Flora of North America species comparison

erect, stellate-tomentose.

erect, minutely and sparsely stellate-hairy.

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, 1-veined, linear, 4–8 mm, 1/2–1 times length of corresponding petiole;

petiole 6–17 mm, to 1/4 length of blade, obscurely hairy;

blade narrowly lanceolate or elliptic, 2.5–7 cm, 6–10 times longer than wide, base truncate, margins dentate to base, apex acute, surfaces obscurely hairy abaxially, glabrate adaxially.

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

axillary solitary flowers.

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

slender, 2–4(–6) cm, often equaling subtending leaf, much longer than 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, 7–10 mm, obscurely stellate-hairy, lobes triangular;

petals yellow, 12–17 mm;

staminal column sparsely hairy;

style 8–10-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, 8–9 mm diam., apically hairy;

mericarps 8–10, laterally reticulate, apex spined, spines 1 mm.

= 28.

= 28.