Flora of North America species comparison

(simple or branched) glabrous or with scabrous lines, not glaucous.

(erect, stout) glabrous, glaucous.

usually ascending;

blades (1–)3- or -5-nerved, linear to lanceolate, 40–100(–120) × 1.4–4(–8) mm, lengths 12–49 time widths, gradually reduced distally, firm-herbaceous, margins scabrous, apices acuminate, faces abundantly and prominently gland-dotted (29–49 dots per mm²), glabrous or midveins with hairs.

spreading-ascending to erect;

blades 3- or -5-nerved, linear, 82–100 × 4.3–10 mm, lengths 10–27 times widths, gradually to abruptly reduced distally, herbaceous to firm-herbaceous, margins scabrous, apices abruptly acute to acuminate, faces ± gland-dotted (18–56 dots per mm²), adaxial and vein axils often sparsely hairy.

obconic, (4–)4.5–6.2 mm.

campanulate, 3.7–4.9 mm.

9–13(–16).

(15–)17–22(–28).

3–9;

corollas (3–)3.3–4.8 mm.

(7–)9–11(–18);

corollas 3.1–4.2 mm.

usually green-tipped, outer ovate, inner linear-oblong, apices obtuse to acute (± strongly resinous).

stramineous, sometimes green-tipped, outer narrowly lanceolate, inner linear (firm), apices acute to acuminate.

(some or all) pedunculate (rarely all glomerate), usually in flat-topped to slightly rounded, arrays (25–)35–60% of plant heights.

mostly pedunculate, in relatively narrow, elongate arrays 33–60% of plant heights (often interrupted and with multiple levels).

= 36, 54.

= 18.