Flora of North America species comparison

ascending to erect, (15–)30–70 cm, glabrous, not glaucous.

erect, 30–65 cm, retrorsely hairy.

basal and cauline, leathery or not, glabrous, not glaucous;

basal and proximal cauline 80–140(–180) × (10–)15–35(–40) mm, blade ovate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 5–7 pairs, sessile, (28–)40–80(–110) × 6–30(–42) mm, blade ovate to lanceolate, base tapered to cordate-clasping, apex acute.

basal and cauline or, sometimes, basal absent or withering, not leathery to ± leathery, glabrous or retrorsely hairy along midvein and, sometimes, along margins;

basal and proximal cauline petiolate, 22–120(–190) × 7–40(–65) mm, blade oblanceolate to elliptic, base tapered, margins entire or serrate to dentate, apex obtuse to acute;

cauline 6–8(–10) pairs, sessile, 30–95(–115) × 7–30 mm, blade ovate to lanceolate to linear, base tapered to cordate clasping, margins entire or serrate, apex acute.

continuous, sometimes interrupted proximally, cylindric, (3–)8–32 cm, axis glabrous, verticillasters 4–10(–16), cymes 2–4(–8)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 12–80 × 2–35 mm;

peduncles and pedicels glabrous.

interrupted, cylindric, 5–20 cm, axis glandular-pubescent, verticillasters (3–)4–6, cymes 2–4(–6)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 14–50 × 6–17 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes lanceolate, 5–8.5(–10) × 1–2 mm, glabrous;

corolla blue to violet, without nectar guides, ventricose, 18–22 mm, glabrous externally, glabrous internally, tube 6–9 mm, throat gradually inflated, not constricted at orifice, 7–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs opposite, navicular, 1.2–1.9 mm, dehiscing incompletely, connective not splitting, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode: 13–15 mm, included, 0.5–0.9 mm diam., tip straight, distal 2–3 mm sparsely pilose, sometimes glabrous, hairs yellow, to 0.5 mm;

style 13–17 mm.

calyx lobes ovate to lanceolate, 6.5–13 × 2.5–4.8 mm, glandular-pubescent;

corolla pink to pinkish red or reddish violet, with red or crimson nectar guides, ventricose, 22–35 mm, glandular-pubescent internally, tube 8–11 mm, throat gradually inflated, not constricted at orifice, 10–13 mm diam., rounded abaxially;

stamens: longer pair exserted, pollen sacs opposite, explanate, 0.9–1.2 mm, dehiscing completely, sutures smooth;

staminode 17–20 mm, included or reaching orifice, 0.4–0.6 mm diam., tip straight to recurved, distal 8–12 mm sparsely to moderately pilose, hairs yellow, to 1 mm;

style 18–24 mm.

8–15 × 5–8 mm.

(7–)11–14 × 5–8.5 mm.

= 16.