Flora of North America species comparison

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

several from base (crowded), erect, not exceeding leaves.

(petiole slender);

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

usually absent.

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

(petiole not differentiated from blade);

blade linear-oblanceolate, 3–8(–13) mm, margins entire.

congested.

(secund), dense, corymbose, (few-flowered, not or barely exceeding leaves).

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

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

sepals (yellow-green), linear to narrowly triangular, 3.7–4.8 mm, (lateral pair subsaccate);

petals (deep yellow, slightly orange in center), spatulate, 5.2–6.5 mm, (claw joined at right angle).

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

(ascending to divaricate-ascending, straight), 3.5–6 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).

(becoming reddish or copper-colored in age), ovate, often slightly compressed (at margins apically), 3–5 mm, (apex acute);

valves (not retaining seeds after dehiscence), glabrous; (septum perforate or not);

ovules 4–8 per ovary;

style 1.8–3 mm.

flattened.

plump or slightly flattened, (strongly mucilaginous).

= 8, 10, 16, 24.