Flora of North America species comparison

suffrutescent basally, erect, 50–150 cm, glabrous.

erect to decumbent, 4–40 cm, hirsute-pilose.

unifoliolate;

stipules ovate to ovate-lanceolate, not decurrent on stem, 4–7 mm;

blade obovate to elliptic, 50–150 mm, length 1.5–2.5 times width, surfaces glaucous, strigose abaxially, glabrous-punctate adaxially.

unifoliolate;

stipules sometimes absent, decurrent on mid and distal stems, lanceolate-auriculate or triangular, with 2 distinct, persistent, triangular distal lobes, (3–)5–10 mm or absent (in var. blumeriana);

subsessile;

blade elliptic to oblong or linear-lanceolate, 10–80 mm, length 4–8 times width, surfaces strigose to sparsely rusty-pilose.

12–22-flowered, terminal, subterminal, or lateral, 10–50 cm;

bracts persistent, cordate-auriculate, 5–8 mm.

(1 or)2–5-flowered, terminal, subterminal, or lateral, 2–6 cm;

bracts persistent, linear-triangular.

calyx broadly cylindrical, 10–15 mm, lobes triangular-lanceolate, glabrous;

corolla bright yellow, faintly red-lined, 17–25 mm.

calyx broadly cylindrical, 5–8 mm, lobes triangular-lanceolate, glabrous or slightly puberulous to rusty-pilose;

corolla bright yellow, 9–11 mm.

30–45 × 10–20 mm, glabrous.

7–27(–36) × 5–11 mm, glabrous.

= 16.