Flora of North America species comparison

(sometimes purple-tinged) 1–2+, ± decumbent to ascending or erect, branched.

1, erect, simple or branched (strigose, glabrate).

basal (soon withering) and cauline; petiolate (bases often clasping) or sessile;

blades ± ovate or elliptic to obovate or spatulate, mostly 7–25+ × 3–5(–10+) cm, 2–3-pinnately lobed (primary lobes mostly 6–24+ pairs, narrowly oblong to linear-elliptic or linear, lobules oblong or ovate to ± lanceolate, sometimes curled), ultimate margins entire or ± dentate, faces usually ± villous or arachno-villous to lanate, sometimes glabrescent or glabrate, usually gland-dotted (in pits).

basal and cauline; petiolate (proximal) or sessile (distal);

blades (basal and proximal cauline) mostly elliptic to oblong, 10–20 × 2–8 cm, usually not pinnately lobed (sometimes with 1–4+ lateral lobes near bases), margins ± crenate, faces usually silvery strigose or sericeous (at least when young), glabrescent, ± gland-dotted.

8–22+ mm diam.

(3–)5–8(–10) mm diam. (phyllaries 40–60+ in 3–4+ series, tips usually ± dilated).

flat to hemispheric.

flat to convex.

8–21+ (pistillate, fertile; corollas pale yellow to yellow, laminae mostly 1–7+ mm, usually 3-lobed) or 0 (heads quasi-radiant or -radiate or ± disciform, peripheral pistillate florets 15–30+; corollas pale yellow, ± zygomorphic, lobes 3–5, abaxial more pronounced).

usually 0 [sometimes 12–15, pistillate, fertile;

corollas white, laminae 4–6+ mm].

(2–)3(–4) mm.

ca. 2 mm.

(2–)5–12(–20+) in corymbiform arrays or borne singly.

(3–)10–60+ in corymbiform arrays.

2–3(–4) mm, weakly 5-ribbed or -angled, gland-dotted;

pappi coroniform, 0.1–0.5+ mm (entire or erose to lacerate).

± columnar, 1.5–2 mm, 5–8-ribbed (with non-mucilaginous glands);

pappi coroniform, 0.1–0.4 mm (entire or ± toothed).

= 54.

= 18, 54.