Flora of North America species comparison

solitary, erect, straight;

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

blade 31–92(–157) × 10.5–27.6(–41) mm, widest intersinus distance 5.2–23.3(–29) mm;

proximal lanceolate or elliptic, margins serrate to pinnate, teeth or lobes 8–22, slightly antrorse, 1.8–6 mm;

distal lanceolate, base clasping, margins usually serrate to pinnate, occasionally entire, teeth or lobes (0–)10–20, slightly antrorse, 1.4–7.6 mm;

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

petioles present;

blade lanceolate, to 9 cm;

margins shallowly lobed, lobes rounded.

petioles present, rarely absent, present in distalmost leaves;

blade broadly ovate to lanceolate, to 9 cm, base not cordate-clasping, margins dentate to serrate.

margins entire.

green, inconspicuous, not concealing pedicel, ovary, or capsule.

petals golden yellow, 5.7–9.2 × 1.3–3 mm, apex usually acute, occasionally rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 4.7–8.4 × 1–2.4 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 3.5–5.4 mm.

petals white to pale yellow, obovate, 10–40 mm, apex mucronate;

stamens 6–15 mm, less than 1/2 petal length, all fertile, none petaloid (flowers appearing to have 5 petals);

filaments ± monomorphic, linear, most or all distally 2-lobed, lobes 0.1–0.7 mm;

anther stalk longer than or equal to filament lobes;

style 9–13 mm.

cylindric, 13.6–23.5 × 5.1–7.8 mm, base tapering, not or slightly longitudinally ridged.

cylindric to ovoid, 9–18 × 5–8 mm, basal nodding, distal erect.

coat anticlinal cell walls straight, papillae 4–17 per cell.

widest at middle, not grooved;

seed coat anticlinal cell walls straight or wavy.

= 22.

= 20.