Flora of North America species comparison

(often simple from base), erect, branched distally, (0.5–)1–10(–14) dm, (sometimes hirsute proximally).

prostrate, decumbent, ascending, or suberect, branched mainly basally, (0.5–)1.5–8(–10) dm.

rosulate;

blade [(4–)6–20(–30) cm × 10–50(–80) mm] margins lyrate-pinnatisect, (abaxial surface sometimes hirsute).

not rosulate;

similar to cauline.

petiolate or subsessile;

blade lyrate-pinnatisect, (lateral lobes oblong or ovate when present), (1.5–)2.5–10(–18) cm × (5–)8–25(–30) mm, (lateral lobes smaller than terminal), base auriculate or amplexicaul, margins subentire or irregularly dentate, sinuate, serrate, or crenate, (abaxial surface sometimes hirsute).

petiolate, or (distal) often subsessile;

blade deeply pinnatisect, (lobes 3–6 on each side, sublinear, lanceolate, oblong, elliptic, or ovate), (2–)3.5–15(–20) cm × (7–)10–45(–60) mm, base usually not auriculate, rarely minutely auriculate, margins dentate, serrate, subentire, or (distally) pinnatisect, (lobes 1–3 on each side).

often considerably elongated.

elongated.

sepals erect, oblong, 1.5–2.4(–2.6) × 0.5–1 mm;

petals yellow or pale yellow, spatulate, (1.5–)1.8–2.5(–3) × 0.5–1.5(–2) mm;

median filaments 1–2.5 mm;

anthers ovate, 0.3–0.5 mm.

sepals ascending or spreading, oblong, 1.8–3(–3.5) × 0.7–1.5 mm;

petals yellow, spatulate or obovate, (2.2–)2.8–5.5(–6) × 1.5–2.5 mm;

median filaments (1.5–)1.8–3.5(–4) mm;

anthers oblong, 0.7–1 mm.

divaricate or slightly to strongly reflexed, straight or curved, (2.5–)3–10(–14) mm.

divaricate, straight, (3–)4–10(–12) mm.

usually silicles, rarely siliques, often slightly curved, oblong, ellipsoid, or oblong-ovoid, (2.5–)4–10 × (1.5–)1.7–3(–3.5) mm;

ovules 20–90 per ovary;

style 0.2–1(–1.2) mm.

siliques, straight, usually linear, rarely oblong-linear, 10–20(–25) × (0.7–)1–1.3(–1.6) mm;

valves glabrous;

ovules 24–80 per ovary;

style 0.5–1(–1.5) mm.

biseriate, brown to yellowish brown, ovoid or subglobose, 0.5–0.7(–0.9) mm (0.4–0.6(–0.7) mm diam.), colliculate.

(rarely produced), usually uniseriate, rarely sub-biseriate, reddish brown, ovoid, 0.5–0.9 mm (0.4–0.5 mm diam.), colliculate.

= 32, 40, 48.