Flora of North America species comparison

usually erect, hairy [glabrate], not viscid.

distalmost sometimes subsessile;

stipules usually persistent, filiform, subulate, or minute;

blade broadly ovate to ovate-triangular [narrowly triangular], unlobed, base cordate, margins entire [crenate-dentate], surfaces usually stellate-hairy [sometimes glabrate].

distalmost subsessile;

stipules filiform, 7–12 mm;

petiole 5–11 cm (reduced distally), subequal to blade in lower leaves, obscurely stellate-puberulent;

blade discolorous, broadly ovate, 5–11 cm (reduced distally), base deeply cordate (except distalmost), margins curved, apex acuminate.

terminal panicles or racemes;

involucel absent.

open panicles, essentially ebracteate.

1–4 cm.

calyx not accrescent, not inflated, shorter than mature fruits, lobes not ribbed, triangular;

corolla usually yellowish, sometimes white, rotate;

staminal column exserted;

style 3–6-branched;

stigmas capitate.

calyx 1 / 2 -divided, 3 mm;

petals yellowish, 5 mm.

schizocarps, erect, not inflated, obovoid, not indurate;

mericarps 3–6, 2-celled, apex bulbous-apiculate, proximal cell indehiscent, distal cell dehiscent.

(1–)3 per mericarp, lower cell 1-seeded, upper cell usually 2-seeded, hairy, proximal seed relatively more densely hairy.

2.5 mm, sparsely hairy.

usually unbranched below inflorescence, to 2 m. Stems slender, minutely puberulent (and with stipitate stellate hairs, especially at distal ends of petioles).

minutely puberulent;

mericarps 3–5, 6–7 mm.

= 7.

= 14.