Flora of North America species comparison

crowded, green;

blades 1–3-nerved, oblanceolate, 45–70 × 5–14 mm, faces glabrous or puberulent, gland-dotted;

distalmost shorter than arrays.

usually crowded, green;

blades 3-nerved (only midnerves prominent), linear, 30–80 × 2–3 mm, faces glabrous or puberulent, often minutely stipitate-glandular, ± resinous;

distalmost overtopping arrays.

12–14 mm.

9–12 mm.

5–7;

corollas ca. 10 mm, tubes mostly glabrous, throats ± abruptly dilated, lobes about 2.5 mm.

8–20;

corollas yellow, 7.9–10 mm, tubes sparsely hairy, throats gradually dilated, lobes 1.4–2.1 mm.

11–15, chartaceous, apices erect or ± recurved, attenuate (mostly glabrous).

10–15, mostly chartaceous, outermost sometimes herbaceous-tipped, apices erect, attenuate.

10+ in cymiform arrays.

usually 5–12+ in racemiform arrays.

= 18.