Flora of North America species comparison

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

erect, 30–80 cm, puberulent, hairs sharply upcurved, branches angled, slightly zigzag.

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 ovate, orbiculate, or sickle-shaped, often encircling node, 7–20 mm;

blade broadly obovate, elliptic, or broadly elliptic-lanceolate, 30–70(–120) mm, length 1–1.5(–2) times width, surfaces glabrous.

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

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

3–9(–15)-flowered, terminal, subterminal, or lateral, 3–6(–20) cm;

bracts persistent or caducous, linear-triangular.

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

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

calyx broadly cylindrical, 2–3 mm, lobes ovate to lanceolate, glabrous or slightly puberulous;

corolla blue to lavender, often variegated with white or blue- to purple-lined, or, sometimes, white or pale yellow tinged blue (drying yellowish), 12–15 mm.

30–45 × 10–20 mm, glabrous.

30–40 × 9–12 mm, moderately hirsute-pilose, hairs spreading to ascending.

= 16.