Flora of North America species comparison

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

(usually few-branched from base, rarely simple), ascending or decumbent to prostrate, (0.5–)1–4(–6) dm, branched distally, (glabrous or hirsute proximally).

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).

petiolate or sessile;

blade oblong, oblanceolate to spatulate, or obovate, (lateral lobes linear to oblong or ovate), (2–)3–9(–13) cm × 8–20(–35) mm, (lateral lobe smaller than terminal), base auriculate, margins usually pinnatifid to pinnatisect, rarely pectinate, or (terminal lobe) entire or dentate.

often considerably elongated.

considerably 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 (rarely persistent), ascending, oblong, 0.8–2(–2.5) × 0.6–1.4 mm;

petals (spreading), yellow, oblong to oblanceolate, 0.6–1.8(–2) × 0.3–1.3 mm;

median filaments 1–1.7 mm;

anthers ovate, 0.4–0.5 mm.

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

divaricate-ascending to horizontal, straight, 1–4.5(–9) mm, (glabrous or 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-ascending, oblong to linear, 4–13(–18) × 1–2 mm;

valves glabrous;

ovules (30–)42–106 per ovary;

style 0.1–0.8 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, brown, cordiform, 0.5–0.7 mm, colliculate.

= 16.