en.wikipedia.org
en.wikipedia.org
rhs.org.uk
plantnetwork.org
wildflowerweb.co.uk
Wild Flower Web
www.wildflowerweb.co.uk › plant › 2564 › fen-ragwort
inaturalist.org
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:246731-1
publications.naturalengland.org.uk
Natural England Access to Evidence
https://publications.naturalengland.org.uk › file › 95004
vfthomas.com
onlinelibrary.wiley.com
Wiley Online Library
https://onlinelibrary.wiley.com › doi › abs › 10.1111 › j.1355-4905.2006.00516.x
ukwildflowers.com
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