Flora of North America species comparison

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

(simple or several from base), prostrate, branched distally, (1–)2–5(–6) dm, (pubescent).

rosulate;

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

not rosulate;

blade margins pinnatifid.

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).

sessile;

blade oblong to oblanceolate or broadly lanceolate (lateral lobes oblong to ovate), (2–)3–5 cm × 5–15 mm, base auriculate, margins pinnatifid to deeply sinuate or entire, (surfaces sparsely pubescent abaxially with vesicular trichomes along veins, glabrous adaxially).

often considerably elongated.

slightly 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 erect, oblong, 2–2.5 × 0.8–1.3 mm;

petals pale yellow, spatulate, 2.5–3.5 × 0.8–1.3 mm;

median filaments 2.7–3 mm;

anthers narrowly oblong, 0.7–0.9 mm.

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

ascending to horizontal, usually straight, rarely curved-ascending, 3–5(–6.5) mm, (sparsely pubescent).

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, curved, oblong to lanceolate, 6–10 × 2–3 mm;

valves glabrous or puberulent;

ovules 60–80 per ovary;

style 1–2(–2.5) 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.

biseriate, light brown, cordiform, 0.7–1.5 mm, colliculate.