Flora of North America species comparison

solitary, erect, straight;

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

blade 72–295 × 14–45 mm, widest intersinus distance 10.1–23.3 mm;

proximal oblanceolate or elliptic, margins serrate to pinnate, teeth or lobes 16–26, slightly antrorse, 1–16.5 mm;

distal elliptic to lanceolate, base clasping or not, margins serrate to pinnate, teeth or lobes 9–20, slightly antrorse, 5.3–13.7 mm;

surfaces with 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 pinnate.

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

petals white, 47–75 × 13–22.7 mm, apex acute to attenuate, glabrous abaxially;

stamens white to yellow, 5 outermost petaloid, filaments spatulate, strongly clawed, 48–75 × 12–23 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 36–53 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, 30–43 × 12–17 mm, base tapering, not longitudinally ridged.

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

2.3–4 mm;

coat anticlinal cell walls straight, papillae 4–10 per cell.

constricted and grooved at middle;

seed coat anticlinal cell walls straight, obscure.

= 22.

= 20.