Flora of North America species comparison

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

several from base, usually somewhat decumbent, (unbranched), (0.4–)0.5–2 dm.

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

(petiole slender, often narrowly winged);

blade obovate to orbicular or rhombic-orbicular, 2–9 cm, (base abruptly narrowed to petiole), margins usually entire, rarely with few scattered teeth, (apex rounded or obtuse, sometimes with apical mucro).

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

blade spatulate to oblanceolate, 1–3 cm, margins entire, (apex usually obtuse).

loose (lax).

loose, (elongated in fruit).

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

petals 6–11 mm.

sepals linear-oblong, 4–7.5 mm;

petals spatulate, 6–11 mm.

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

(divaricate, slightly sigmoid or nearly straight), 6–12 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.

(erect), didymous, suborbicular, inflated, (4–)6–15 × (4–)8–20 mm, (papery, basal and apical sinuses similar, basal rarely shallower, apical deep, narrow and closed or nearly so);

valves retaining seeds after dehiscence, pubescent, trichomes appressed;

replum oblong, constricted, 2–3.5 mm, narrower than fruit, apex obtuse;

ovules (2 or) 4 per ovary;

style 4–6(–9) mm.

flattened.

(dark brown), flattened, (2–3 mm).

= 10, 30.

= 10, 16, 24.