Flora of North America species comparison

erect, often branched (many) distally.

unbranched or branched basally and distally, 1.5–7(–10) dm, (often white-hispid proximally and trichomes simple, glabrous distally).

basal and cauline;

petiolate, sessile, or subsessile;

basal not rosulate [rosulate], petiolate, blade margins entire, pinnatifid, or lyrate;

cauline sessile (subsessile distally), blade (base cuneate, attenuate), margins dentate or entire.

petiole 1–4(–6) cm;

blade lanceolate (in outline), lyrate to sinuate-pinnatifid, or runcinate-pinnatisect, (1–)3–15(–19) cm, lateral lobes oblong or lanceolate, (smaller than terminal lobe).

(distalmost) blade lanceolate or sublinear.

(corymbose or paniculate), considerably elongated in fruit.

sepals (yellowish green), oblong, (margins membranous), (glabrous, [pubescent or glandular]);

petals obovate, (longer than sepals), claw distinct or absent, (apex obtuse to emarginate);

stamens strongly tetradynamous;

filaments (yellowish), not dilated basally [dilated];

anthers oblong [ovate], (apex obtuse);

nectar glands confluent, subtending bases of stamens, median glands present.

sepals ascending to spreading, 3–4 × 1–1.5 mm;

petals (8–)10–13 × 4.5–6 mm, claw minute or absent;

filaments 3.5–6 mm;

anthers 1–1.3 mm.

divaricate, slender.

divaricate, straight, 1.5–2.5(–3) cm.

nutletlike, sessile, (readily detached from pedicel), oblong, ovoid, or subglobose, smooth, terete, 4-angled, or with 4 cristate wings, (1–4-loculed), (woody);

valves (not distinct) not veined, glabrous;

replum not distinct;

septum subwoody or absent;

ovules 2–4 per ovary;

style obsolete or distinct, (slender, filiform or subconical);

stigma capitate.

oblong to subglobose, subquadrangular, with 4 irregularly dentate wings, 4-loculed, (0.8–)0.9–1.3(–1.4) cm × 5–6.5 mm;

style 3.5–5(–6) mm.

plump [flattened], not winged, subglobose to ovoid [oblong];

seed coat (smooth), not mucilaginous when wetted;

cotyledons spirolobal.

3 or 4 per fruit, 2–3.5 mm.

= 7.

= 14.