Flora of North America species comparison

prostrate, with stellate and lepidote pubescence, not viscid.

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.

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.

= probably 16.