Flora of North America species comparison

(several-branched from base), prostrate to decumbent, branched distally, 0.7–3.5(–4) dm.

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

not rosulate;

blade margins pinnatifid.

not rosulate;

blade margins pinnatifid.

shortly petiolate, or (distal) sessile;

blade oblong to oblanceolate or lanceolate, (lateral lobes linear, oblong to ovate, or obovate), 2–9(–11) cm × 7–20(–30) mm, (lateral lobes smaller than terminal), base not auriculate, margins pinnatifid, or (lateral lobes) entire, dentate, or sinuate.

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.

elongated.

considerably elongated.

sepals ascending, oblong, 0.7–1.3 × 0.4–0.7 mm;

petals yellow, oblong to oblanceolate or spatulate, 0.5–0.8 × 0.1–0.3 mm;

median filaments 0.8–1.2 mm;

anthers ovate, 0.1–0.2 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.

ascending to divaricate, (1–)1.5–3.2(–4.2) mm, straight.

divaricate-ascending to horizontal, straight, 1–4.5(–9) mm, (glabrous or sparsely pubescent).

siliques or silicles, curved-ascending, lanceolate to narrowly ovoid or oblong-lanceolate, 3–7(–9) × (0.8–)1–1.7(–2) mm (often slightly constricted at middle);

valves papillate;

ovules 20–80 per ovary;

style (0.2–)0.5–1 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, reddish brown, cordiform, 0.5–0.7 mm, colliculate.

biseriate, brown, cordiform, 0.5–0.7 mm, colliculate.

= 16.