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 or straight;

branches along entire stem, distal longest, antrorse, straight; 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 23–35.3 × 6.5–13(–16) mm, widest intersinus distance 3.7–11.3 mm;

proximal oblanceolate, margins dentate, teeth 4–10, perpendicular to leaf axis, 0.5–1.8 mm;

distal elliptic to lanceolate, base not clasping, margins dentate to pinnate, teeth or lobes 4–8, perpendicular to leaf axis, 1.3–3.6 mm;

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

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, 16.1–18.5 × 6.7–9.2 mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 7.8–9.3 × 2.3–3.3 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 6.3–8.6 mm.

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

cup-shaped, 8–12 × 6–7.2 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 11–15 per cell.

= 22.