Flora of North America species comparison

erect, unbranched or branched distally.

unbranched or branched distally, 3–10 dm.

basal and cauline;

petiolate or sessile;

basal (persistent in B. tournefortii), rosulate or not, petiolate, blade margins entire, dentate, or lyrate-pinnatifid;

cauline petiolate or sessile, blade (base sometimes auriculate or amplexicaul), margins entire, dentate, lobed, or sinuate-serrate.

petiole (winged), (1–)2–10(–17) cm;

blade ± lyrate-pinnatifid to pinnate to pinnatisect, (5–)10–40(–60) cm × 30–100(–200) mm, (margins sinuate-dentate, sometimes ciliate), lobes 2–4(–6) each side, (terminal lobe oblong-obovate, obtuse, large, blade surfaces usually setose).

(middle and distal) sessile;

base auriculate to amplexicaul, (margins subentire).

(corymbose), considerably elongated in fruit.

not paniculately branched, (with open flowers overtopping or equal to buds).

sepals usually erect or ascending, rarely spreading, oblong [ovate], lateral pair usually saccate basally;

petals yellow to orange-yellow [rarely white], obovate, ovate, elliptic, or oblanceolate, claw often differentiated from blade, (sometimes attenuate basally, apex rounded or emarginate);

stamens tetradynamous;

filaments slender;

anthers oblong or ovate, (apex obtuse);

nectar glands confluent or not, median glands present.

sepals (3–)4–6.5(–8) × 1.5–2 mm;

petals deep yellow to yellow, obovate, 6–11(–13) × (2.5–)3–6(–7) mm, claw 3–7 mm, apex rounded;

filaments 4–6(–7) mm;

anthers 1.5–2 mm.

erect, spreading, ascending or divaricately-ascending, often slender.

ascending to spreading, (5–)10–25(–30) mm.

siliques, dehiscent, sessile or stipitate, segments 2, linear, torulose or smooth, terete, 4-angled, or latiseptate; (terminal segment seedless or 1–3-seeded, usually filiform or conic, rarely cylindrical);

valves each prominently 1-veined, glabrous;

replum rounded;

septum complete;

ovules [4–]10–50 per ovary;

stigma entire or 2-lobed.

ascending to somewhat spreading, torulose, terete, (2–)3–8(–11) cm × 2–4(–5) mm;

valvular segment with 8–15 seeds per locule, (1.3–)2–5(–7.5) cm, terminal segment seedless, 8–22 mm.

uniseriate, plump, not winged, globose;

seed coat (reticulate or reticulate-alveolate), mucilaginous or not when wetted;

cotyledons conduplicate.

black, brown, or reddish, 1.1–2 mm diam.;

seed coat very finely reticulate-lightly alveolate, not mucilaginous when wetted.

= 7, 8, 9, 10, 11.

= 20.