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 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 25–100 × 1–18.1 mm, widest intersinus distance 1–4.2 mm;

proximal spatulate to elliptic, margins entire or dentate to pinnatisect, teeth or lobes 0–26, slightly antrorse, 0.6–9.5 mm;

distal oblanceolate, elliptic, or lanceolate, base not clasping, margins entire, serrate, or pinnatisect, teeth or lobes 0–24, slightly antrorse, 0.4–7.1 mm;

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

margins pinnate.

margins usually entire, occasionally 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 yellow, 11.4–19(–22.7) × 1.8–3.6(–5) mm, apex acute, glabrous abaxially;

stamens light yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 11–18.1(–22.7) × (0.5–)1–3.7 mm, without anthers, second whorl without anthers;

anthers straight after dehiscence, epidermis papillate;

styles 7.5–11.4 mm.

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

cup-shaped, 6.8–12 × (4–)4.8–9.1 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 wavy, papillae 6–14 per cell.

= 22.

= 18.