Flora of North America species comparison

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

ascending to erect, 12–35 cm, glabrous.

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.

basal and cauline, glabrous;

basal and proximal cauline 20–110 × 14–40(–60) mm, blade spatulate to obovate, base tapered, apex rounded, mucronate, or retuse;

cauline 1–3 pairs, sessile, 20–58 × 8–23 mm, blade ovate to obovate or lanceolate, base tapered to cordate-clasping, apex obtuse to mucronate or retuse.

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.

continuous, sometimes interrupted, cylindric, 3–15 cm, axis glabrous, verticillasters 5–10, cymes 2–6-flowered;

proximal bracts ovate to lanceolate, 11–38 × 5–13 mm;

peduncles and pedicels glabrous, rarely obscurely glandular distally.

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.

calyx lobes ovate to lanceolate, 4.5–8 × 1.8–2.4 mm, margins erose, broadly scarious, glabrous rarely obscurely glandular-pubescent proximally or along margins;

corolla blue to violet, rarely pink, with or without reddish or purple nectar guides, tubular-funnelform, 16–20(–22) mm, obscurely glandular externally or glabrous, sparsely white-villous internally abaxially or glabrous, tube 6–7 mm, throat gradually inflated, 5–6 mm diam., rounded or slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, 0.8–1.4 mm, sutures papillate;

staminode 8–10 mm, included or reaching orifice, 0.4–1 mm diam., tip strongly recurved, distal 3–4 mm moderately to densely pubescent, hairs golden yellow, to 0.7 mm;

style 8–10 mm.

6–8 × 2.5–4.5 mm.

8–12 × 6–8 mm.