Buddleia davidii - Description and images. - http://www.hort.uconn.edu/plants/b/buddav/buddav1.html
Buddleja saligna - Description and images of the southern African False Olive. - http://www.plantzafrica.com/plantab/buddlesalig.htm
Buddleja madagascariensis - Description, images, and invasiveness of this Madagascar native. - http://www.hear.org/pier/species/buddleja_madagascariensis.htm
Buddleja davidii - Description, image, and invasiveness. - http://www.hear.org/pier/species/buddleja_davidii.htm
Buddleia: Butterfly Bush Extraordinaire - Article about various species useful for attacting wildlife (genus misspelled). - http://butterflygardeners.com/buddleia.htm