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, straight;

branches along entire stem, distal longest or 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 18–56 × 1.9–5.9 mm, widest intersinus distance 0.7–2.1 mm;

proximal oblanceolate to elliptic, margins dentate to pinnate, teeth or lobes 6–12, perpendicular to leaf axis, 0.8–2.1 mm;

distal elliptic, lanceolate, or linear, base not clasping, margins usually dentate, rarely entire, teeth (0–)4–6, perpendicular to leaf axis, 0.4–2.1 mm;

abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, adaxial surface with simple grappling-hook, needlelike, and rarely complex grappling-hook 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, 8.7–14.2 × 3.1–4.7 mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 7–13.1 × 2–3.3 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 6.2–8.3 mm.

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

cup-shaped to cylindric, 5.9–10.3 × 3.8–4.8 mm, base rounded to occasionally tapering, not longitudinally ridged.

2.3–4 mm;

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

coat anticlinal cell walls wavy, papillae 24–27 per cell.

= 22.

= 22.