Flora of North America species comparison

ascending to erect, (17–)30–80 cm, glabrous, not or ± glaucous.

ascending to erect, (5–)9–40 cm, glabrous.

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

basal and proximal cauline 50–170 × 8–25(–35) mm, blade oblanceolate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 3–7 pairs, sessile or proximals short-petiolate, (15–)30–90(–120) × (4–)8–25 mm, blade lanceolate to ovate, base cordate-clasping or proximals tapered, apex acute.

basal and cauline, glabrous;

basal and proximal cauline 15–140 × 2–27 mm, blade spatulate to oblanceolate or lanceolate, base tapered, apex obtuse to acute, sometimes rounded or mucronate;

cauline 2–4(–6) pairs, sessile, (11–)18–85 × (3–)5–28(–32) mm, blade ovate to lanceolate, base clasping or cordate-clasping, apex acuminate to acute, sometimes mucronate.

continuous or interrupted, secund, (3–)7–27 cm, axis glabrous, verticillasters (3–)5–14, cymes (2 or)3–6-flowered, 2 per node;

proximal bracts lanceolate, 15–65 × 2–26 mm;

peduncles and pedicels glabrous, peduncles to 18 mm, pedicels 3–18 mm.

± interrupted, cylindric, (2–)5–20 cm, axis glabrous, verticillasters (2–)4–10, cymes 2–5-flowered;

proximal bracts orbiculate to ovate or lanceolate, 19–70 × 7–28 mm;

peduncles and pedicels glabrous, peduncles to 3 mm.

calyx lobes obovate to ovate, 2.5–4.5 × 2–3.4(–3.8) mm, apex mucronate, sometimes acute to acuminate, glabrous;

corolla blue to violet or purple, without nectar guides, ventricose, 24–30(–34) mm, glabrous externally, glabrous internally, tube 7–10 mm, throat gradually inflated, not constricted at orifice, 8–11 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, sigmoid, 1.8–2.7(–3) mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides hispid to hispidulous, hairs white or tan, to 0.2 mm, sutures denticulate, teeth to 0.1 mm;

staminode 14–17 mm, included, 0.5–0.7 mm diam., tip straight, distal 4–7 mm sparsely pilose, hairs yellow, to 1 mm;

style 17–23 mm.

calyx lobes ovate to lanceolate, 3–7.5 × (0.8–)1.2–1.8 mm, margins entire or erose, narrowly scarious, glabrous;

corolla blue to violet, with reddish violet nectar guides, tubular-funnelform, (10–)13–15(–18) mm, glabrous externally, glabrous or sparsely white-villous internally abaxially, tube 4–6 mm, throat gradually inflated, 4–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice to slightly exserted, pollen sacs opposite, 0.7–1.2 mm, sutures papillate;

staminode 8–11 mm, reaching orifice or slightly exserted, 0.8–1.5 mm diam., tip strongly recurved, distal 3–4 mm densely villous, hairs golden yellow, to 1.5 mm, hairs on proximal part of staminode mostly along margins;

style 8–10 mm.

9–13 × 5–7 mm.

9–13 × 5–8 mm.