Flora of North America species comparison

ascending to erect, 15–45 cm, retrorsely hairy, hairs pointed, not glaucous.

ascending to erect, 15–55 cm, glabrous, glaucous.

cauline, opposite or subalternate, retrorsely hairy, hairs pointed, not glaucous;

cauline 4–8 pairs, short-petiolate or sessile, 16–70 × 1–8(–14) mm, blade lanceolate to linear, base tapered, margins entire, apex obtuse to acute.

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

basal and proximal cauline (15–)30–115 × 4–25 mm, blade elliptic to oblanceolate or spatulate, base tapered, margins entire, apex obtuse to acute;

cauline 3–6 pairs, sessile or proximals short-petiolate, (17–)40–72 × 9–28 mm, blade ovate to lanceolate, base tapered to clasping, margins entire, apex obtuse to acute.

interrupted, cylindric, 4–15 cm, axis puberulent or retrorsely hairy, verticillasters 3–10, cymes 1–5(–7)-flowered, 2 per node;

proximal bracts lanceolate to linear, 7–50 × 1–6 mm;

peduncles and pedicels ascending to erect, puberulent or retrorsely hairy.

continuous or interrupted, cylindric, 2–21 cm, axis glabrous, verticillasters 1–6, cymes (2 or)3–8-flowered, 2 per node;

proximal bracts lanceolate, 9–45 × 4–13 mm, margins entire;

peduncles and pedicels erect, glabrous.

calyx lobes ovate, 3–5.5 × 1.4–2.3 mm, glabrous or sparsely puberulent;

corolla blue to violet or purple, without nectar guides, ampliate, 16–21 mm, glabrous externally, glabrous internally, tube 4–5 mm, throat gradually inflated, 5–6 mm diam., slightly 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs parallel, 1–1.5(–1.8) mm, distal 1/2–2/3 indehiscent, sides hispidulous, hairs white, to 0.1 mm near filament attachment, sutures denticulate, teeth to 0.1 mm;

staminode 10–12 mm, reaching orifice or barely exserted, 0.5–0.7 mm diam., glabrous;

style 11–13 mm.

calyx lobes ovate to lanceolate, 2.5–4.5 × 1–2.4 mm, glabrous;

corolla violet to blue or purple, with light violet nectar guides, funnelform, 11–15 mm, glabrous externally, sparsely whitish or yellowish pubescent internally abaxially, tube 3–4 mm, throat gradually inflated, 3.5–5 mm diam., 2-ridged abaxially;

stamens: longer pair exserted, pollen sacs opposite, navicular, 0.5–0.7 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 7–8 mm, reaching orifice, 0.2–0.3 mm diam., tip straight to slightly recurved, distal 0.5–2 mm sparsely to densely pilose, hairs golden yellow, to 0.8 mm;

style 8–10 mm.

6–7 × 4.5–6 mm.

5–6 × 3.5–4.5 mm, glabrous.

= 16.

= 48.