Flora of North America species comparison

solitary, erect, straight;

branches distal or along entire stem, proximal or distal longest, antrorse, upcurved; hairy or glabrescent.

blade 17.4–196 × 6.7–40.4 mm, widest intersinus distance 2.4–24.6 mm;

proximal oblanceolate, lanceolate, or elliptic, margins pinnate, lobes 14–44, slightly antrorse, 2.5–8.9 mm;

distal lanceolate, base clasping or not, margins pinnate, lobes 6–42, slightly antrorse, 2.1–13.8 mm;

abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, adaxial surface with needlelike trichomes.

petioles present or absent;

blade oblanceolate, to 11 cm;

margins shallowly lobed, lobes rounded.

petioles absent;

blade ovate to lanceolate, to 11 cm, base often cordate-clasping, margins deeply to shallowly lobed, lobes acute.

margins entire or pinnate.

green, inconspicuous, not concealing pedicel, ovary, or capsule.

petals golden yellow, 23.5–70 × 3–17.3 mm, apex acute, glabrous abaxially;

stamens golden yellow, 5 outermost not petaloid, filaments linear to narrowly elliptic, not clawed, 17.7–55 × 0.5–2(–2.5) mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 20.4–57 mm.

petals yellow to orange, obovate, 12–31 mm, apex mucronate;

stamens 4–12 mm, less than 1/2 petal length, all fertile, none petaloid (flowers appearing to have 5 petals);

filaments ±monomorphic, linear, most or all distally 2-lobed, lobes to 0.3 mm;

anther stalk longer than filament lobes;

style 6–15 mm.

cup-shaped to cylindric, 10.6–43 × 6.3–11.1 mm, base tapering or rounded, not longitudinally ridged.

cylindric to cup-shaped, 13–25 × 5–8 mm, erect.

coat anticlinal cell walls straight, papillae 4–11 per cell.

widest at middle, not grooved;

seed coat anticlinal cell walls deeply wavy.

= 22.