3 mm, blade linear, base tapered, apex acuminate.

puberulent or retrorsely hairy, sometimes only along midveins and margins;

basal and proximal cauline 28–68 × 3–9 mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire, apex obtuse to acute;

cauline 6–9 pairs, 32–95 × 4–12 mm, blade lanceolate to linear, base tapered, apex acute.

interrupted, secund, (2–)5–25 cm, axis glabrous or puberulent, verticillasters 3–10, cymes 1- or 2-flowered, 1 or 2 per node;

proximal bracts linear, 4–30 × 0.5–2 mm;

peduncles and pedicels glabrous or puberulent.

± secund, 6–28 cm, axis glandular-pubescent, verticillasters 4–11, cymes 1- or 2-flowered;

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

peduncles and pedicels glandular-pubescent.

calyx lobes ovate, sometimes obovate or truncate, 3–4.5(–5) × 1.5–2.4 mm, glabrous or sparsely puberulent;

corolla bluish violet to violet, lavender, or purple, with reddish purple nectar guides, ventricose, 17–23 mm, glabrous externally, glabrous internally, tube 5–7 mm, throat gradually inflated, slightly constricted at orifice, (5–)7–9 mm diam., rounded abaxially;

stamens: longer pair exserted, pollen sacs opposite, navicular, 1.2–1.5 mm, dehiscing incompletely, connective not splitting, sides glabrous, sutures papillate;

staminode 12–14 mm, exserted, 0.5–0.8 mm diam., tip straight to recurved, glabrous;

style 13–17 mm.

calyx lobes ovate to lanceolate, 5–8 × 2–2.8 mm, glandular-pubescent;

corolla violet to lavender to purple, lined internally abaxially with purple nectar guides, ventricose, 25–35 mm, glabrous internally, tube 7–9 mm, throat abruptly inflated, 9–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, 1.8–2.2 mm, sutures denticulate, teeth to 0.3 mm;

staminode 17–19 mm, included, 0.6–1 mm diam.;

style 15–20 mm.

7–14 × 4–5 mm.

11–15 × 7–9 mm.

= 16.