Flora of North America species comparison

(few to several from base), usually ascending, decumbent, or prostrate, rarely erect, branched distally, 1–4.2(–5) dm, (hirsute proximally).

(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 pinnatifid.

rosulate;

blade margins pinnatifid.

shortly petiolate or sessile;

blade oblong or oblanceolate to obovate, (terminal lobe oblong), (2–)3.5–10(–12) cm × (5–)10–30(–37) mm, (lateral lobe smaller than terminal), base usually auriculate, rarely amplexicaul, margins: proximal pinnatifid or sinuate, distal dentate or entire, (surfaces sparsely pubescent).

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).

elongated.

elongated.

sepals erect, oblong, 0.8–1.8 × 0.5–1 mm;

petals (erect), yellow, oblanceolate to spatulate, 0.5–1.8 × 0.2–1 mm;

median filaments 0.9–1.3mm;

anthers ovate, 0.3–0.5 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 or recurved, (1.2–)1.7–5(–8) mm.

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

silicles or siliques, curved, ovoid to pyriform, 2–8(–8.8) × (0.5–)1–2.5 mm;

valves glabrous;

ovules (20–)30–80 per ovary;

style 0.3–1 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, brown, cordiform, 0.5–0.7 mm, colliculate.

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

= 16.