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, straight;

branches along entire stem, all ± equal, antrorse, 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 19–47.5 × 5.8–9.1 mm, widest intersinus distance 4.6–7.1 mm;

proximal oblanceolate to elliptic, margins dentate, teeth 6–20, perpendicular to leaf axis, 0.5–1.9 mm;

distal lanceolate, deltate, or cordate, base clasping, margins entire or dentate, teeth 0–6, perpendicular to leaf axis, 0.4–1.4 mm;

abaxial surface with complex grappling-hook trichomes, adaxial surface with complex grappling-hook and needlelike trichomes, both surfaces green, moderately hairy.

margins pinnate.

margins entire.

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, 7.7–10.8 × 1.8–4.8 mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 7–7.3 × 1.2–2 mm, with anthers, second whorl with anthers;

anthers twisted after dehiscence, epidermis smooth;

styles 5.8–8 mm.

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

cup-shaped, 4–6.6 × 4–7.4 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 15–46 per cell.

= 22.