Flora of North America species comparison

multiple, erect, straight;

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

blade 17–103 × 7.6–41.2 mm, widest intersinus distance 5.1–35.3 mm;

proximal oblanceolate to elliptic, margins serrate, teeth 6–22, slightly antrorse, 0.4–5.3 mm;

distal elliptic, lanceolate, or deltate, base clasping, margins serrate, teeth 6–16, slightly antrorse, 0.5–4.2 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, 7–14.5(–16.2) × 1.7–5.2 mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 5.3–11.1(–15.4) × 0.6–4.4 mm, with anthers, second whorl with anthers;

anthers twisted after dehiscence, epidermis smooth;

styles 3.8–8.1 mm.

cup-shaped, 5.8–9 × 5.2–8.8 mm, base rounded, not longitudinally ridged.

coat anticlinal cell walls straight, papillae 6–17 per cell.

= 22.