Flora of North America species comparison

solitary (or multiple as wound response), erect, straight;

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

solitary, erect, straight;

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

blade 28–70 × 5.8–17.2 mm, widest intersinus distance 3.4–11.4 mm;

proximal oblanceolate, lanceolate, or elliptic, margins dentate to pinnate, teeth or lobes 10–20, perpendicular to leaf axis, 0.9–3.1 mm;

distal lanceolate, base usually not clasping, rarely clasping, margins usually dentate, occasionally serrate, teeth 8–18, usually perpendicular to leaf axis, occasionally slightly antrorse, 0.6–5.4 mm;

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

blade 26–74 × 6–19.2 mm, widest intersinus distance 4.5–11.4 mm;

proximal obovate, oblanceolate, or lanceolate, margins serrate, teeth 8–14, slightly antrorse, 0.6–4.5 mm;

distal elliptic to lanceolate, base not clasping, margins serrate, teeth 6–12, slightly antrorse, 1.3–4.1 mm;

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

margins entire or toothed.

margins entire.

petals white, 14.7–22(–24.4) × 1.9–4.4 mm, apex acute, glabrous abaxially;

stamens white, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 13.3–23.1 × 1.3–3.1(–4.4) mm, without anthers, second whorl without anthers;

anthers straight after dehiscence, epidermis smooth;

styles 7.6–12.9 mm.

petals golden yellow, (6.1–)7.3–10 × 1.6–3 mm, apex acute, glabrous abaxially;

stamens golden yellow, 5 outermost not petaloid, filaments linear to narrowly spatulate, not clawed, 4–8 × 0.7–1.5 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 3.7–7 mm.

cup-shaped to cylindric, 10.2–20.1 × 6.7–9.6 mm, base rounded to occasionally tapering, not longitudinally ridged.

cup-shaped to cylindric, 10.4–16 × 6.6–9 mm, base tapering or rounded, not longitudinally ridged.

coat anticlinal cell walls wavy, papillae 3–8 per cell.

coat anticlinal cell walls straight, papillae 6–16 per cell.

= 20.

= 22.