Flora of North America species comparison

solitary, erect, straight;

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

solitary, erect, straight;

branches usually distal, occasionally along entire stem, distal usually 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 16.7–89 × 6.3–14.2(–20) mm, widest intersinus distance 3.1–9.7 mm;

proximal oblanceolate to elliptic, margins serrate to pinnate, teeth or lobes 10–24, slightly antrorse, 1.4–3.4 mm;

distal lanceolate, base usually not clasping, occasionally clasping, margins serrate to pinnate, teeth or lobes 8–14, slightly antrorse, 0.7–7 mm;

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

margins pinnate.

margins usually entire, sometimes 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, 11.7–15.8(–18) × 2–4.8 mm, apex acute, glabrous abaxially;

stamens golden yellow, 5 outermost not petaloid, filaments linear, not clawed, 10.2–13.2 × 0.6–1.6 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 6.7–13 mm.

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

usually cylindric, rarely cup-shaped, 10.4–25 × 5.5–8.3 mm, base tapering or rounded, not longitudinally ridged.

2.3–4 mm;

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

coat anticlinal cell walls straight, papillae 3–6 per cell.

= 22.

= 22.