Flora of North America species comparison

prostrate, indument mixture of stellate and appressed, sublepidote hairs.

prostrate, with stellate and lepidote pubescence, not viscid.

petiole 1/2–1 times as long as blade;

blade ± reniform, 1–3.5 cm, wider than long, base obliquely truncate, margins serrate, apex obtuse or subacute, surfaces densely hairy, hairs appressed, sublepidote and stellate.

alternate and distichous;

stipules persistent, subulate, 3–5 mm;

blade asymmetric basally, [± flabellate], reniform, or ovate to triangular, not dissected or parted, base asymmetric, margins dentate, serrate, or entire, surfaces stellate or lepidote.

axillary solitary flowers;

involucel present or absent, bractlets 0–3, persistent or caducous, distinct.

long, subequal to subtending petiole;

involucellar bractlets 3, inconspicuous, filiform, or 0.

calyx 8–10 mm, with mixture of stellate and appressed sublepidote hairs, lobes ovate, bases not plicate-overlapping, apex acuminate;

petals pale yellow, sometimes with rose flush on fading, asymmetric, 12–15 mm;

stamens pallid, glabrous, staminal column antheriferous at apex;

style 7–10-branched, pallid, glabrous.

calyx not accrescent, not inflated, lobes unribbed, ovate or cordate, stellate or lepidote;

corolla whitish or pale yellow, sometimes with pink flush or fading pale rose;

staminal column included;

style 7–10-branched;

stigmas capitate.

schizocarps, erect, not inflated, oblate, not indurate, minutely hairy;

mericarps 7–10, 1-celled, dorsally rounded, essentially unornamented, lateral walls persistent, essentially indehiscent.

1 per mericarp, glabrous.

7 mm diam. 2n = 22, 32.

= probably 16.