Flora of North America species comparison

simple from base, erect to decumbent, (slender), 0.6–1.5 dm.

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

blades obovate to deltate, 1.5–3(–4) cm, margins entire or outer one with 1 or 2 broad teeth.

(petiole slender);

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

blade oblanceolate to spatulate, 0.6–1.5 cm, margins entire.

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

loose.

congested.

sepals (green-yellow, often tinged with purple), elliptic, 3–4.6 mm;

petals oblanceolate, 6–8 mm (claw expanded).

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

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

(sigmoid), 5–9 mm.

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

(depressed), broadly obovate, compressed (angustiseptate), 2–4 mm, (apex slightly bilobed to nearly truncate);

valves densely pubescent, trichomes strongly ascending, spreading, long, (appearing fuzzy), pubescent inside;

ovules 4 per ovary;

style 3–4 mm, (pubescent or glabrous).

(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).

flattened.

flattened.

= 8, 10, 16, 24.