Flora of North America species comparison

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

usually 1, sometimes 2–4, clustered, glabrous or sparsely tomentose proximally.

(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.

petiolate;

blades usually broadly lanceolate to ovate, sometimes subhastate, 20–50+ × 20–40+ mm, bases truncate to subcordate or obtuse, margins crenate, denticulate, bluntly dentate, or sharply dentate (proximal cauline leaves petiolate; margins usually pinnately lobed to laciniate, sometimes subentire).

abruptly reduced (bractlike).

gradually reduced (becoming sessile, sometimes clasping).

inconspicuously bracteate, glabrous or densely hairy.

bracteate, glabrous.

0, 8, or 13;

corolla laminae 5–10 mm.

0, 8, or 13;

corolla laminae 6–10+ mm.

30–50+;

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

70–80+;

corolla tubes 2.5–3.5 mm, limbs 2–3 mm.

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

(13–)21(–30+), light green, 3–8 mm, glabrous.

conspicuous (bractlets often cyanic).

inconspicuous.

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

5–20+ in open or congested, subumbelliform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 44, 46.

= 40, 44, 46, 80.