Flora of North America species comparison

simple from base, decumbent, (occasionally few-branched), 0.5–1.5(–2) dm.

few or several from base, prostrate to decumbent, (unbranched or branched), 0.5–1.5 dm.

blade elliptic to broadly obovate, triangular, rhombic, or round, 1.5–3(–4) cm, margins often sinuate or shallowly lobed.

blades orbicular to broadly obovate, 1.5–3 cm, margins usually entire, rarely remotely dentate.

(sessile or shortly petiolate);

blade elliptic to oblanceolate to obovate, 0.5–1.5 cm, (base narrowed to petiole), margins entire.

(sessile or shortly petiolate);

blade elliptic to oblanceolate, 1–1.5(–2.5) cm, margins entire, (apex obtuse).

compact to loose.

dense, (elongated in fruit).

sepals oblong to broadly elliptic, 4–7.5 mm, (lateral pair saccate or not);

petals spatulate, 7.5–10 mm.

sepals ovate or oblong-elliptic, 5–5.5 mm, (lateral pair not saccate);

petals cuneate or broadly obovate, ca. 7 mm, (sometimes slightly narrowed to a broad claw, apex sometimes retuse).

(ascending or divaricate-spreading, straight to loosely sigmoid or curved), 4–10 mm.

(sharply recurved), 5–10 mm, (stout).

(sessile or substipitate), elliptic, suborbicular, or oblong, strongly compressed (angustiseptate), 5–9 mm, (rounded to sharply keeled on 1 side, edges ± keeled);

valves: (margins covering replum edges or not), usually pubescent throughout or, rarely, glabrous inside;

ovules (4–)8–14(–16) per ovary;

style 2–4.5(–5) mm.

subglobose to broadly obovoid, strongly inflated (often slightly angustiseptate), 5–7 mm, (papery);

valves sparsely pubescent; (septum fenestrate, perforate, or obsolete);

ovules 4–8 per ovary;

style 2–3 mm.

slightly flattened.

somewhat flattened.