Flora of North America species comparison

stipules free from petiole, 1-veined, subulate, 5–6 mm, subequal to petiole;

petiole 5–7 mm, 1/10–1/4 length of blade, stellate-puberulent;

blade ± rhombic, 2.5–9 cm, smaller distally, 2–3(–4) times longer than wide, base usually cuneate, sometimes somewhat truncate to subcordate, margins serrate distally, entire basally, apex acute to subobtuse, surfaces stellate-puberulent or glabrescent adaxially.

stipules free from petiole, linear-lanceolate, 3–4 mm, shorter than petiole;

petiole to 0.9 mm, shorter than blade, glabrous;

blade palmately 5–7-lobed, maplelike, to 24 cm, ± as long as wide, smaller upward, base cordate, margins serrate, apex long-acuminate, surfaces glabrous.

axillary solitary flowers.

axillary, subumbellate, 2–10-flowered pedunculate corymbs, forming terminal panicles.

slender, (1–)3–4 cm, 4–6 times length of calyx, much shorter than to ± equaling subtending leaf, at least distalmost.

calyx ribbed, 5–6 mm, puberulent, lobes ovate;

petals yellow, 7–9 mm;

staminal column hairy;

style 10–14-branched.

calyx dark-pigmented basally, unribbed, not angulate, 4–5 mm, minutely stellate-hairy, lobes wide-triangular;

petals white, 8–10 mm;

staminal column hairy;

style 8-branched.

subconic, 4–5 mm diam., glabrous;

mericarps 10–14, 3–4 mm, laterally reticulate, apex muticous to spined, sometimes 1-spined through failure of dehiscence, glabrous.

subconic, 6–8 mm diam., minutely stellate-hairy;

mericarps 8, not reticulate, apex beaked.

= 14, 28.

= 28.