Flora of North America species comparison

ascending to erect, 6–40 cm, retrorsely hairy, not glaucous.

ascending to erect, 3–55(–70) cm, glabrous or ± retrorsely hairy, not glaucous.

basal and cauline, alternate or mostly opposite, not leathery, retrorsely hairy;

basal and proximal cauline 10–50(–70) × 1–4 mm, blade spatulate to oblanceolate or linear, base tapered, margins entire, revolute, apex rounded to obtuse or acute;

cauline 8–12 pairs (or 13–25 leaves when alternate), sessile, 7–35 × 1–3 mm, blade oblanceolate to linear, base tapered, margins entire, apex acute.

basal and cauline, basal sometimes poorly developed, ± leathery or not, glabrous, puberulent, or retrorsely hairy;

basal and proximal cauline 9–90(–115) × 2–19 mm, blade spatulate to oblanceolate, lanceolate, or elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 2–6 pairs, sessile or proximals sometimes short-petiolate, 6–85 × 1–17 mm, blade oblanceolate to spatulate, obovate, oblong, elliptic, lanceolate, or linear, base tapered to clasping, margins entire, apex rounded to obtuse or acute.

interrupted, cylindric to secund, 2–12 cm, axis glandular-pubescent and retrorsely hairy, verticillasters 3–12, cymes 1(or 2)-flowered, 1 or 2 per node;

proximal bracts lanceolate to linear, 5–18 × 0.5–3 mm, margins entire;

peduncles and pedicels erect, glandular-pubescent and/or retrorsely hairy.

interrupted, cylindric, 0.5–23 cm, axis glabrous or retrorsely hairy, verticillasters 1–8(–11), cymes 3–11-flowered, 2 per node;

proximal bracts lanceolate to linear, 10–50(–60) × 1–8(–16) mm, margins entire;

peduncles and pedicels erect, glabrous, puberulent, or retrorsely hairy.

calyx lobes lanceolate, 5–8.5 × 1.7–2.7 mm, puberulent and glandular-pubescent;

corolla violet to blue or purple, with or without reddish nectar guides, funnelform, 15–22 mm, glandular-pubescent externally, glandular-pubescent internally, tube 3–4 mm, throat gradually inflated, 5–6 mm diam., slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular to subexplanate, 0.8–1 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 8–11 mm, included, 0.4–0.6 mm diam., tip straight, distal 3–5 mm sparsely to densely pubescent, hairs yellow, to 1 mm;

style 10–12 mm.

calyx lobes ovate to obovate or lanceolate, 1.2–5(–5.5) × 0.5–2 mm, apex truncate, obtuse, acute, acuminate, cuspidate, caudate, or mucronate, glabrous or puberulent to retrorsely hairy;

corolla violet to blue or purple, with, sometimes without, reddish purple nectar guides, funnelform, 7–11 mm, glabrous externally, moderately white- or yellow-lanate internally abaxially, tube 2–3 mm, throat slightly inflated, 2–3 mm diam., 2-ridged abaxially;

stamens included, pollen sacs opposite, explanate, 0.3–0.6 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth or papillate;

staminode 4–6 mm, included, 0.2–0.3 mm diam., tip straight to slightly recurved, distal 0.5–1 mm pilose, hairs yellow or golden yellow, to 0.6 mm, rarely glabrous;

style 4–7 mm.

5–9 × 3–5.3 mm, glabrous.

3–5 × 2–4 mm, glabrous.

= 16.