Flora of North America species comparison

erect, often branched (many) distally.

usually branched distally, rarely basally, (2.5–)4–10(–15) dm.

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–)2–10(–15) cm;

blade lanceolate, 10–45 cm, margins coarsely dentate or pinnatifid, lateral lobes oblong or lanceolate, (terminal lobe deltate or lanceolate, larger than lateral lobes).

(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 spreading, 2.5–4 × 1–1.5 mm;

petals (4–)4.5–7(–8) × (2–)3–5 mm, claw (slender), 1–2 mm;

filaments 1.5–3.5 mm;

anthers 0.8–1 mm.

divaricate, slender.

divaricate, straight, 1–2(–2.3) 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.

ovoid, or, rarely, suboblong and slightly constricted at middle, terete, not winged, 1- or 2-loculed, (0.5–)0.6–0.7(–0.8) cm × 3–4(–5) mm, (gradually tapering to apex);

style obsolete or, rarely, to 1 mm.

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

seed coat (smooth), not mucilaginous when wetted;

cotyledons spirolobal.

1 or 2 per fruit, 2–3.5 mm.

= 7.

= 14.