Flora of North America species comparison

ascending to erect, usually much-branched from base, 5–10 cm, glabrous.

decumbent to ascending or erect, simple or few-branched, (5–)15–22 cm, glabrous or glandular-puberulent distally.

blade linear-lanceolate, 5–15 × 1–5 mm, margins entire or with 1 or 2 pairs of teeth distally, apex obtuse, surfaces glabrous.

blade linear-lanceolate to lanceolate-ovate, 7–20(–32) × 1.5–5(–7) mm, margins entire, rarely with 1 or 2 pairs of teeth distally, apex acuminate to attenuate, surfaces glabrate or glandular-pubescent.

slender, 4–10 mm, length 1–2.3 times bract, glabrous;

bracteoles 1, 1.5–4 mm.

stout, (3–)7–25 mm, length 0.5–2.5 times bract, glabrous or obscurely glandular-pubescent distally;

bracteoles 0.

sepals distinct, linear to linear-lanceolate, 3–6 mm;

corolla 9–12 mm, tube yellow to orangish yellow, veins yellow to greenish yellow or brownish yellow, limb yellow;

style 3–5 mm.

sepals distinct, lanceolate, (4–)7–11 mm;

calyx slightly bilaterally symmetric;

corolla 5–8(–10) mm, tube yellowish green or yellow, veins purple, limb white to pinkish white;

style 2–3 mm.

ovoid, 2–2.5 × 1.5–2 mm.

subglobular, 3–6 × 3.5–5 mm.

0.3–0.4 mm.

0.4–0.9 mm.