Flora of North America species comparison

ascending to erect, (9–)20–60 cm, glabrous or ± scabrous, especially distally.

ascending to erect, 5–35 cm, puberulent.

basal and cauline, glabrous, sometimes scabrous;

basal and proximal cauline (14–)30–95 × 4–15(–24) mm, blade oblanceolate to elliptic, base tapered, apex obtuse to acute or mucronate;

cauline (2 or)3–6(or 7) pairs, sessile, 18–60(–85) × (4–)8–28 mm, blade ovate to lanceolate, base tapered to cordate-clasping, apex acute to acuminate.

basal and cauline, ± leathery, ± retrorsely hairy, sometimes glabrate abaxially;

basal and proximal cauline petiolate, 15–55 × 6–25 mm, blade elliptic to broadly ovate, base tapered, rarely truncate, margins entire or remotely and obscurely serrate, apex obtuse to acute;

cauline 2 or 3 pairs, sessile, 25–75 × 10–21 mm, blade lanceolate to oblanceolate, rarely ovate, base truncate to subcordate-clasping, margins entire or obscurely dentate, apex obtuse to acute.

continuous or interrupted, cylindric, 6–25(–30) cm, axis glabrous, rarely scabrous or glutinous, verticillasters (5–)7–15, cymes (2–)4–8(–12)-flowered;

proximal bracts ovate to lanceolate, 14–60 × 9–30 mm, margins entire, apex obtuse to acuminate or caudate;

peduncles and pedicels glabrous or scabrous, sometimes also glutinous, peduncles to 4 mm.

continuous or interrupted, cylindric, 6–18 cm, axis glandular-pubescent, verticillasters 2–8, cymes (1–)3–7-flowered, 2 per node;

proximal bracts lanceolate to ovate, 13–38 × 9–20 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes lanceolate, (3.2–)4.5–10 × 1.2–3.2(–3.8) mm, margins entire or erose, herbaceous or narrowly scarious, glabrous or scabrous proximally and, sometimes, along margins, sometimes also glutinous;

corolla blue to violet or purple, with reddish purple nectar guides, tubular-funnelform, 11–20 mm, glabrous externally, glabrous internally, tube 5–9 mm, throat gradually inflated, 4–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice to slightly exserted, pollen sacs opposite, navicular, 0.7–1.3(–1.5) mm, sutures papillate;

staminode 6–12 mm, reaching orifice, 0.6–1 mm diam., tip recurved, distal 1.5–3.5 mm densely pilose, hairs golden yellow, to 0.6 mm, hairs on proximal part of staminode mostly along margins;

style 8–15 mm.

calyx lobes lanceolate, 5–7.5 × 0.9–1.8 mm, glandular-pubescent;

corolla pink to rose red or rose purple, with reddish nectar guides, tubular-funnelform, 12–17 mm, sparsely white-lanate internally abaxially, tube 4–5 mm, throat gradually inflated, not constricted at orifice, 2.5–4 mm diam., slightly 2-ridged abaxially;

stamens included, pollen sacs opposite, subexplanate to explanate, 0.6–0.7 mm, dehiscing completely, sutures smooth;

staminode 7–9 mm, included, 0.2–0.3 mm diam., tip straight to recurved, distal 5–6 mm densely pilose, hairs golden yellow, to 0.8 mm;

style 4–6 mm.

7–13 × 4–7 mm.

6–9 × 4–5.5 mm.