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 few from base), erect, branched distally, 1.5–6 dm.

not rosulate;

blade margins pinnatifid.

often not 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).

petiolate;

blade pinnatifid to pinnatisect or pectinate, (lobes 4–10 on each side, linear or oblong to ovate), 4–13 cm × 9–35 mm;

base auriculate, margins entire or dentate, or (distally) pinnately lobed.

elongated.

(subumbellate), considerably 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 ascending to spreading, oblong, 2–3 × 0.7–1 mm;

petals (spreading), yellow, spatulate, 2.5–4 × 0.7–1.2mm;

median filaments 1.8–3 mm;

anthers oblong, 0.5–0.8 mm.

divaricate-ascending to horizontal, straight or recurved, (1.2–)1.7–5(–8) mm.

divaricate-ascending to horizontal, straight, 3–11 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, usually curved inward, rarely straight, linear, (8–)10–17(–20) × 1–2 mm;

ovules 42–68 per ovary;

style 0.5–1(–1.2) mm.

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

biseriate, reddish brown, cordiform, 0.6–0.9 mm (0.5–0.6 mm diam.), reticulate-foveolate.

= 16.