Flora of North America species comparison

1 or more, rigidly erect, 5-15 dm, 1-2.5 cm diam. at base.

(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.

(10-)15-30(-45) × (3-)5-9(-16) cm;

blade with 3, rarely 4 orders of leaflets and lobes; ultimate leaflets (10-)20-30(-60) × (5-)10-20(-25) mm, ultimate lobes oblong, apex acute.

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

bracts ovate, 2-5 × 1-3 mm.

paniculate, usually at least 5 times longer than wide;

bracts lanceolate to ovate, 3-5 × 1-2 mm, margins entire;

bracteoles absent, rarely present.

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.

erect, with slightly pungent odor;

pedicels rigid, 2-10 mm;

sepals ovate to cordate or nearly round, 3-7 × 2-5 mm;

petals golden yellow;

outer petals (10-)12-16(-22) × 2-4 mm, reflexed portion 4-7 mm;

inner petals (8-)15-17(-18) mm, blade 3-5 mm, claw 6-9 mm, confluent with and nearly as wide as blade, crest usually about 1-3 mm diam., scarcely exceeding apex;

filaments of each bundle connate from base to shortly below anthers, rarely distinct from near base; nectariferous tissue borne at base of median filament, not projecting into outer petal;

stigma shortly 2-horned, ca. 2 times wider than long.

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

ovoid, attenuate at both ends or sometimes rounded at base, (5-)15-25(-32) × 5-8 mm.

slightly reniform, very obscurely reticulate, elaiosome present.

slightly reniform, 1.5-2.2 mm diam., densely covered with tiny protuberances, elaiosome absent.

produced hybrids between Dicentra ochroleuca and D. chrysantha also had 2n = 32.

= 32.