Flora of North America species comparison

(simple or several-branched from base) erect, branched distally, (0.9–)2–4.5(–6.3) dm.

(simple or several from base), usually prostrate or decumbent, rarely erect, branched distally, 1–4 dm, (glabrous or pubescent, trichomes vesicular).

not rosulate;

blade margins dentate.

rosulate;

blade margins pinnatifid.

shortly petiolate or sessile;

blade oblong or oblanceolate to obovate, 1.5–7(–13.3) cm × (5–)10–28(–50) mm, (lateral lobes much smaller than terminal), base auriculate or not, margins dentate or less frequently sinuate, or (lateral lobes) denticulate or entire.

shortly petiolate;

blade oblong, oblanceolate to obovate, or lyrate-pinnatisect, (lateral lobes oblong to ovate), (2–)3.5–10(–13.5) cm × 10–40(–53) mm, base auriculate or not, margins usually pinnatifid to pinnatisect, rarely 2-pinnatifid, (lateral lobes) dentate to crenate or sinuate, (surfaces glabrous or adaxially pubescent, trichomes vesicular).

considerably elongated.

elongated.

sepals ascending to spreading, ovate, 1.2–2 × 0.5–0.8 mm;

petals absent;

median filaments 1–1.6 mm;

anthers ovate, 0.2–0.3 mm.

sepals erect, oblong, 1.5–2.5 × 0.5–1 mm;

petals yellow, spatulate, 1–2 × 0.4–0.7 mm;

median filaments 1.2–1.7 mm;

anthers ovate, 0.2–0.3 mm.

divaricate-ascending to horizontal, straight, 0.5–2(–4) mm, (slender or stout).

ascending to horizontal, straight or curved-ascending, (1.5–)2.3–4.7(–5.3) mm.

siliques, straight or curved, oblong to oblong-linear, (4–)6–9(–12) × (1.4–)1.8–2.8(–3.5) mm;

ovules 158–242 per ovary;

style 0.1–0.5 mm.

siliques, straight or curved, linear to oblong-linear, 8–14(–21) × 1–2.5 mm;

valves glabrous or pubescent;

ovules (100–)150–210 per ovary;

style (0.2–)0.5–1.1 mm.

biseriate, yellow-brown, cordiform, 0.4–0.5 mm, foveolate.

biseriate, reddish brown, cordiform, 0.4–0.5 mm, foveolate.

= 16.