Flora of North America species comparison

simple from base, erect, (usually unbranched), to 4.5 dm.

simple from base, erect, (unbranched, sparsely leaved), to 7 dm.

blade suborbicular to elliptic, 2–9.5(–11.5) cm, margins entire, sinuate, coarsely dentate, or almost lyrate-pinnatifid.

blade elliptic or obovate to oblong, 4–15 cm, margins entire, dentate, or lyrate-pinnatifid.

similar to basal, blade narrowly linear or, sometimes, orbicular.

(proximal often narrowed to short petiole, distal sessile);

blade broadly elliptic to obovate or rhombic, 0.5–3(–5) cm, margins entire.

loose (lax).

dense or slightly elongated.

sepals elliptic or ovate, (2–)3.5–7.5 mm, (cucullate);

petals 6–11 mm.

sepals elliptic to ovate, 3.5–6(–7) mm, (median pair usually thickened apically, cucullate);

petals (white, often purple-veined, fading purplish), suborbicular to obovate, obdeltate, or cuneate, 4.5–10(–12) mm, (often narrowed to broad claw, apex emarginate, less frequently claw undifferentiated from blade).

(recurved, straight, curved, or sigmoid), 6–20 mm.

(spreading or recurved, loosely sigmoid), 5–25 mm.

obovoid to subglobose, not inflated (not angustiseptate), 3–6 mm;

valves sparsely pubescent, sometimes glabrous inside, trichomes sessile or stalked;

ovules 4(–8) per ovary;

style (1.6–)3–6 mm.

(pendent or horizontal, sessile or substipitate), subglobose to broadly ellipsoid, not or slightly inflated, (4–)5–8 mm;

valves (not retaining seeds after dehiscence), glabrous throughout;

replum as wide as or wider than fruit;

ovules 4–8(–12) per ovary;

style 1–3(–4) mm.

flattened.

flattened.

= 10, 30.

= 18, 36.