Flora of North America species comparison

ascending or erect, rarely decumbent, (8–)16–50(–60) cm, glabrous, not glaucous.

ascending to erect, (6–)15–42 cm, ± retrorsely hairy or pubescent, not glaucous.

basal and cauline, or basal not persisting, ± leathery or not, glabrous, not glaucous;

basal and proximal cauline (18–)35–180 × (3–)6–15(–24) mm, blade oblanceolate to oblong or linear, base tapered, margins entire, apex obtuse to acute;

cauline 3–5(or 6) pairs, sessile or proximals sometimes short-petiolate, 34–115 × 2–14 mm, blade oblanceolate to oblong or linear, base tapered, apex obtuse to acute.

basal and cauline, ± leathery or not, densely retrorsely hairy, not glaucous;

basal and proximal cauline 20–70 × 3–16(–22) mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 2–5 pairs, short-petiolate or sessile, 19–72 × 3–9 mm, blade oblanceolate to lanceolate, base tapered to truncate, apex obtuse to acute.

interrupted or continuous, secund, (1–)6–18(–25) cm, axis glabrous or sparsely glandular-pubescent, verticillasters (2 or)3–7(–9), cymes (1 or)2–5-flowered, 2 per node;

proximal bracts lanceolate to linear, 25–70(–95) × (1–)3–12(–20) mm;

peduncles and pedicels glabrous or glandular-pubescent.

continuous, secund, (4–)10–22 cm, axis retrorsely hairy to retrorsely pubescent or pubescent, verticillasters (3–)5–8, cymes 1–5-flowered, 2 per node;

proximal bracts oblanceolate to lanceolate, 25–70 × 3–9 mm;

peduncles and pedicels retrorsely hairy and glandular-pubescent.

calyx lobes ovate to lanceolate, (4–)4.8–11 × 1.3–3.2(–3.7) mm, glabrous or glandular-pubescent;

corolla blue to lavender, with reddish purple nectar guides, ventricose, 18–33 mm, sparsely to moderately glandular-pubescent externally, glabrous, rarely sparsely white-villous, internally abaxially, tube 6–11 mm, throat gradually inflated, slightly constricted at orifice, 6–11 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent to opposite, navicular to navicular-sigmoid, (1.3–)1.5–2.4 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides moderately pubescent, hairs white, to 0.8 mm, sutures denticulate, teeth to 0.1 mm;

staminode 11–19 mm, reaching orifice, 0.3–0.8 mm diam., tip straight to recurved, distal 3–7 mm sparsely to moderately villous, hairs yellow, to 0.8 mm;

style 12–22 mm.

calyx lobes ovate, 6–8.5 × 2.8–3.8 mm, glandular-pubescent;

corolla blue to lavender, with or without faint lavender nectar guides, ventricose, 24–30 mm, glandular-pubescent externally, glabrous internally, tube 8–12 mm, throat gradually inflated, slightly constricted at orifice, 6–9(–12) mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs divergent, sigmoid, 2–2.5 mm, dehiscing incompletely, proximal 1/5–1/4 indehiscent, connective not splitting, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 16–18 mm, included, 0.5–0.8 mm diam., tip straight, glabrous;

style 20–24 mm.

6–10 × 5–6.5 mm.

12–15 × 8–10 mm.