Flora of North America species comparison

erect, unbranched or sometimes branched distally, (0.5–)1.5–11(–18) dm.

petiole 0.5–5 cm;

blade pinnate or, sometimes, 2-pinnate, broadly oblanceolate to ovate in outline, 2.5–11.4(–15.2) cm, lateral lobes lanceolate, (to 10 × 4 mm), margins incised.

sessile or shortly petiolate;

blade smaller distally, distal lobes often narrower, surfaces often glabrous or sparsely pubescent.

usually petiolate, sometimes sessile;

blade base not auriculate, margins usually pinnatisect or dentate, sometimes entire.

elongated or not in fruit, (flowers overtopped by developing fruits).

ebracteate or bracteate, often elongated in fruit.

sepals erect, yellowish, oblong, 1.6–2.7 mm, glabrous;

petals narrowly oblanceolate, 2–2.5 × 0.3–0.6 mm;

median filaments 2.5–3.5 mm;

anthers 0.3–0.4 mm.

actinomorphic;

sepals erect, ascending, spreading, or reflexed, lateral pair not saccate basally;

petals usually yellow, sometimes white [pink or purple], claw usually present, sometimes absent, often obscure, obsolete, or distinct;

filaments unappendaged, not winged;

pollen 3-colpate.

divaricate to ascending, (often recurved in age), slender, (3–)4–9(–13) mm.

erect to widely spreading, narrowly linear, slightly torulose, (9–)14–30(–34) × 0.6–1.1 mm, (usually terete, rarely slightly flattened, often curved inward);

valves each with obscure midvein;

septum not veined;

ovules 30–62 per ovary;

style obsolete, 0.07–0.3 mm, glabrous.

silicles or siliques, dehiscent, unsegmented, terete or angustiseptate;

ovules 4–100[–numerous] per ovary;

style usually distinct, sometimes obsolete or absent;

stigma entire.

uniseriate, light brown, narrowly oblong, 1–1.5 × 0.3–0.5 mm.

usually biseriate or uniseriate (rarely 4-seriate in Tropidocarpum);

cotyledons usually incumbent, rarely accumbent.

stalked, dendritic or forked, sometimes simple, rarely absent.

= 14.