Flora of North America species comparison

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

erect, 100–200(–400) cm, densely, loosely strigose, hairs appressed-ascending, yellowish to golden brown.

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 filiform, not decurrent on stem, 1–2 mm;

blade linear-elliptic to oblong, 50–150 mm, length 2.5–4 times width, surfaces strigose, more densely so abaxially.

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

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

6–20-flowered, terminal, subterminal, or axillary, open, 10–50 cm;

bracts persistent, narrowly ovate-lanceolate, 3–5 mm.

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

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

calyx broadly cylindrical, 1.5–2 mm, lobes triangular-lanceolate, glabrous or slightly puberulous;

corolla deep, bright yellow, sometimes with faint reddish lines, 15–22 mm.

30–45 × 10–20 mm, glabrous.

25–45 × 12–17 mm, densely hirsute-pilose, hairs yellow-brown.

= 16.