Flora of North America species comparison

ascending to erect, 10–27 cm, retrorsely hairy or puberulent, not glaucous.

decumbent to ascending or erect, 7–65(–90) cm, glabrous or retrorsely hairy to pubescent, not glaucous.

persistent, 6–9 pairs, distals usually distinctly smaller than proximals, short-petiolate or sessile, 15–55 × 4–16 mm, blade elliptic, base tapered, margins subentire or serrate, apex rounded to obtuse or acute, glabrous, ± glaucous.

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

basal and proximal cauline (25–)30–90(–140) × (3–)6–20(–35) mm, blade oblanceolate to elliptic or lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–8 pairs, short-petiolate or sessile, 35–70(–150) × 3–20(–30) mm, blade oblanceolate to elliptic, lanceolate, or linear, base tapered to clasping, apex obtuse to acute.

± interrupted, secund, 5–14 cm, axis retrorsely hairy proximally, retrorsely hairy and glandular-pubescent distally, verticillasters 3–7, cymes 1-flowered;

proximal bracts ovate to lanceolate, 6–18 × 3–12 mm, margins serrate, sometimes entire;

peduncles and pedicels ascending to erect, glandular-pubescent, sometimes also puberulent.

continuous, secund or cylindric, (1–)3–35 cm, axis glabrous or puberulent, rarely glandular or glandular-pubescent, verticillasters (2–)4–14, cymes 1–4-flowered, 2 per node;

proximal bracts lanceolate, rarely ovate or linear, (15–)20–80 × (1–)2–23 mm;

peduncles and pedicels ascending to erect, glabrous or retrorsely hairy, rarely glandular-pubescent, peduncles to 20 mm, pedicels 1–8 mm.

calyx lobes ovate to lanceolate, 8–14 × 2–3.1 mm, glandular-pubescent;

corolla purple to violet, essentially unlined internally but abaxial ridges usually light purple or white, not personate, funnelform, (25–)30–38 mm, glabrous externally, sparsely white-lanate internally abaxially, tube 6–8 mm, throat 9–10 mm diam.;

stamens included, pollen sacs 1.5–1.7 mm;

staminode 11–13 mm, essentially terete distally, 0.1 mm diam., tip straight, distal 4–6 mm moderately to densely villous, hairs white or yellowish, to 1.5 mm;

style 25–29 mm.

calyx lobes ovate to lanceolate, rarely obovate, (4–)6–11(–13.5) × 2–4 mm, margins erose, apex acute to acuminate or cuspidate, glabrous or ± glandular proximally;

corolla blue to violet, with reddish purple nectar guides, ventricose, 25–35 mm, glabrous externally, glabrous, rarely sparsely white-pilose, internally abaxially, tube 8–13 mm, throat gradually inflated, slightly constricted at orifice, 7–10(–13) mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, sigmoid, (1.8–)2–3 mm, dehiscing incompletely, proximal 1/3 indehiscent, connective not splitting, sides glabrous or sparsely hispidulous, hairs tan, to 0.3 mm, sutures papillate or denticulate, teeth to 0.1 mm;

staminode 14–18 mm, included, 0.6–1 mm diam., tip straight to recurved, glabrous or distal 1–7 mm sparsely pilose, hairs yellow to yellowish orange, to 0.8 mm;

style 18–23 mm.

8–11 × 4–6 mm.

10–16 × 6–8 mm.

= 16.

= 16.