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 oblanceolate to lanceolate, to 10 cm;

margins shallowly lobed, lobes rounded.

petioles usually present, rarely absent;

blade broadly ovate to lanceolate, to 10 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 pale yellow to white, lanceolate to oblanceolate, 6–12 mm, apex acute;

stamens 3–12 mm (fertile 3–8 mm), 1/2 to ± equal petal length, 1–3(–5) outermost staminodial and petaloid (flowers appearing to have 6–8(–10) petals);

filaments heteromorphic, 1–3(–5) outermost oblanceolate, inner linear, all unlobed;

style 5–6.5 mm.

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

cylindric to ovoid, 9–13 × 5–7 mm, proximal nodding, distal erect.

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

constricted and grooved at middle;

seed coat anticlinal cell walls straight, obscure.

= 22.

= 20.