Flora of North America species comparison

ascending to erect, 13–50(–70) cm, glabrous, glaucous.

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

basal and cauline, basal sometimes few, opposite, glabrous, glaucous;

basal and proximal cauline 15–60 × 2–10(–20) mm, blade obovate to oblanceolate or linear, base tapered, margins entire, apex obtuse to acute;

cauline 3–20 pairs, sessile or proximals short-petiolate, 10–90 × 2–20 mm, blade elliptic to ovate, lanceolate, or linear, base tapered to clasping or cordate-clasping, margins entire, apex obtuse to acute.

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.

interrupted or continuous, secund, (3–)6–31 cm, axis glabrous, verticillasters 3–10, cymes 1–3(or 4)-flowered, 2 per node;

proximal bracts ovate to lanceolate, 4–50 × 1–32 mm;

peduncles and pedicels ascending to erect, glabrous.

± 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 oblong or obovate, 2.5–6.5 × 1.4–3.2 mm, glabrous;

corolla violet to blue or purple, with or without purple nectar guides, funnelform to ventricose, 18–35 mm, glabrous externally, glabrous internally, tube 7–9 mm, throat gradually inflated, 8–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or exserted, filaments glabrous, pollen sacs parallel, 1.8–3.5 mm, distal 1/3–1/2 indehiscent, sides hispidulous to pilose, hairs white, to 0.8 mm near filament attachment, sutures denticulate, teeth to 0.3 mm;

staminode 12–19 mm, included, 0.4–0.6 mm diam., glabrous;

style 16–22 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.

7–11 × 14–6 mm.

(6–)8–11 × 4.5–7 mm.