Flora of North America species comparison

simple from base, decumbent to nearly prostrate, 0.5–1.3 dm.

simple or several from base, prostrate to erect, 0.5–2(–3.5) dm.

(strongly rosulate; shortly petiolate);

blade broadly obovate, 1.5–7.5 (width 7.5–26 mm, base gradually tapering to petiole), margins shallowly dentate, (apex obtuse).

blade suborbicular or obovate to elliptic, (1–)2–5(–7) cm, margins entire, sinuate, or shallowly dentate.

blade oblanceolate to broadly obovate, 1–2.5 cm, margins entire.

(often secund, proximal shortly petiolate, distal sessile);

blade linear to obovate or rhombic, 1–2.5(–4) cm, margins entire or shallowly dentate.

dense.

dense, compact, (usually elongated in fruit).

sepals (pale yellow or yellow-green), narrowly lanceolate to narrowly deltate, 4–8 mm;

petals yellow, broadly spatulate to obovate, 9–13 mm, (not clawed).

sepals elliptic, 5–8.5 mm, (lateral pair boat-shaped, saccate, median pair thickened apically, cucullate);

petals (yellow to orange, sometimes fading purplish), narrowly spatulate or obovate, (6–)7.5–12 mm, (claw undifferentiated from blade, or gradually narrowed to claw, slightly expanded basally).

(divaricate-ascending to widely spreading, slightly sigmoid to curved), 7–12 mm.

(usually sharply sigmoid, rarely nearly divaricate-spreading and straight), 5–15(–20) mm, (stout).

didymous, slightly flattened (contrary to replum) to uncompressed, 4–9 × 2–8 mm, (strongly coriaceous, apical and basal sinuses narrow, deep);

valves (retaining seeds after dehiscence), pubescent, trichomes appressed;

replum narrowly oblanceolate to narrowly linear-oblong, as wide as or wider than fruit, apex obtuse;

ovules 4 per ovary;

style more than 3 mm.

(erect), ellipsoid or ovoid, not or slightly obcompressed, (apex not compressed), (6–)7–12 mm;

valves densely pubescent, sometimes sparsely pubescent inside;

ovules (8–)12–20(–24) per ovary;

style 3–7 mm, (sometimes pubescent).

compressed.

flattened.

= 8.

= 10.