Flora of North America species comparison

erect, greenish to purplish, glabrous proximally, often tomentulose distally.

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

proximal present at flowering;

petioles winged;

blades usually ovate or triangular, 4–15 × 2–16 cm, thin, bases truncate to hastate or cordate, margins entire or shallowly dentate, often deeply 3-lobed, faces glabrous or with scattered hairs on veins;

distal reduced in size and lobing.

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.

cylindric, 9–14 × 2–3 mm.

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

(4–)5(–6);

corollas pale yellow to greenish yellow, 7–15 mm.

9–11;

corollas white to creamy, 11.5–13.5 mm.

(4–)5(–6), pale green, often blackish at bases and apices, linear to lanceolate, 10–12 mm, glabrous or sparsely hairy.

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

of 4–6, blackish, triangular bractlets 1–4 mm, glabrous.

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

in narrow or spreading, paniculiform arrays.

in paniculiform arrays.

brown to tan, subcylindric, subterete, 4–5 mm, indistinctly 5–10-ribbed;

pappi usually whitish or pale yellow, sometimes reddish brown, 5–6 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.