Flora of North America species comparison

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

several (to several hundred) from base, erect, (each terminating in a tufted cluster of leaves), to 7 dm.

(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).

(petiole not differentiated from blade);

blade narrowly elliptic to narrowly linear-oblanceolate, (0.8–)1–1.5 cm, (base cuneate), margins entire.

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

similar to basal, blade sometimes linear, (apex acute).

loose, (elongated in fruit).

dense, (often ± subumbellate, somewhat elongated in fruit).

sepals linear-oblong, 4–7.5 mm;

petals spatulate, 6–11 mm.

sepals narrowly elliptic, 2.5–3.5(–4) mm, (not keeled);

petals narrowly spatulate, 4–7 mm.

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

(strongly sigmoid), 5–10 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.

ellipsoid, compressed, 4–6 mm;

valves densely pubescent, trichomes appressed;

ovules 2 per ovary;

style 2–3.5 mm.

(dark brown), flattened, (2–3 mm).

flattened, (oval).

= 10, 16, 24.