Flora of North America species comparison

erect, stellate-tomentose.

erect, sparsely stellate-hairy, hairs to 0.5 mm.

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

usually axillary solitary flowers.

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

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

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, 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.

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-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.

= 28.

= 14.