Flora of North America species comparison

prostrate, decumbent, ascending, or erect, 2–14(–20) cm, pubescent to densely retrorsely hairy.

decumbent to ascending, (15–)20–48 cm, glabrous.

basal and cauline, not leathery, retrorsely hairy;

basal and proximal cauline petiolate, (5–)10–40(–55) × 4–14 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex obtuse to acute, rarely rounded;

cauline 1–3 pairs, sessile, 12–38 × 3–7 mm, blade oblanceolate, not arcuate, base tapered, margins entire, apex obtuse to acute.

essentially cauline, basal absent or reduced, glabrous;

basal and proximal cauline (25–)55–130(–175) × 3–25 mm, blade linear to lanceolate, base tapered, apex acute to acuminate;

cauline 2–10 pairs, sessile, 60–110(–120) × 7–30 mm, blade lanceolate to linear, base clasping, apex acuminate to long-acuminate.

continuous, cylindric, 0.5–8(–10) cm, axis retrorsely hairy, verticillasters 1–4(–7), cymes 1- or 2(–4)-flowered, 1 or 2 per node;

proximal bracts oblanceolate to lanceolate, 12–34 × 2–8 mm;

peduncles and pedicels retrorsely hairy, sometimes sparsely glandular-pubescent.

continuous, cylindric, (2–)6–21(–34) cm, axis glabrous, verticillasters (2–)6–10(–17), cymes 1–8-flowered;

proximal bracts ovate, 58–120 × 20–45 mm;

peduncles and pedicels glabrous.

calyx lobes lanceolate, 4–6 × 1–1.9 mm, retrorsely hairy, sometimes sparsely glandular-pubescent;

corolla light blue to blue or violet, with, rarely without, faint blue or reddish purple nectar guides, funnelform, 14–20 mm, glandular-pubescent externally, sparsely white-lanate internally abaxially, tube 6–7 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 0.9–1.2 mm, dehiscing completely, sutures papillate;

staminode 7–10 mm, included or reaching orifice, 0.7–0.9 mm diam., tip recurved to coiled, distal 5–8 mm sparsely pubescent to lanate, hairs yellow or yellow-orange, to 1 mm;

style 10–12 mm.

calyx lobes lanceolate to linear, 8–13 × 1–3 mm, margins entire or erose, herbaceous or scarious, glabrous;

corolla lavender to bluish, usually with magenta nectar guides, ampliate, 21–28 mm, glabrous externally, glabrous internally, tube 7–9 mm, throat abruptly inflated, 9–11 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 1.1–2 mm, sutures papillate;

staminode 13–16 mm, included, 1.2–3 mm diam., tip recurved, distal 0.1–5 mm sparsely to densely villous, hairs golden yellow, to 1 mm, rarely glabrous;

style 13–23 mm.

4–6 × 4–5 mm.

8–12 × 5–9 mm.

= 16.