Flora of North America species comparison

erect to decumbent, to 30 cm.

solitary, erect, straight;

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

petiole 10–65 mm;

blade hastate to ovate, usually basally lobed, sometimes unlobed, to 18 × 10 cm, base cuneate to truncate, margins serrate to crenate, apex acute.

blade 69–195 × 11.6–55.7 mm, widest intersinus distance 1.3–2.5(–3.5) mm;

proximal oblanceolate or elliptic, margins pinnatisect, lobes 16–26, slightly antrorse or perpendicular to leaf axis, 5.1–15.1 mm;

distal elliptic, base not clasping, margins pinnatisect, lobes 10–20, slightly antrorse or perpendicular to leaf axis, 6.2–12.3(–22.5) mm;

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

margins entire.

(fruiting) 1–3 × 2 mm (often appearing absent because thick and continuous with capsule).

petals orange or yellow, 5–15 × 3–7 mm, apex cuspidate, hairy abaxially at apex;

stamens 20–30, 5 mm, filaments heteromorphic, 5 outermost narrowly spatulate, inner filiform;

style 5 mm.

petals golden yellow, 30–42.2 × 5.7–10.8 mm, apex acute, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 27–37.4 × 4.8–9.7 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 24–32.4 mm.

subcylindric to clavate, 9–30 × 3–3.5 mm, base tapering gradually, capsule and pedicel not well-differentiated.

cylindric, 15–26 × 5–7.2 mm, base tapering to rounded, not longitudinally ridged.

5–9 per capsule, pyriform to oblong, without transverse folds.

coat anticlinal cell walls sinuous, papillae 8–12 per cell.

= 20.

= 20.