Flora of North America species comparison

1 or 3–5, clustered (often scapiform), usually floccose, lanate-tomentose, or canescent, sometimes glabrate.

1 or 2–5+, loosely clustered, glabrous or leaf axils sparsely tomentose.

(either of two forms): usually (1) sessile, sometimes petiolate;

blades narrowly lanceolate to elliptic, 15–40+ × 5–25 mm, bases tapering, margins entire or dentate toward apices (often revolute), sometimes (2) petiolate;

blades ovate to orbiculate, 10–20 × 5–15 mm, bases tapering to abruptly contracted, margins entire or wavy, sometimes dentate toward apices.

(and proximal cauline) petiolate;

blades narrowly lanceolate (pinnatifid, lateral lobes 6+ pairs, their bases petioluliform, terminal lobes smaller than laterals), 60–100 × 10–20 mm, bases tapering, ultimate margins dentate.

abruptly reduced (bractlike).

gradually reduced (sessile).

inconspicuously bracteate, glabrous or densely hairy.

bracteate or ebracteate, glabrous.

0, 8, or 13;

corolla laminae 5–10 mm.

(8–)13;

corolla laminae 8–10+ mm.

30–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

40–55+;

corolla tubes 2–3 mm, limbs 2–3 mm.

13 or 21, green (tips sometimes cyanic), 4–10 mm, glabrous or hairy.

(13–)21, green (tips yellow), 4–6+ mm, glabrous.

conspicuous (bractlets often cyanic).

inconspicuous.

1–5(–8) in cymiform to subumbelliform arrays.

6–20+ in corymbiform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, hirtellous on ribs;

pappi 3.5–4.5 mm.

= 44, 46.