Flora of North America species comparison

5–25 cm.

solitary, erect, straight;

branches usually distal, occasionally along entire stem, distal usually longest, antrorse, straight; hairy.

petiole absent;

blade ovate or obovate, to 45 × 35 mm, intersinus distance 2–4 mm.

blade 16.7–89 × 6.3–14.2(–20) mm, widest intersinus distance 3.1–9.7 mm;

proximal oblanceolate to elliptic, margins serrate to pinnate, teeth or lobes 10–24, slightly antrorse, 1.4–3.4 mm;

distal lanceolate, base usually not clasping, occasionally clasping, margins serrate to pinnate, teeth or lobes 8–14, slightly antrorse, 0.7–7 mm;

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

margins usually entire, sometimes toothed.

0(–1.5) mm.

petals yellow to orange, narrowly spatulate to obovate, 4.5–17 × 1.2–5 mm, apex rounded;

stamens 25–45, 7–21 mm;

styles 7–18 mm.

petals golden yellow, 11.7–15.8(–18) × 2–4.8 mm, apex acute, glabrous abaxially;

stamens golden yellow, 5 outermost not petaloid, filaments linear, not clawed, 10.2–13.2 × 0.6–1.6 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 6.7–13 mm.

3–7 × 3–4.5 mm.

usually cylindric, rarely cup-shaped, 10.4–25 × 5.5–8.3 mm, base tapering or rounded, not longitudinally ridged.

3–9 per capsule, edges prominently to inconspicuously ridged.

coat anticlinal cell walls straight, papillae 3–6 per cell.

= 28.

= 22.