Flora of North America species comparison

solitary, erect, straight;

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

multiple, erect or decumbent, zigzag;

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

blade 72–295 × 14–45 mm, widest intersinus distance 10.1–23.3 mm;

proximal oblanceolate or elliptic, margins serrate to pinnate, teeth or lobes 16–26, slightly antrorse, 1–16.5 mm;

distal elliptic to lanceolate, base clasping or not, margins serrate to pinnate, teeth or lobes 9–20, slightly antrorse, 5.3–13.7 mm;

surfaces with needlelike trichomes.

blade 13.6–33.3 × 7.2–18.5 mm, widest intersinus distance 6.2–14.8 mm;

proximal elliptic, margins dentate, teeth 4–6, perpendicular to leaf axis, 0.5–0.6 × 1.2–1.5 mm;

distal oblanceolate to elliptic, base usually not clasping, rarely clasping, margins dentate to serrate, teeth 4–8, slightly antrorse or perpendicular to leaf axis, 0.6–2.5 mm;

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

margins pinnate.

margins entire or slightly toothed.

petals white, 47–75 × 13–22.7 mm, apex acute to attenuate, glabrous abaxially;

stamens white to yellow, 5 outermost petaloid, filaments spatulate, strongly clawed, 48–75 × 12–23 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 36–53 mm.

petals golden yellow, 7.7–14.8 × 2.7–5.9 mm, apex acute, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, strongly clawed, 6–11 × 1.9–5.2 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 5.4–9.7 mm.

cylindric, 30–43 × 12–17 mm, base tapering, not longitudinally ridged.

cup-shaped, 4.2–8 × 4.9–7.6 mm, base rounded, not longitudinally ridged.

2.3–4 mm;

coat anticlinal cell walls straight, papillae 4–10 per cell.

coat anticlinal cell walls straight, papillae 4–6 per cell.

= 22.