Flora of North America species comparison

erect or subdecumbent, unbranched or branched.

unbranched or branched basally or distally, (0.3–)0.5–2.8(–4) dm.

basal and cauline;

petiolate, sessile, or subsessile;

basal (withered by fruiting), loosely rosulate or not;

petiolate [subsessile], blade margins entire or obscurely dentate;

cauline blade (base cordate to amplexicaul), margins entire or repand.

(not rosulate or loosely so);

petiole 0.5–1.3 cm;

blade ovate or broadly elliptic, 0.3–2(–2.7) cm × 2–10 mm, base cuneate or attenuate, margins entire or, rarely, obtusely and sparsely dentate, apex rounded.

blade ovate-cordate or suboblong, (1–)2–4(–5.5) cm × (2–)5–15(–20) mm, base cordate-amplexicaul, margins entire or repand, apex obtuse.

(several-flowered), considerably elongated in fruit.

sepals ovate or oblong, (margins membranous);

petals white, oblong or spatulate, (sometimes slightly unequal), claw (short or) undifferentiated from blade, (apex rounded [obtuse]);

stamens slightly tetradynamous;

filaments not dilated basally;

anthers ovate, (apex obtuse);

nectar glands (2 or 4), lateral, 1 on each side of lateral stamen (when 4).

sepals (0.8–)1–1.5(–2) × 0.5–1 mm, (margins white);

petals 1.5–3.5(–4.7) × 0.5–1.3 mm;

filaments 1–1.5(–2) mm;

anthers 0.1–0.2 mm.

divaricate, straight or recurved, slender.

(2.5–)4–6(–8) mm.

sessile, usually obcordate, rarely obovate, (apex emarginate), strongly angustiseptate;

valves keeled, (winged around, much wider apically);

replum rounded;

septum complete, (not veined);

ovules (4–)6–8(–10) per ovary;

style obsolete or distinct, (included in apical notch of fruit);

stigma capitate.

3–6.5(–8) × (2.5–)3–6(–7) mm, base obtuse, apical notch 1–1.5 mm deep;

wings 1–2 mm wide apically, much narrower basally;

style obsolete or 0.1–0.3 mm.

plump, not winged, ovoid;

seed coat (smooth), mucilaginous when wetted;

cotyledons accumbent.

yellow-brown, 0.9–1.3(–1.5) × 0.7–1(–1.2) mm.

= 7.

= 14, 28, 42.