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 or 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 21–44.4 × 5.9–11.2 mm, widest intersinus distance 1.6–3.4 mm;

proximal oblanceolate to elliptic, margins pinnate, lobes 6–14, slightly antrorse, 2.4–3.9 mm;

distal oblanceolate, elliptic, or lanceolate, base not clasping, margins pinnate, lobes 4–12, slightly antrorse, 1.8–3.9 mm;

abaxial surface with simple grappling-hook and complex grappling-hook trichomes, adaxial surface with simple grappling-hook and needlelike 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 light to golden yellow, 11.7–16.6 × 3.8–4.8 mm, apex rounded, glabrous abaxially;

stamens light to golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 10.4–14.6 × 2–3.8 mm, usually without, rarely with, anthers, second whorl with anthers;

anthers twisted or straight after dehiscence, epidermis papillate or not;

styles 6.8–9 mm.

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

cup-shaped, 7–11.9 × 5.7–7.3 mm, length to 2 times diam., base rounded, not longitudinally ridged.

2.3–4 mm;

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

coat anticlinal cell walls straight, papillae 38–45 per cell.

= 22.

= 20.