Flora of North America species comparison

petioles winged, wings merging with blades;

blades rhombic or widely elliptic, 4–10 × 2–8 cm.

petioles not or barely winged;

blades suborbiculate to ovate, 2–6 × 2–6 cm.

30–100 cm.

15–45 cm.

18–30 mm.

10–20 mm.

20–35;

corollas light yellow, laminae 30–50 mm (1.5–2 times disc diams.).

± 21;

corollas yellow, laminae 20–40 mm.

in 4–6 series, lanceolate to ovate, apices acuminate.

in 3–5 series, narrowly lanceolate (bases ovate), apices acute.

± 10 × 6.5 mm, glabrous or puberulent;

pappi of 2 awns ± 1 mm (plus minute scales).

± 9 × 3.5 mm, silky-hairy;

pappi of 2 awns 1–1.5 mm (plus minute scales or teeth).

= 36.

= 32.