Flora of North America species comparison

floccose-tomentose, unevenly glabrescent (persistently hairy on abaxial leaf faces).

sparsely hairy, unevenly glabrate (usually with persistent tomentum in leaf axils and on abaxial leaf faces).

usually single, sometimes loosely clustered.

usually multiple (arching upwards).

± evenly distributed (basal and proximal sometimes withering before flowering);

petiolate (proximal) or sessile;

blades ovoid or oblong to spatulate (usually pinnatifid to pinnatisect, lobes ± lanceolate to linear), (3–)5–12 × (1.5–)2–4 cm, bases tapered to ± truncate, ultimate margins (often revolute) dentate or entire.

evenly distributed (proximal withering before flowering);

sessile or obscurely petiolate;

blades ± oblong or elliptic, (4–)6–10(–12) × 1.5–3 cm (1–2-pinnatifid, lobes ± linear, 1–2 mm wide), bases ± linear, ultimate margins entire.

± 13;

corolla laminae 12–15 mm.

± 13;

corolla laminae 8–10 mm.

± 13, 5–7 mm, tips green or greenish.

(± 13) ± 21, (5–)6–8 mm, tips minutely black.

of 4–6(–10) bractlets (lengths to 1/2 phyllaries).

0 or of 1–3+ (inconspicuous) bractlets.

20–60 in corymbiform arrays.

4–12 in cymiform arrays (involucres campanulate, 8–15 mm diam.).

hairy.

hairy.

= 40.