Flora of North America species comparison

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

prostrate, spreading, or ascending, 6–12 cm, retrorsely hairy, hairs pointed, sometimes also appressed, white, scalelike.

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.

not leathery, glabrous or sparsely hairy, hairs appressed, white, scalelike abaxially, ± densely hairy, hairs appressed, white, scalelike adaxially;

cauline 1–5 pairs, petiolate, 6–16 × 2–4.5 mm, blade obovate to spatulate, base tapered, apex rounded to mucronate or 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.

continuous, secund, 2–12 cm, axis retrorsely hairy, hairs appressed or spreading, white, scalelike, sometimes also glandular-pubescent distally, verticillasters 3–12, cymes 1–3(or 4)-flowered, 1 per node;

proximal bracts spatulate to oblanceolate, 8–17 × 1.4–4 mm;

peduncles and pedicels spreading to ascending, glandular-pubescent, hairs appressed, white, scalelike.

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 to oblong, 3–5 × 0.7–1 mm, herbaceous-margined, glandular-pubescent and retrorsely hairy, hairs appressed, white, scalelike;

corolla blue to lavender, or violet, lined internally abaxially with reddish violet nectar guides, ampliate, 12–18 mm, yellow-lanate internally abaxially, tube 5–6 mm, throat gradually inflated, 3.5–5 mm diam., 2-ridged abaxially;

stamens reaching orifice or longer pair exserted, filaments glabrous, pollen sacs opposite, navicular to subexplanate, 0.6–0.8 mm, sutures papillate;

staminode 7–8 mm, included, flattened distally, 0.2–0.3 mm diam., tips straight to recurved, distal 6–7 mm pubescent, hairs yellow or orange, to 0.7 mm;

style 11–14 mm.

10–14 × 5–7 mm.

3–5 × 3–4 mm.

2–3 mm.