https://fsus.ncbg.unc.edu/main.php?pg=show-taxon.php&&plantname=Asclepias+tuberosa&limit=1&offset=0&taxonid=67306
Asclepias tuberosa var. 1 [=terminalis] (Western Butterflyweed) - FSUS
asclepias tuberosavarwesternbutterflyweed
https://fsus.ncbg.unc.edu/main.php?pg=show-taxon.php&&plantname=Asclepias+tuberosa&limit=1&offset=1&taxonid=67307
Asclepias tuberosa var. 2 (Scrub Butterflyweed) - FSUS
asclepias tuberosavarscrubbutterflyweed
https://ask.ifas.ufl.edu/topics/butterflyweed
Ask IFAS: Topic - Butterflyweed
Details for the Ask IFAS Topic 'Butterflyweed', including related Topics, associated publications, and units it is associated with
askifastopicbutterflyweed
https://fsus.ncbg.unc.edu/main.php?pg=show-taxon.php&&plantname=Asclepias+tuberosa&limit=1&offset=3&taxonid=4888
Asclepias tuberosa var. rolfsii (Sandhill Butterflyweed) - FSUS
asclepias tuberosavarsandhillbutterflyweed