Flora of North America species comparison

several from base, erect or outer ones decumbent, (unbranched, stout, usually sparsely leaved), 1–3 dm.

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

blade linear, 2–7(–10) cm, margins entire, repand, or shallowly dentate.

(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).

(sessile);

blade (erect), spatulate to linear, (1–)2–3(–4.5) cm, margins entire, sometimes involute, (apex acute or subacute).

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

dense, (exceeding basal leaves).

loose, (elongated in fruit).

sepals ovate or oblong, (4.5–)5–6(–7) mm, (lateral pair subsaccate, cucullate, median pair thickened, cucullate apically);

petals spatulate, 7–9(–11) mm (widened at base, slightly retuse).

sepals linear-oblong, 4–7.5 mm;

petals spatulate, 6–11 mm.

(spreading, sharply sigmoid), 8–15 mm.

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

(sessile or substipitate), ovate to oblong, not compressed at distal margins or apex, 5–9 mm;

valves sparsely pubescent, trichomes appressed;

ovules 4–8 per ovary;

style 3–5 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).

= 16, ca. 20.

= 10, 16, 24.