Flora of North America species comparison

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

ascending to erect, 30–140(–160) cm, glaucous.

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.

glabrous, glaucous;

basal and proximal cauline 40–160 × 14–40 mm, blade spatulate to oblanceolate or elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 3–8 pairs, sessile, (17–)44–115 × (4–)23–45 mm, blade ovate to oblanceolate or lanceolate, base tapered to cordate-clasping to connate-perfoliate, margins entire, apex rounded or 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.

interrupted, cylindric, (15–)30–60(–90) cm, axis glabrous, verticillasters 9–12(–20), cymes (1–)3–9-flowered;

proximal bracts ovate to lanceolate, 11–55 × 4–30 mm;

peduncles and pedicels ascending to erect, glabrous or pedicels sparsely 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 ovate to lanceolate, 2.8–5 × 1.5–2.1 mm, margins entire or erose, sparsely glandular-pubescent proximally, sometimes glabrous;

corolla orangish pink to red, without nectar guides, nearly radially symmetric, weakly bilabiate, tubular-funnelform, 17–22 mm, glandular-pubescent externally, glandular-pubescent internally abaxially, tube 5–7 mm, throat slightly inflated, 4–6 mm diam., rounded abaxially;

stamens included, pollen sacs explanate, 1–1.5 mm, sutures smooth;

staminode 8–11 mm, flattened distally, 0.6–1 mm diam., tip straight, distal 2–3 mm retrorsely hairy, hairs yellow or whitish, to 1.5 mm;

style 10–11 mm.

7–13 × 4–7 mm.

10–13 × 5–8 mm.

= 16.