Flora of North America species comparison

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

erect to ascending, 15–50(–80) cm, sparsely, loosely strigose.

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 lanceolate-auriculate or triangular, decurrent on mid and distal stems, with 2 distinct lobes, (3–)5–13 mm;

blade linear, linear-lanceolate or -oblanceolate, oblong, or elliptic, narrower distally, 45–100 mm, length (2.5–)4–10 times width, surfaces strigose abaxially, glabrous adaxially.

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

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

(1 or)2–5(–12)-flowered, terminal, subterminal, or lateral, 6–25 cm;

bracts persistent, subulate-triangular.

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

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

calyx broadly cylindrical, 6–9 mm, lobes triangular-lanceolate, glabrous or slightly puberulous;

corolla bright yellow, 8–12 mm.

30–45 × 10–20 mm, glabrous.

15–25(–30) × 7–10 mm, glabrous.

= 16.

= 32.