Flora of North America species comparison

ascending to erect, (10–)15–57 cm, glabrous.

ascending to erect, 8–28(–40) cm, retrorsely hairy.

basal and cauline, glabrous;

basal and proximal cauline 18–180 × 5–45(–53) mm, blade spatulate to lanceolate, base tapered, apex rounded to obtuse, acute, or mucronate;

cauline 2–5 pairs, short-petiolate or sessile, 15–80 × 7–32 mm, blade obovate, ovate, oblanceolate, or lanceolate, base tapered, clasping, or cordate-clasping, apex acute to rounded or mucronate.

basal and cauline, not leathery, retrorsely hairy, hairs sometimes appressed, white, scalelike, sometimes basal and proximal cauline glabrate or glabrous abaxially;

basal and proximal cauline petiolate, 15–60(–78) × 4–12(–17) mm, blade spatulate to oblanceolate, base tapered, margins entire or dentate-serrate, apex rounded to obtuse or acute;

cauline 3 or 4 pairs, sessile or proximals short-petiolate, 20–50(–75) × 2–5(–10) mm, blade lanceolate to oblanceolate, base tapered to clasping, margins entire or obscurely and remotely dentate, apex obtuse to acute.

continuous or interrupted, cylindric, (5–)9–27 cm, axis glabrous, verticillasters (2–)4–10, cymes (1–)3–6-flowered;

proximal bracts ovate to lanceolate or oblong, 9–46 × 7–15 mm;

peduncles and pedicels glabrous, peduncles to 26 mm.

± interrupted, cylindric, (3–)6–18 cm, axis glandular-pubescent and, sometimes, retrorsely hairy, verticillasters 3–6, cymes 2–5-flowered, 2 per node;

proximal bracts lanceolate, 18–46 × 2–12 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes ovate to lanceolate, (2.5–)4–7 × 1.8–2.8 mm, margins entire or erose, broadly scarious, apex acute to acuminate or caudate, glabrous;

corolla blue to violet, sometimes lavender, with or without reddish violet nectar guides, tubular-funnelform to ventricose, 12–20 mm, glabrous externally, glabrous internally or sparsely white-villous abaxially, tube 4–6 mm, throat gradually inflated, 5–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, (0.7–)1–1.5 mm, sutures smooth or papillate;

staminode 8–12 mm, reaching orifice or slightly exserted, (0.2–)0.5–2 mm diam., tip recurved, prominently bifurcate, distal 4–8 mm densely villous, hairs yellow to golden yellow, to 2.5 mm;

style 11–15 mm.

calyx lobes lanceolate, 5.5–8 × 1.2–2 mm, glandular-pubescent;

corolla light blue to bluish purple or magenta, with reddish violet nectar guides, ventricose, 14–22 mm, sparsely white-lanate internally abaxially, tube 5–7 mm, throat abruptly inflated, not constricted at orifice, (3–)5–7 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, explanate, 0.7–1(–1.2) mm, dehiscing completely, sutures smooth;

staminode 8–9 mm, exserted, 0.3–0.5 mm diam., tip straight to recurved, distal 5–7 mm moderately to densely pilose, hairs yellow or orangish yellow, to 1.2 mm;

style 9–10 mm.

10–14 × 5–7 mm.

(6–)8–11 × 4.5–7 mm.

2–3 mm.