Flora of North America species comparison

1 or multiple, clustered, usually glabrous, rarely sparsely floccose-tomentose, leaf axils sometimes tomentose.

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

(and proximal cauline, relatively thick and turgid) petiolate;

blades lanceolate or narrowly oblanceolate, 20–40+ × 5–15 mm, bases tapering, margins usually entire, sometimes sub-pinnatisect (apices subentire or dentate).

(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.

gradually reduced (± petiolate or sessile).

abruptly reduced (bractlike).

bracteate, glabrous or sparsely tomentose.

inconspicuously bracteate, glabrous or densely hairy.

8–10(–13);

corolla laminae 5–8+ mm.

0, 8, or 13;

corolla laminae 5–10 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

30–50+;

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

13 or 21, green, 6–10 mm, sparsely tomentose proximally, glabrous distally.

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

inconspicuous.

conspicuous (bractlets often cyanic).

4–15+ in corymbiform arrays.

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

1.5–2.5 mm, glabrous or sparsely hirtellous on ribs;

pappi 5–6 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 44, 46.