Flora of North America species comparison

simple or several from base, prostrate to erect, 0.5–2(–3.5) dm.

several from base, erect or outer decumbent, (often several-branched, branches slender and flexuous), to 8 dm.

blade suborbicular or obovate to elliptic, (1–)2–5(–7) cm, margins entire, sinuate, or shallowly dentate.

blade pinnatisect to repand, 3–9(–14) cm, margins entire.

(often secund, proximal shortly petiolate, distal sessile);

blade linear to obovate or rhombic, 1–2.5(–4) cm, margins entire or shallowly dentate.

(sometimes secund, proximal usually petiolate, distal sessile);

blade elliptic, 1–6 cm, (distal with cuneate base), margins entire or deeply dentate.

dense, compact, (usually elongated in fruit).

dense.

sepals elliptic, 5–8.5 mm, (lateral pair boat-shaped, saccate, median pair thickened apically, cucullate);

petals (yellow to orange, sometimes fading purplish), narrowly spatulate or obovate, (6–)7.5–12 mm, (claw undifferentiated from blade, or gradually narrowed to claw, slightly expanded basally).

sepals elliptic to oblong, 3–5.5 mm, (median pair slightly thickened apically, cucullate);

petals (sometimes drying slightly purplish), suborbicular or broadly ovate, 4.5–7(–9) mm, (narrowing gradually to short claw).

(usually sharply sigmoid, rarely nearly divaricate-spreading and straight), 5–15(–20) mm, (stout).

(horizontal or recurved and ascending at tip, sometimes loosely sigmoid), (5–)10–20 mm.

(erect), ellipsoid or ovoid, not or slightly obcompressed, (apex not compressed), (6–)7–12 mm;

valves densely pubescent, sometimes sparsely pubescent inside;

ovules (8–)12–20(–24) per ovary;

style 3–7 mm, (sometimes pubescent).

globose or broadly ellipsoid, not or slightly inflated, (4–)5–8 mm, (smooth);

valves (not retaining seeds after dehiscence), glabrous;

replum as wide as or wider than fruit;

ovules (8–)12–16(–20) per ovary;

style (1.5–)2–3(–4) mm.

flattened.

flattened.

= 10.

= 12.