Flora of North America species comparison

erect, 70–250 cm, strigose.

erect, 30–90 cm, strigose to strigose-sericeous.

3-foliolate;

stipules absent;

leaflet blades linear to linear-lanceolate or elliptic-lanceolate, 50–130(–180) mm, length 7–10 times width, surfaces strigose abaxially, glabrous adaxially.

unifoliolate;

stipules sometimes absent, setaceous, not decurrent on stem, 1–2 mm;

blade obovate to spatulate or oblanceolate, 30–80 mm, length 2.2–3(–4) times width, surfaces strigose abaxially, glabrous adaxially.

4–12-flowered, terminal or subterminal, 15–40 cm;

bracts persistent, linear-triangular, minute.

5–24-flowered, terminal, subterminal, or lateral, 10–20(–30) cm;

bracts caducous, linear, 2–3 mm.

calyx broadly cylindrical, truncate basally, 4–6 mm, lobes triangular, shiny-glabrous;

corolla pale yellow with prominent reddish purple lines, 18–20 mm.

calyx broadly cylindrical, 12–15 mm, basally truncate, lobes triangular-lanceolate, glabrous or slightly puberulous;

corolla bright yellow, with prominent reddish lines to strongly red-tinted, 20–25 mm.

straight, (40–)50–70 × (10–)15–20 mm, sparsely strigose or glabrescent.

25–40(–50) × 10–14 mm, glabrous.

= 16.

= 16.