Flora of North America species comparison

prostrate or ascending, 4–15(–25) cm, retrorsely hairy, hairs appressed, white, scalelike.

ascending to erect, 45–150(–200) cm, glaucous.

not leathery, densely retrorsely hairy, hairs appressed, white, scalelike;

cauline 1–5 pairs, petiolate, 6–25(–33) × 2–6.5 mm, blade obovate to spatulate, base tapered, apex mucronate, sometimes rounded or obtuse.

glabrous, glaucous;

basal and proximal cauline 75–130 × 18–50 mm, blade ovate to elliptic, base tapered, margins entire, apex rounded to obtuse;

cauline 3–7 pairs, proximals usually short-petiolate, distal ones sessile, 24–145 × 12–70 mm, blade elliptic to ovate, base tapered to clasping, margins entire, apex obtuse to acute.

continuous, secund, (1–)2–12 cm, axis retrorsely hairy, hairs appressed, white, scalelike, sometimes also glandular-pubescent distally, verticillasters (1–)3–12, cymes 1–3(–5)-flowered, 1 per node;

proximal bracts spatulate to oblanceolate, 5–19 × 1.5–4 mm;

peduncles and pedicels spreading to ascending, retrorsely hairy, hairs pointed, and, sometimes, sparsely glandular-pubescent.

interrupted, cylindric, 14–60(–80) cm, axis glabrous, verticillasters 7–20, cymes 2–8(–18)-flowered;

proximal bracts ovate to lanceolate, 15–33 × 4–20 mm;

peduncles and pedicels ascending to erect, glabrous or sparsely glandular-pubescent.

calyx lobes lanceolate, 4–6 × 1–1.7 mm, herbaceous- or narrowly scarious-margined, sparsely glandular-pubescent and retrorsely hairy, hairs appressed, white, scalelike;

corolla blue to violet or purple, lined internally abaxially with reddish violet nectar guides, ampliate, 10–18 mm, yellow-lanate internally abaxially, tube 6–7 mm, throat gradually inflated, 4.5–6 mm diam., 2-ridged abaxially;

stamens reaching orifice or longer pair exserted, filaments glabrous, pollen sacs divergent, navicular, 0.8–1.2(–1.4) mm, sutures papillate;

staminode 8–9 mm, exserted, flattened distally, 0.2–0.3 mm diam., tip recurved, distal 6–8 mm pubescent, hairs yellow or orange, to 0.8 mm;

style 10–13 mm.

calyx lobes elliptic to ovate, 3.5–5(–5.8) × 1.8–2.4 mm, margins entire or erose, sparsely glandular-pubescent;

corolla scarlet to orange, without nectar guides, bilaterally symmetric, bilabiate, tubular-funnelform, 20–28 mm, sparsely glandular-pubescent externally, glandular-pubescent internally, tube 4–7 mm, throat gradually inflated, 5–6 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs explanate, 1–1.2 mm, sutures smooth;

staminode 14–20 mm, flattened distally, 0.3–0.6 mm diam., tip straight, glabrous;

style 16–20 mm.

3.5–5.5 × 3–4 mm.

7–12 × 5–8 mm.