From Buddle (“a surname”) + -ia, after English naturalist Adam Buddle. The spelling is as coined by Linnaeus, the "j" being an artefact of early modern orthography.
"buddleja." YourDictionary, n.d. Web. 22 June 2018. <http://www.yourdictionary.com/buddleja>.
buddleja. (n.d.). Retrieved June 22nd, 2018, from http://www.yourdictionary.com/buddleja
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