Flora of North America species comparison

5–25 cm.

solitary, erect, straight;

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

petiole absent;

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

blade 38.3–108 × 5.3–14.9 mm, widest intersinus distance 1.7–3.9 mm;

proximal oblanceolate to elliptic, margins pinnate, lobes 14–22(–26), perpendicular to leaf axis, 1.8–4.5 mm;

distal elliptic to lanceolate, base not clasping, margins pinnate, lobes 6–18, perpendicular to leaf axis, 1.3–4.5 mm;

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

margins entire or toothed to pinnate.

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 light yellow, 9.5–16.8 × 3.4–5.6 mm, apex usually rounded, rarely acute, glabrous abaxially;

stamens light yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 8.2–14.6 × 2.3–3.4 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 7.1–12.6 mm.

3–7 × 3–4.5 mm.

cup-shaped to cylindric, 9.8–18.8 × 5.2–7.3 mm, base tapering, not longitudinally ridged.

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

coat anticlinal cell walls sinuous, papillae 28–68 per cell.

= 28.