Flora of North America species comparison

1(–10), erect or ascending, green to purple, usually simple, glabrous or glabrate proximally, tomentulose distally.

erect, simple, glabrous or strigose proximally, tomentose distally.

proximal present at flowering;

petioles winged (2–6 cm);

blades triangular to irregularly elliptic, 3–25 × 1–7 cm, thin or slightly coriaceous, bases abruptly constricted, truncate to slightly hastate, margins irregularly dentate or coarsely serrate, apices acute to acuminate, faces glabrate;

distal sessile, ovate to lanceolate, reduced.

proximal usually present at flowering; petiolate (petioles 2.2–3 cm);

blades (light green) sagittate to ovate, 13–25 × 7–12 cm, thin, bases attenuate, margins coarsely and irregularly dentate, apices acute to rounded, faces glabrous or lightly setose along veins;

distal reduced to bracts.

narrowly campanulate, 10–13 × 5–6 mm.

cylindric to campanulate, 4–9 × 2–3 mm.

7–16;

corollas white to purplish, 9–16 mm.

9–11;

corollas white to creamy, 11.5–13.5 mm.

8, green to dark green, lanceolate, 8–11 mm, margins scarious, apices acute, finely tomentulose.

8, green to rose, linear-subulate to lanceolate, 9–11 mm, (apices minutely ciliate) faces glabrate (midribs sparingly hispid).

of 2–3, dark green, lanceolate or subulate bractlets 1–3 mm, glabrous or finely tomentulose.

of 5–12, linear-subulate to narrowly lanceolate bractlets 2–4 mm, hispid.

(10–17) in broad, corymbiform arrays, lateral branches often elongate and overtopping main stems.

in paniculiform arrays.

brown to light tan, subcylindric, 4–7 mm, weakly 7–10-ribbed;

pappi pale yellow to dull white, 8–10 mm.

golden yellow to tan, subcylindric, angled to terete, 6–7 mm, prominently 12–15-ribbed;

pappi white to tan or yellow, 7–8 mm.

= 16.