Flora of North America species comparison

solitary, erect, straight;

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

erect, to 50 cm.

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.

petiole to 3 mm (proximal leaves), absent (distal leaves);

blade ovate to hastate, rarely elliptic, basally lobed or unlobed, to 10 × 5 cm, base usually cuneate to truncate, sometimes acute, margins usually serrate, sometimes crenate, rarely entire, apex acute.

margins pinnate.

(fruiting) 0–2.5 × 2 mm.

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 orange, (6–)8–18.5 × (3–)4–10.5 mm, apex cuspidate, hairy abaxially on distal 1/2;

stamens 15–45, 5–9.5 mm, filaments monomorphic, filiform;

styles 5–10 mm.

cylindric, 30–43 × 12–17 mm, base tapering, not longitudinally ridged.

subcylindric to clavate, (5–)7–17 × 2–3.5 mm, base tapering gradually, capsule and pedicel not well-differentiated, walls thick, woody.

2.3–4 mm;

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

(1–)2–3(–4) per capsule, oblong, without transverse folds.

= 22.

= 20, 22.