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 or along entire stem, ± equal, perpendicular to stem, especially proximal and mid-stem, or slightly antrorse, especially distal, straight; hairy.

blade 37–120 × 5–24.4 mm, widest intersinus distance 4.8–19.6 mm;

proximal oblanceolate to elliptic, margins serrate, teeth 14–30, slightly antrorse, 0.6–4.9 mm;

distal elliptic to lanceolate, base not clasping, margins serrate, teeth 12–30, slightly antrorse, 0.7–4.7 mm;

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

blade 38.1–95 × 6–17(–26) mm, widest intersinus distance 1.6–4.7 mm;

proximal oblanceolate, lanceolate, or elliptic, margins dentate to serrate or pinnate, teeth or lobes 10–22, slightly antrorse or perpendicular to leaf axis, 2–6.8 mm;

distal elliptic to lanceolate, base not clasping, margins dentate to serrate or pinnate, teeth or lobes 8–16, slightly antrorse or perpendicular to leaf axis, 2.4–8.5 mm;

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

margins pinnate.

margins entire.

petals white, 22.6–49 × 3.6–10.3 mm, apex acute, glabrous abaxially, stamens white, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 20–47 × 3–10.2 mm, without anthers, second whorl without anthers;

anthers straight after dehiscence, epidermis smooth;

styles 11.5–18.5 mm.

petals golden yellow, 8.3–14.5(–17.2) × 1.7–5.3 mm, apex acute to rounded, hairy abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 4.9–12.5 × 1.2–3.8 mm, with or without anthers, second whorl with anthers;

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

styles 5.4–10.4 mm.

cylindric, 14.5–29 × 6.9–12.3 mm, base tapering or rounded, not longitudinally ridged.

cup-shaped, 5–9 × 3.7–6.5 mm, base rounded, not longitudinally ridged.

coat anticlinal cell walls wavy, papillae 4–8 per cell.

coat anticlinal cell walls straight to slightly wavy, papillae 6–11 per cell.

= 20.

= 20.