Flora of North America species comparison

1-several, erect to prostrate-ascending, (1.5-)2-4(-6) dm.

1-several, 10-15 dm or more.

crowded, compound;

blade with 2 orders of leaflets and lobes; ultimate lobes ovate, oblong-elliptic, or obovate, margins incised, apex subapiculate.

ca. 5, compound, to 10 dm;

blade with 2-4 orders of leaflets and lobes; ultimate lobes of proximal cauline leaves narrowly to broadly elliptic, 1-5 cm, apiculate.

racemose, (6-)10-16(-20)-flowered, primary racemes slightly to conspicuously exceeding leaves, secondary racemes fewer flowered, exceeded by leaves, cleistogamous-flowered racemes frequently present, 1-5-flowered, inconspicuous;

bracts elliptic to attenuate-ovate, 5-8 × 2-4 mm, margins denticulate, distal bracts usually much reduced, those of cleistogamous racemes minute.

paniculate, 50 or more flowers on primary axis;

bracts inconspicuous, linear or narrowly elliptic, rarely wider, proximal bracts ca. 10 mm, distal greatly reduced.

erect or spreading;

pedicel 2-6 mm;

sepals ovate, to 1.5 mm, margins often sinuate or dentate;

petals pale to medium yellow; spurred petal slightly to strongly curved, (11-)12-14(-15) mm, spur straight, 4-7 mm, apex obtuse or ± globose, crest low, wrinkled, rarely obsolescent, marginal wing well developed, sometimes revolute, unspurred outer petal slightly bent, 9-11 mm, crest low;

inner petals oblanceolate, 7-10 mm, blade apex 2 times or more wider than base, basal lobes obscure, claw 3-4 mm; nectariferous spur straight or curved, sometimes clavate, ca. 3/5 length of petal spur;

style ca. 4 mm;

stigma rectangular, 2-lobed, 1/2 as long as wide, with 8 papillae.

ascending or spreading;

pedicel 3-5 mm;

sepals persistent, round and irregularly dentate to ovate, lunate, or attenuate-lanceolate with broad, sometimes lobed base, 2-3 mm;

petals light pink to white, inner ones tipped reddish purple; spurred petal often incurved, 16-25 mm, spur tapered or not, 9-16 mm, apex obtuse, crest absent, inconspicuous, or extending into beak beyond petal apices, marginal wing narrow to broad, conspicuous; unspurred outer petal 10-15 mm;

inner petals 7-12 mm, claw 3-5 mm; nectariferous spur 1/2-3/4 length of petal spur;

style 3-4 mm;

stigma roughly rectangular, with 8 papillae.

erect, linear, slender, straight to slightly incurved, 10-35 mm, essentially glabrous, usually shorter in cleistogamous-flowered racemes.

reflexed, ellipsoid, 10-15 × ca. 3-5 mm.

ca. 1.5 mm diam., concentrically and minutely decorated, marginal ring absent.

ca. 2.5 mm diam., with numerous minute protuberances.