Flora of North America species comparison

erect [prostrate], branched distally, (angular [not angular]).

(1.5–)2–9(–12) dm.

basal and cauline;

petiolate and sessile;

basal rosulate or not, (and proximal cauline) petiolate, blade margins usually entire, crenate or lobed, rarely dentate or repand;

cauline sessile, blade (base auriculate or amplexicaul) margins entire, dentate, or lobed.

petiole (0.5–)2–10(–17) cm;

blade lyrate-pinnatifid, (1–)2–8(–10) cm, lobes 1–3(–5) on each side (rarely early ones undivided), lateral lobes oblong or ovate, 0.3–2(–4) cm × 1–8(–15) mm, sometimes slightly fleshy, margins entire, repand, crenate, or dentate, terminal lobe (ovate or suborbicular), (0.7–)1.5–4.5(–7) cm × (4–)10–30(–50) mm, (surfaces glabrous or margins ciliate).

blade ovate or suborbicular (undivided), margins usually coarsely dentate, rarely subentire; conspicuously auriculate, auricles ovate or narrowly oblong (to 10 × 5 mm), glabrous.

(corymbose, several-flowered), considerably [slightly] elongated in fruit, (rachis striate).

sepals (sometimes persistent), erect [spreading], oblong [ovate, linear], lateral pair saccate or not basally, (apex often cucullate);

petals yellow or pale yellow [creamy white], spatulate or oblanceolate, (longer than sepals), claw obscurely differentiated from blade, (apex obtuse or rounded);

stamens tetradynamous;

filaments (yellow), not dilated basally;

anthers oblong, (apex obtuse);

nectar glands (4): lateral annular, median toothlike.

sepals 3–4.5(–5) × 1–1.5 mm, lateral pair slightly saccate basally, margins scarious;

petals yellow, spatulate or oblanceolate, (5–)6–9(–10) × 1.5–2.5(–3.5) mm, base attenuate, apex rounded;

filaments 3–4.5 mm;

anthers 0.7–1.2 mm;

ovules 18–24(–28) per ovary;

gynophore to 0.5 mm.

(sometimes absent), erect to divaricate, slender or stout.

divaricate to ascending or erect, 3–7 mm, terete or subquadrangular, thickened (narrower than fruit).

siliques, sessile or shortly stipitate, usually linear, rarely elliptic-linear, smooth or torulose, terete, 4-angled, or latiseptate;

valves each with prominent midvein and distinct marginal veins, usually glabrous, rarely pubescent;

replum rounded;

septum complete;

ovules 16–52 per ovary;

style obsolete or distinct;

stigma capitate, (sometimes slightly 2-lobed).

erect to erect-ascending, rarely appressed to rachis, torulose, terete, somewhat compressed, or 4-angled, (0.7–)1.5–3 cm × 1.2–2 mm;

style slender, (1–)1.5–3(–3.5) mm.

uniseriate [sub-biseriate], plump or slightly flattened, not winged [winged or margined], oblong, ovoid, or orbicular;

seed coat (reticulate or, rarely, tuberculate), not mucilaginous when wetted;

cotyledons accumbent.

dark brown, plump, broadly ovoid to oblong or subglobose, 1.2–1.5 × 1–1.2 mm.

= 8.

= 16.