Flora of North America species comparison

multiple, erect or decumbent, zigzag or straight;

branches distal or along entire stem, distal longest or all ± equal, antrorse, straight to upcurved; hairy.

multiple, erect, zigzag;

branches distal or along entire stem, distal longest or all ± equal, antrorse, straight to upcurved; hairy.

blade 20–49(–57) × 4.2–19 mm, widest intersinus distance 1.1–5.3 mm;

proximal oblanceolate to elliptic, margins pinnate to pinnatisect, lobes 4–10, slightly antrorse, 0.7–7.6 mm;

distal linear to lanceolate, base not clasping, margins entire or pinnate, lobes 0–10, slightly antrorse, 1.9–7.8 mm;

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

blade 14–26.3 × 5.1–10.8 mm, widest intersinus distance 2.3–5.2 mm;

proximal oblanceolate to elliptic, margins usually 3-fid, rarely entire or pinnate, teeth or lobes usually 2, rarely 0 or 4, perpendicular to leaf axis, 0.8–2.7 mm;

distal elliptic, base not clasping, margins 3-fid to occasionally pinnate, teeth or lobes usually 2, occasionally 4, perpendicular to leaf axis, 1.5–3.5 mm;

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

margins entire.

margins usually entire, rarely pinnate.

petals golden yellow, 10.6–17.9 × 5.1–9 mm, apex obtuse, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments oblanceolate, slightly clawed, 6.5–10.5 × 2–4.5 mm, with anthers, second whorl with anthers;

anthers twisted or straight after dehiscence, epidermis smooth;

styles 6–11.5 mm.

petals golden yellow, 8.3–13.6 × 2.6–4.8(–6.2) mm, apex acute, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments broadly spatulate, strongly clawed, 6–8(–9.1) × 2.3–4.4 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 5–7.9 mm.

cup-shaped to cylindric, 6–13.6 × 3.4–6 mm, base tapering to rounded, not longitudinally ridged.

cup-shaped, 4–7.3 × 3.3–5.8 mm, base rounded, not longitudinally ridged.

coat anticlinal cell walls straight, papillae 4–9 per cell.

coat anticlinal cell walls straight, papillae 4–5 per cell.

= 22.