Flora of North America species comparison

decumbent to ascending or erect, (5–)10–30(–47) cm, puberulent or retrorsely hairy, hairs pointed, not glaucous.

erect, sometimes ascending, 30–80 cm, glabrous, slightly glaucous.

cauline, opposite, glabrous, sometimes proximals puberulent, hairs pointed, not glaucous;

cauline 2–7 pairs, short-petiolate or sessile, 11–48(–60) × 2–12 mm, blade oblanceolate to spatulate or obovate, rarely linear, base tapered, margins entire, apex rounded to obtuse or acute.

glabrous, slightly glaucous;

basal and proximal cauline 35–110 × 3–11 mm, blade oblanceolate to lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–6 pairs, sessile or proximals short-petiolate, 27–85 × 1–6 mm, blade linear, base tapered, apex acute, rarely obtuse.

continuous or interrupted, cylindric to ± secund, (1–)2–15(–25) cm, axis glabrous or retrorsely hairy, verticillasters 2–8, cymes 1–4-flowered, 2 per node;

proximal bracts lanceolate, 10–35 × 1–4 mm;

peduncles and pedicels ascending to erect, peduncles glabrous or sparsely retrorsely hairy, pedicels glabrous or papillate distally.

± secund, 13–30 cm, axis glabrous, verticillasters 5–10, cymes 1- or 2(or 3)-flowered;

proximal bracts linear, 5–30 × 1–2 mm;

peduncles and pedicels ascending to erect, glabrous.

calyx lobes ovate to lanceolate, 3–5.5 × 0.9–2.2 mm, margins entire or erose, scarious, apex acuminate to caudate, glabrous;

corolla lavender to blue or violet, with or without faint lavender nectar guides, funnelform to ventricose, 14–26 mm, glabrous externally, glabrous internally, tube 5–8 mm, throat gradually inflated, 6–8(–10) mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 0.9–1.9 mm, distal 1/2–2/3 indehiscent, sides glabrous or puberulent, hairs white, to 0.1 mm, sutures denticulate, teeth to 0.2 mm;

staminode 10–15 mm, included or reaching orifice, 0.6–0.9 mm diam., glabrous;

style 12–18 mm.

calyx lobes ovate to lanceolate, 3.5–6 × 1.8–2.4 mm, margins erose, glabrous;

corolla red to scarlet or orange, rarely yellow, without nectar guides, bilaterally symmetric, strongly bilabiate, salverform, 30–40 mm, glabrous internally, tube 5–7 mm, throat 4–6 mm diam., not constricted at orifice, rounded abaxially, abaxial lobes spreading to reflexed, adaxial lobes projecting, galeate;

stamens exserted (but concealed by projecting adaxial lip), pollen sacs opposite, proximal 1/4–1/3 indehiscent, 1.6–2 mm, sides glabrous, sutures papillate;

staminode 11–14 mm, included, tip straight, glabrous;

style 20–28 mm, exserted.

6–8 × 2.5–4.5 mm.

7–10 × 4–6 mm.

= 16.