Flora of North America species comparison

erect, stellate-tomentose.

erect, with simple 1–2 mm hairs, sometimes also minutely 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.

distichous;

stipules free from petiole, subfalcate, 4–10 × 0.5–1 mm or less, often exceeding petiole, margins ciliate;

petiole 5–6 mm, 1/15–1/5 blade length, hirsute;

blade elliptic-lanceolate, 2.5–9 × 1–4 cm, 2 times longer than wide, base rounded, margins short-serrate at least distally, entire basally, apex acute, surfaces glabrous or with minute scattered stellate hairs and simple appressed antrorse hairs.

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

axillary congested glomerules, sometimes solitary or paired flowers.

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

0.3–0.5 cm, subequal to or shorter than subtending petiole, shorter than to 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, 5–6 mm, often ciliate, with scattered minute stellate hairs, lobes triangular;

petals yellow, 8–10 mm;

staminal column glabrous;

style 7- or 8-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., glabrous or axially minutely puberulent;

mericarps 7 or 8, 3 mm, smooth dorsally, laterally somewhat reticulate, apex spined, spines 2 mm, apically minutely puberulent.

= 28.

= 28.