Flora of North America species comparison

solitary, erect, straight;

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

multiple, erect or decumbent, zigzag;

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

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.

blade 8.1–29 × 4.1–12.7 mm, widest intersinus distance 4.1–7.4 mm;

proximal oblanceolate, margins entire;

distal elliptic, base not clasping, margins entire or dentate, teeth 0–8, perpendicular to leaf axis, 0.6–2.7 mm;

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

margins entire or pinnate.

margins entire.

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 golden yellow, 12.5–17.2 × 6.1–11.2 mm, apex rounded to obtuse, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, strongly clawed, 7–9.5 × 2.7–6 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 7–10 mm.

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

cup-shaped, 7–10 × 6.5–8 mm, base rounded, not longitudinally ridged.

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

coat anticlinal cell walls straight, papillae 9–13 per cell.

= 22.