Flora of North America species comparison

erect, stellate-tomentose.

erect, minutely stellate-hairy to glabrescent.

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 pedicel, filiform to linear, often curved or twisted, 4–9 mm, subequal to corresponding petiole;

petiole 4–7 mm, ca. 1/10 length of blade, sparsely stellate-hairy;

blade lanceolate-elliptic to subrhombic, 5–9 cm, 4–7 times longer than wide, base cuneate, margins crenulate-serrate to base, apex acute, surfaces sparsely stellate-hairy abaxially, glabrescent adaxially.

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

axillary solitary flowers, often congested apically.

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

unarticulated, 0.5–1 cm, shorter than subtending leaf, shorter than or subequal to calyx.

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, 7–9 mm, glabrous, lobes trullate;

petals yellow, 15 mm;

staminal column hairy;

style 9–12-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).

oblate, 6–7 mm diam., apically hairy;

mericarps 9–12, 5 mm, laterally reticulate, apex spined, spines 1.5–2 mm.

= 28.