Flora of North America species comparison

(simple or several-branched from base) erect, branched distally, (0.9–)2–4.5(–6.3) dm.

erect, unbranched or branched proximally or distally, (0.6–)2–6(–7.5) dm.

not rosulate;

blade margins dentate.

not rosulate;

blade margins pinnatifid.

shortly petiolate or sessile;

blade oblong or oblanceolate to obovate, 1.5–7(–13.3) cm × (5–)10–28(–50) mm, (lateral lobes much smaller than terminal), base auriculate or not, margins dentate or less frequently sinuate, or (lateral lobes) denticulate or entire.

petiolate (to 4 cm) or (distal) sessile;

blade lyrate-pinnatipartite or undivided, obovate, oblong, or lanceolate, (lobes 0 or 1–5 (or 6) on each side), (2.5–)3.5–12(–16) cm × (8–)15–40(–50) mm, base auriculate or not, margins entire, irregularly crenate, or serrate, (entire or denticulate distally).

considerably elongated.

elongated.

sepals ascending to spreading, ovate, 1.2–2 × 0.5–0.8 mm;

petals absent;

median filaments 1–1.6 mm;

anthers ovate, 0.2–0.3 mm.

sepals ascending, oblong-ovate, 2–3 × 0.8–1.5 mm;

petals yellow, obovate or spatulate, (2.5–)3–4(–4.5) × 1–1.5 mm;

median filaments 1.5–3 mm;

anthers oblong, 0.5–0.8 mm.

divaricate-ascending to horizontal, straight, 0.5–2(–4) mm, (slender or stout).

usually ascending or divaricate, rarely slightly reflexed, straight, (2–)3–10(–15) mm.

siliques, straight or curved, oblong to oblong-linear, (4–)6–9(–12) × (1.4–)1.8–2.8(–3.5) mm;

ovules 158–242 per ovary;

style 0.1–0.5 mm.

siliques, often curved-ascending, linear, (7–)10–24(–30) × 1–1.5(–2) mm;

ovules (60–)70–110 per ovary;

style (0.5–)1–1.5(–2) mm, (slender, narrower than fruit).

biseriate, yellow-brown, cordiform, 0.4–0.5 mm, foveolate.

biseriate or nearly so, reddish brown, ovate or ovate-orbicular, 0.5–0.9 mm (0.4–0.6 mm diam.), foveolate.

= 16.

= 16, 24, 32, 48.