Flora of North America species comparison

multiple, erect, straight;

branches distal, distal longest, antrorse, straight; hairy.

solitary, erect, straight;

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

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.

blade 32.8–112.2 × 2.9–11.4 mm, widest intersinus distance 1–2.9 mm;

proximal oblanceolate to elliptic, margins pinnate, lobes 18–24, perpendicular to leaf axis, 0.8–4 mm;

distal elliptic to lanceolate, base not clasping, margins pinnate, lobes 6–16, perpendicular to leaf axis, 1–5.1 mm;

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

margins usually entire, occasionally pinnate.

margins entire.

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.

petals light to golden yellow, 9–14.7 × 3.1–6.4 mm, apex rounded, glabrous abaxially;

stamens light to golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 6.3–11.5 × 2.4–4.9 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 4.6–9.9 mm.

cup-shaped, 6.8–12 × (4–)4.8–9.1 mm, base tapering or rounded, not longitudinally ridged.

cup-shaped, 8.2–12.7 × 5.1–7.7 mm, base tapering to rounded, not longitudinally ridged.

coat anticlinal cell walls wavy, papillae 6–14 per cell.

coat anticlinal cell walls sinuous, papillae 12–21 per cell.

= 18.

= 18.