Flora of North America species comparison

solitary, erect, straight;

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

erect, becoming decumbent, to 60 cm.

blade 19–82 × 4.8–22.1 mm, widest intersinus distance 2.7–6.7 mm;

proximal oblanceolate to elliptic, margins serrate to pinnate, teeth or lobes 10–22, slightly antrorse or perpendicular to leaf axis, 1–5.5 mm;

distal elliptic to lanceolate, base not clasping, margins pinnate, lobes 8–14, usually perpendicular to leaf axis, 0.8–7 mm;

abaxial surface with simple grappling-hook and complex grappling-hook 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 or toothed.

(fruiting) 0.6–4 × less than 1 mm.

petals golden yellow, 7.6–12.3 × 2–3.8 mm, apex usually acute, occasionally rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 6.4–11.8 × 1.1–2.7 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 5.6–7.8 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, 10.8–20 × 5.3–7.6 mm, length more than 2 times diam., base tapering, not 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 4–5 per cell.

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

= 22.

= 20.