Flora of North America species comparison

erect, ascending, decumbent, or procumbent, unbranched or branched.

erect, or outer ones decumbent at base, (purplish proximally), 1–4 dm.

basal and cauline;

petiolate or sessile;

basal rosulate, petiolate, blade margins entire, dentate, or pinnately lobed;

cauline sessile, blade (base usually auriculate or sagittate, sometimes amplexicaul), margins dentate to lobed.

blade 4–8 cm × 10–18 mm, margins lyrately pinnatifid to pinnately lobed, (apex obtuse, lateral lobes decurrent on rachis, terminal lobes relatively large), surfaces hirsute (abaxial with simple and branched trichomes, adaxial with mostly simple ones).

blade broadly ovate to oblong, 1–3 cm × 5–15 mm (smaller distally), base auriculate, margins dentate to nearly lobed, (proximal with apex broadly obtuse, distal more acute, surfaces hirsute, trichomes mostly simple, spreading).

(several-flowered), often strongly elongated in fruit, (rachis straight).

sepals (deciduous), suberect, ascending, or spreading, oblong, (equal), lateral pair not saccate basally, (margins membranous);

petals yellow or white, broadly obovate, claw slightly differentiated from blade, (apex rounded, truncate, retuse, or emarginate);

stamens (erect), tetradynamous;

filaments dilated or not basally;

anthers oblong or sagittate, (not apiculate);

nectar glands confluent, subtending bases of median stamens, surrounding lateral stamens.

sepals (yellowish), 2.5–4 × 1.5–2 mm, sparsely to densely pubescent (trichomes appressed, branched, often with some spreading, single ones);

petals yellow, 6–8 × 4–5 mm, (not markedly differentiated into blade and claw), apex rounded;

filaments strongly dilated basally, (anthers oblong, 1.5 mm, glandular tissue thin, continuous beneath stamens, forming projections between single and paired stamens and abbreviated ring around bases of single stamens).

ascending to divaricate or recurved, (straight or slightly curved), slender.

divaricate-ascending, straight, (expanded apically), 10–20 mm, pubescent.

silicles, subsessile or sessile, globose, subglobose, subpyriform, suborbicular, orbicular, elliptic, cordate, or obovoid, terete, flattened, latiseptate, or angustiseptate;

valves (papery or leathery), not veined, glabrous or pubescent, (trichomes branched and/or simple);

replum not flattened;

septum complete, perforated, or reduced to a rim, (membranous);

ovules 4–40 per ovary;

style distinct, (persistent, slender);

stigma capitate, entire.

subsessile, subglobose, (slightly broader than long), 3–4 mm diam., (uncompressed);

valves densely pubescent, trichomes spreading, simple or branched;

replum ± orbicular;

septum complete;

ovules 4–8 per ovary;

style 2–3 mm, glabrous or pubescent proximally;

stigma slightly expanded.

sub-biseriate, flattened, margined, orbicular, suborbicular, or oval;

cotyledons accumbent.

orbicular or suborbicular (or slightly longer than broad), 2–2.5 mm.

= 7, 8, 9.

= 16.