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 distal or occasionally along entire stem, distal or proximal longest, antrorse, straight or 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 38.3–108 × 5.3–14.9 mm, widest intersinus distance 1.7–3.9 mm;

proximal oblanceolate to elliptic, margins pinnate, lobes 14–22(–26), perpendicular to leaf axis, 1.8–4.5 mm;

distal elliptic to lanceolate, base not clasping, margins pinnate, lobes 6–18, perpendicular to leaf axis, 1.3–4.5 mm;

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

margins pinnate.

margins entire or toothed to 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, 9.5–16.8 × 3.4–5.6 mm, apex usually rounded, rarely acute, glabrous abaxially;

stamens light yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 8.2–14.6 × 2.3–3.4 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 7.1–12.6 mm.

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

cup-shaped to cylindric, 9.8–18.8 × 5.2–7.3 mm, base tapering, not longitudinally ridged.

2.3–4 mm;

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

coat anticlinal cell walls sinuous, papillae 28–68 per cell.

= 22.