Flora of North America species comparison

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

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

narrowly campanulate, 10–13 × 5–6 mm.

cylindric, 9–14 × 2–3 mm.

7–16;

corollas white to purplish, 9–16 mm.

(4–)5(–6);

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

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

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

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

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

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

in narrow or spreading, paniculiform arrays.

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

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

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

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

= 16.

= 16.