Flora of North America species comparison

rhizomelike.

decumbent, ascending, or weakly erect, 4–18 cm, retrorsely hairy, not glaucous.

ascending to erect, 10–35 cm, glabrous or sparsely retrorsely hairy, hairs white, scalelike.

cauline, not leathery, glabrate, retrorsely hairy, or puberulent;

cauline 2–4 pairs, petiolate or sessile, 7–28 × 3–12 mm, blade spatulate to oblanceolate, base tapered to clasping, margins entire, apex rounded or obtuse to acute.

leathery, glabrous, rarely sparsely retrorsely hairy, hairs white, scalelike abaxially, densely puberulent, hairs white, scalelike adaxially;

cauline 10–30 pairs, petiolate, 5–18 × 1–1.5 mm, blade oblanceolate to linear, base tapered, apex mucronate.

interrupted or continuous, ± secund, 1–3 cm, axis ± glandular-pubescent, verticillasters 1 or 2(or 3), cymes 1- or 2-flowered, 1 or 2 per node;

proximal bracts lanceolate, 17–23 × 4–10 mm, margins entire;

peduncles and pedicels ascending to erect, retrorsely hairy and glandular-pubescent.

continuous or interrupted, ± secund, 2–15 cm, axis glandular-pubescent, verticillasters 5–13, cymes 1–3-flowered, 1 per node;

proximal bracts oblanceolate to linear, 5–12 × 0.5–1 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes lanceolate, 6–10 × 1.3–2 mm, glandular-pubescent;

corolla lavender or bluish lavender to lavender-purple, without nectar guides, bilabiate, not personate, tubular-funnelform, 15–20 mm, glandular-pubescent externally, densely white-lanate internally abaxially, tube 4–6 mm, throat gradually inflated, 5–6 mm diam., prominently 2-ridged abaxially;

stamens included, pollen sacs opposite, subexplanate, 0.7–0.9 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 8–9 mm, included, 0.3–0.4 mm diam., tip recurved, distal 4–5 mm moderately to densely lanate, hairs yellow, to 1 mm;

style 11–12 mm.

calyx lobes ovate to lanceolate, 2.5–3.5 × 1.2–1.8 mm, scarious-margined, glandular-pubescent, hairs pointed;

corolla lavender to violet or purple, lined internally abaxially with reddish purple nectar guides, tubular-funnelform, 9–14 mm, densely yellow- or whitish lanate internally abaxially, tube 3–5 mm, throat gradually inflated, 3.5–5 mm diam., slightly 2-ridged abaxially;

stamens included, filaments glabrous, pollen sacs opposite, navicular, 0.5–0.8 mm, sutures papillate;

staminode 7–8 mm, included or reaching orifice, flattened distally, 0.2–0.4 mm diam., tip straight to recurved, distal 5–6 mm densely pilose, hairs golden yellow, to 1 mm;

style 8–11 mm.

6–8 × 4–5 mm, glabrous.

5–8 × 3–4.8 mm.

= 16.