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, 1-veined, linear, 7 mm, subequal to petiole;

petiole 3–10 mm, 1/5 times length of blade, densely stellate-hairy distally;

blade broadly elliptic to subrhombic, to 5.5 cm, 2–3.5 times longer than wide, smaller and narrower upward, base truncate to rounded, margins dentate almost to base, apex acute, surfaces evenly stellate-hairy, densely so abaxially.

axillary solitary flowers.

usually axillary solitary flowers.

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

slender, to 2 cm, usually 3+ times longer than calyx, 2 times as long as subtending petiole.

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

petals yellow, 7–9 mm;

staminal column hairy;

style 10–14-branched.

calyx ribbed, 6–7 mm, stellate-hairy, lobes triangular;

petals cream or pale yellow with reddish spot at base, 10 mm;

staminal column glabrous;

style 11-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.

oblate-conic, 5–6 mm diam., subglabrous apically;

mericarps 11, 4–5 mm, dorsal wall somewhat sunken, lateral walls smooth to obscurely reticulate, apex short-apiculate, with few antrorse hairs.

= 14, 28.

= 14.