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 or multiple, erect, straight;

branches distal, 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 41–121 × 1.5–40 mm, widest intersinus distance 1.1–3.3 mm;

proximal oblanceolate, elliptic, or linear, margins entire or serrate to pinnatisect, teeth or lobes 0–26, slightly antrorse, (0.9–)2.4–18.6 mm;

distal oblanceolate, elliptic, lanceolate, or linear, base not clasping, margins entire, serrate, or pinnatisect, teeth or lobes 0–22, slightly antrorse, 0.8–18 mm;

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

margins pinnate.

margins entire or pinnate.

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 light to golden yellow, (10.4–)11.7–24.6 × 1.8–5.1 mm, apex acute to rounded, glabrous abaxially;

stamens light to golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 10–21 × 1.4–4 mm, without anthers, second whorl with anthers;

anthers twisted or occasionally straight after dehiscence, epidermis papillate;

styles 5.5–12.7 mm.

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

cup-shaped to cylindric, 6.7–20.2 × 4.5–8.5 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 sinuous, papillae 6–12 per cell.

= 22.

= 20.