Flora of North America species comparison

erect, stellate-tomentose.

erect, subglabrous.

stipules free from petiole, 1-veined, linear, 5–8 mm, shorter than petiole;

petiole 10–25 mm, to 1/2 length of blade, stellate-tomentose;

blade broadly cordate to ovate-lanceolate, to 6 cm, reduced distally, 1–2 times longer than wide, base cordate, margins dentate to base, apex acute, surfaces softly velvety-tomentose.

stipules free from petiole, linear, 6–11 mm, 2 times length of corresponding petiole;

petiole 3–7 mm, 1/10 length of blade, subglabrous;

blade lanceolate-elliptic to subrhombic, 3–9 cm, 2.5–5 times longer than wide, base truncate, margins crenate or serrate to base, apex usually acute, surfaces glabrous.

axillary, usually subsessile, crowded panicles or corymbs, sometimes solitary flowers.

axillary solitary or paired flowers.

0.2–0.4 cm, enlarging slightly in fruit, shorter than calyx.

articulated, 0.5–2(–3) cm, usually 2–3 times calyx length, 1/4–1/2 length of subtending leaf.

calyx prominently ribbed, 6–7 mm, densely stellate-tomentose, lobes ovate;

petals yellow-orange, often with darker reddish base, 8–11 mm;

staminal column hairy;

style 8–14-branched.

calyx ribbed, 7–10 mm, glabrous, lobes ovate;

petals yellow, 15 mm;

staminal column hairy;

style 10–12-branched.

oblate-conic, 6–7 mm diam., apically hairy;

mericarps 8–14, 4–5 mm, dorsally smooth, apex spined, spines to 2 mm, retrorsely barbed (variably developed, rarely suppressed).

subconic, 6–7 mm diam., minutely hairy apically;

mericarps 10–12, 5 mm, laterally reticulate, apex spined, spines 1.5 mm.

= 28.