Flora of North America species comparison

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

several from base, decumbent to ascending, (arising laterally beneath a dense rosette), less than 0.1 dm.

(petiole slender);

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

(petiole slender);

blade (horizontal on the ground), obovate, 0.5–1.5 cm (width 4–8 mm, base tapering abruptly to petiole), margins entire, (apex usually acute, surfaces silvery from a dense incrustation of appressed, stellate trichomes).

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

blade oblanceolate, 0.5–1 cm (width 2–3 mm), margins entire, (surfaces densely stellate pubescent).

congested.

congested, (subumbellate, often almost sessile, barely exceeding basal leaves).

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

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

sepals (yellowish green), narrowly lanceolate, 4–5 mm;

petals (erect), oblanceolate, 6–7 mm, (claw weakly differentiated from blade).

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

(divaricate, straight), 5–10 mm.

(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).

didymous, ovate, inflated, 4.8–6 × 6–10 mm, (papery, basal and apical sinuses deep);

valves (retaining seeds after dehiscence), pubescent, trichomes loosely spreading;

replum obovate, 3–4 mm, as wide as or wider than fruit;

ovules 8 per ovary (2–4 abortive);

style 4–6 mm.

flattened.

flattened.

= 8, 10, 16, 24.