Flora of North America species comparison

basal and cauline on proximal 1/4–1/3(–1/2) of plant heights;

petioles 1–5(–8+) cm;

blades simple or with 1–2+ lateral lobes, simple blades or terminal lobes lance-ovate or lanceolate to oblanceolate or lance-linear, 5–12 cm × 8–15(–18+) mm.

basal and cauline or mostly cauline, opposite;

blades simple or ± pinnately or pedately lobed (with 3–9+ lobes).

(8–)12–20(–35+) cm.

8 (more in “double” cultivars), neuter;

laminae yellow, sometimes each with red-brown or purple near base, ± cuneate, broadest distal to middles, apices usually ± 3-lobed (middle lobes entire or toothed).

yellow, 15–30+ mm.

6–7.5 mm, apices yellow.

(30–)60–150+;

corollas yellow, apices yellow or red-brown to purple, lobes 5;

style-branch apices ± penicillate to short-conic or truncate-mucronate.

deltate to lance-deltate, 8–12+ mm.

8.

of lance-ovate to lance-linear or linear bractlets 4–8(–12) mm.

of (6–)8(–9) bractlets.

(2.6–)3–4 mm, wings ± spreading, ± chartaceous, entire.

obovate to oblong (often cupped), margins ± winged (or wingless and margins adaxially ± corky), wings ± chartaceous, usually entire, rarely irregularly toothed to pectinate, ± spreading, not ciliolate, faces glabrous, smooth or ± papillate;

pappi 0, or usually falling, of (1–)2 cusps or subulate to lanceolate scales (0.1–0.5+ mm).

nodes proximal to first peduncle usually 1–3(–5+), distalmost 1–3 internodes 1–2(–8+) cm.

basally ± lanceolate to linear, distally attenuate (± filiform).

= 13.

= 26 (+ 0–4B).