Flora of North America species comparison

solitary, erect, straight;

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

erect, becoming decumbent, to 60 cm.

blade 31–92(–157) × 10.5–27.6(–41) mm, widest intersinus distance 5.2–23.3(–29) mm;

proximal lanceolate or elliptic, margins serrate to pinnate, teeth or lobes 8–22, slightly antrorse, 1.8–6 mm;

distal lanceolate, base clasping, margins usually serrate to pinnate, occasionally entire, teeth or lobes (0–)10–20, slightly antrorse, 1.4–7.6 mm;

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

petiole to 25 mm;

blade usually hastate or ovate, distal sometimes elliptic, basally lobed or unlobed, to 8.4 × 5.5 cm, base usually truncate, sometimes obtusely cuneate, margins usually serrate or dentate to crenate, sometimes entire, apex acute.

margins entire.

(fruiting) 0.6–4 × less than 1 mm.

petals golden yellow, 5.7–9.2 × 1.3–3 mm, apex usually acute, occasionally rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 4.7–8.4 × 1–2.4 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 3.5–5.4 mm.

petals creamy yellow to orange, 6.5–13 × 3.5–7 mm, apex cuspidate, hairy on apex;

stamens 20–35, 6–11 mm, filaments heteromorphic, 5 outermost narrowly spatulate, inner filiform;

style 8–10 mm.

cylindric, 13.6–23.5 × 5.1–7.8 mm, base tapering, not or slightly longitudinally ridged.

usually lingulate to funnelform, rarely ovoid, 10–18 × 4–5.8 mm, base rounded or cuneate, capsule and pedicel well-differentiated.

coat anticlinal cell walls straight, papillae 4–17 per cell.

(4–)6–8 per capsule, pyriform, without transverse folds.

= 22.

= 20.