Flora of North America species comparison

ascending to erect, 15–40(–65) cm, glabrous, not glaucous.

decumbent to ascending or erect, (5–)10–30(–47) cm, puberulent or retrorsely hairy, hairs pointed, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline (23–)40–90(–120) × 6–14(–24) mm, blade spatulate to elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 3–6 pairs, sessile or proximals short- to long-petiolate, 24–115 × 4–15 mm, blade oblanceolate to lanceolate, base tapered to truncate or clasping, margins entire, apex obtuse to acute.

cauline, opposite, glabrous, sometimes proximals puberulent, hairs pointed, not glaucous;

cauline 2–7 pairs, short-petiolate or sessile, 11–48(–60) × 2–12 mm, blade oblanceolate to spatulate or obovate, rarely linear, base tapered, margins entire, apex rounded to obtuse or acute.

interrupted, cylindric, 6–15 cm, axis glabrous, verticillasters 2–6, cymes 3–11-flowered, 2 per node;

proximal bracts lanceolate, 8–50 × 1–8 mm, margins entire;

peduncles and pedicels erect, glabrous.

continuous or interrupted, cylindric to ± secund, (1–)2–15(–25) cm, axis glabrous or retrorsely hairy, verticillasters 2–8, cymes 1–4-flowered, 2 per node;

proximal bracts lanceolate, 10–35 × 1–4 mm;

peduncles and pedicels ascending to erect, peduncles glabrous or sparsely retrorsely hairy, pedicels glabrous or papillate distally.

calyx lobes ovate to lanceolate, 3–5.5 × 1.2–2.1 mm, apex acute to short-caudate, glabrous;

corolla white or lavender, without nectar guides, funnelform, 10–15 mm, glabrous externally, moderately yellow- or white-lanate internally abaxially, tube 4–5 mm, throat slightly inflated, 3–4 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs opposite, navicular, 0.6–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 6–7 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.5–3 mm moderately pilose, hairs yellow, to 0.8 mm, rarely glabrous;

style 7–8 mm.

calyx lobes ovate to lanceolate, 3–5.5 × 0.9–2.2 mm, margins entire or erose, scarious, apex acuminate to caudate, glabrous;

corolla lavender to blue or violet, with or without faint lavender nectar guides, funnelform to ventricose, 14–26 mm, glabrous externally, glabrous internally, tube 5–8 mm, throat gradually inflated, 6–8(–10) mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 0.9–1.9 mm, distal 1/2–2/3 indehiscent, sides glabrous or puberulent, hairs white, to 0.1 mm, sutures denticulate, teeth to 0.2 mm;

staminode 10–15 mm, included or reaching orifice, 0.6–0.9 mm diam., glabrous;

style 12–18 mm.

4–7 × 3–4 mm, glabrous.

6–8 × 2.5–4.5 mm.

= 32.