Flora of North America species comparison

ascending to erect, 4–40(–70) cm, glabrous or retrorsely hairy, not glaucous.

ascending, 7–20(–28) cm, retrorsely hairy, hairs appressed, white, scalelike, not glaucous.

basal and cauline, not leathery, glabrous;

basal and proximal cauline 45–125 × 5–26 mm, blade elliptic to oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 4–7 pairs, sessile or proximals short-petiolate, (7–)12–86 × (2–)3–20(–25) mm, blade oblanceolate to lanceolate or elliptic, rarely ovate, base tapered to truncate, margins entire, apex obtuse to acute.

cauline, opposite, glabrous abaxially, glabrate or retrorsely hairy, hairs appressed, white, scalelike, adaxially, not glaucous;

cauline 4–7 pairs, short-petiolate or sessile, 17–35 × 3–7 mm, blade oblanceolate to lanceolate, proximals sometimes spatulate, base tapered, margins entire, apex rounded to obtuse or acute.

interrupted, cylindric, 2–25(–50) cm, axis glabrous or retrorsely hairy, verticillasters (1 or)2–10, cymes 2–9-flowered, 2 per node;

proximal bracts lanceolate, rarely ovate, 4–50 × 2–12 mm, margins entire;

peduncles and pedicels erect, retrorsely hairy.

interrupted, secund, 1–11 cm, axis glandular-pubescent distally, sometimes also retrorsely hairy proximally, hairs appressed, white, scalelike, verticillasters 2–5(–7), cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts lanceolate, 4–26 × 1–7 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes oblong to lanceolate, 3–4.8 × 0.7–1.8 mm, apex truncate to cuspidate or short- to long-caudate, glabrous;

corolla yellow, rarely white, ochroleucous, pink, or lavender, without nectar guides, tubular to tubular-funnelform, 6–11 mm, glabrous externally, moderately yellowish or white-lanate internally abaxially, tube 3–4 mm, throat slightly inflated, 2–3 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, explanate, 0.4–0.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 4–6 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.5–1 mm pilose, hairs yellowish brown, to 0.5 mm;

style 7–9 mm.

calyx lobes ovate to lanceolate, 3.5–5.5(–6.5) × 1.7–2.1 mm, glandular-pubescent;

corolla violet to reddish purple, without nectar guides, funnelform, 14–18 mm, glandular-pubescent externally, glabrous internally, tube 5–6 mm, throat gradually inflated, 4.5–6 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 0.9–1.2 mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 7–8 mm, exserted, 0.4–0.6 mm diam., glabrous;

style 10–13 mm.

3–5 × 2–3.5 mm, glabrous.

6–9 × 4–5 mm.

= 32.

= 16.