Flora of North America species comparison

multiple, erect, straight;

branches along entire stem, all ± equal, antrorse, upcurved; hairy.

blade 19–47.5 × 5.8–9.1 mm, widest intersinus distance 4.6–7.1 mm;

proximal oblanceolate to elliptic, margins dentate, teeth 6–20, perpendicular to leaf axis, 0.5–1.9 mm;

distal lanceolate, deltate, or cordate, base clasping, margins entire or dentate, teeth 0–6, perpendicular to leaf axis, 0.4–1.4 mm;

abaxial surface with complex grappling-hook trichomes, adaxial surface with complex grappling-hook and needlelike trichomes, both surfaces green, moderately hairy.

margins entire.

petals golden yellow, 7.7–10.8 × 1.8–4.8 mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 7–7.3 × 1.2–2 mm, with anthers, second whorl with anthers;

anthers twisted after dehiscence, epidermis smooth;

styles 5.8–8 mm.

cup-shaped, 4–6.6 × 4–7.4 mm, base rounded, not longitudinally ridged.

coat anticlinal cell walls straight, papillae 15–46 per cell.