Flora of North America species comparison

erect, unbranched below inflorescence, simple- and/or stellate-hairy.

stipules persistent, broadly lanceolate;

blade ± reniform to orbiculate, palmately lobed, base truncate to cordate, margins coarsely toothed.

terminal panicles, bracteate;

involucel absent.

unisexual, staminate and pistillate on different plants (plants dioecious);

calyx not accrescent, not inflated, lobes unribbed, triangular;

corolla white;

staminal column ± included;

style 6–10-branched;

stigmas introrsely decurrent, linear or filiform.

schizocarpic, erect, not inflated;

mericarps 6–10, reniform, 1-celled, apex apiculate (sometimes minutely so), indehiscent or tardily dehiscent.

1 per mericarp, glabrous.

= 15.