Flora of North America species comparison

(10-)14-24(-30) × (4-)6-14(-18) cm;

petiole (5-)8-16(-22) cm;

blade with 4 orders of leaflets and lobes;

abaxial surface glaucous; ultimate lobes linear to linear-elliptic or linear-obovate, (2-)5-15(-23) × (0.4-)2-4 mm, usually minutely apiculate.

racemose, 3-12-flowered, usually exceeding leaves, (10-)15-27(-33) cm;

bracts ovate, 2-5 × 1-3 mm.

pendent, very fragrant;

pedicels (2-)3-7(-14) mm;

sepals triangular to ovate, 2-4 × 1-2 mm, apex acuminate;

petals white;

outer petals (10-)12-16(-20) × (2-)4-5(-8) mm, reflexed portion 3-5 mm;

inner petals (10-)12-15(-18) mm, blade 2-4 mm, claw linear-elliptic, 5-9 mm, crest prominent, ca. 2 mm diam., exceeding apex by ca. 2 mm;

filaments of each bundle distinct nearly to base; nectariferous tissue forming 0.5-1 mm spur oriented vertically;

style 4-7 mm;

stigma shallowly 2-horned with 2 lateral papillae.

ovoid, attenuate at both ends, (5-)9-13(-17) × 3-6 mm.

slightly reniform, very obscurely reticulate, elaiosome present.