Talk:Heracleum sibiricum

Heracleum sibiricum in North America?
Some authorities claim that Heracleum sphondylium subsp. sibiricum (a synonym of Heracleum sibiricum) has been introduced in North America but botanists in New England have been unable to confirm this (see sources in the article). Plants in New England have white petals like subsp. sphondylium (not the yellowish-green petals of subsp. sibiricum) and more-or-less actinomorphic flowers throughout (like subsp. sibiricum). Consequently, regional flora list the taxon as Heracleum sphondylium with no subspecies designation, and most (if not all) herbarium specimens and photo observations of Heracleum sphondylium in New England lack a subspecies designation as well. If you have any information that will help resolve this issue, please post a comment here. Tom Scavo (talk) 13:28, 25 August 2023 (UTC)