Flora of North America species comparison

several from base, erect or decumbent (arising laterally, unbranched), 0.5–1.5 mm.

several from base, erect (and stout) or outer ones decumbent, (unbranched or branched, stiff and densely foliate, sterile leaf-bearing branches sometimes present), to 4 dm.

(petiole slender);

blade obovate to orbicular, 3–6 cm (width 10–20 mm), margins entire or dentate.

blade obovate or elliptic, to ca. 3 cm, margins sinuate or shallowly dentate.

blade spatulate, 1–2 cm (width 3–6 mm), margins entire, (apex often acute).

(proximal usually shortly petiolate, distal sessile);

blade obovate to broadly elliptic, 1–3 cm, margins sinuate or shallowly toothed.

congested.

dense, compact, (elongated in fruit).

sepals narrowly lanceolate, 5–8(–9) mm;

petals narrowly oblanceolate, 9–12 mm, (claw undifferentiated from blade).

sepals elliptic or narrowly elliptic or oblong, (3.8–)4.5–5.5 mm, (lateral pair cucullate, very convex, median pair tapering to base, thickened apically, cucullate, often slightly keeled);

petals cuneate, 6.5–8 mm, (slightly expanded at base, margins sinuate, apex retuse or entire).

(divaricate, slightly sigmoid), 8–15 mm.

(recurved, curved or sigmoid), somewhat expanded apically.

(often purplish in age), didymous, subreniform, strongly inflated, 9–18 × 11–21(–30) mm, (papery, base obtuse to slightly cordate, apical sinus V-shaped or convex, open crests rounded);

valves (2-keeled on side away from replum, each 3-sided, keels rounded, sides flat or slightly convex, retaining seeds after dehiscence), evenly and densely pubescent;

replum oblong, as wide as or wider than fruits, apex obtuse;

ovules 4–12 per ovary;

style (4–)6–8 mm (exceeding sinus).

(sessile or substipitate), oblong or broadly elliptic, compressed (latiseptate), 5–8 mm;

valves pubescent, trichomes spreading, sparsely pubescent inside;

ovules 4–6 per ovary;

style 3–5 mm.

flattened.

flattened.

= 8, 10, 16, 24.