Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 5-9) (4 photos). Also a page for 'Carillon'.
Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 5-8) (4 photos)
Virginia Tech Dendrology - Factsheet with botanical characteristics and photos of various features. (zone 5-8) (6 photos)
(7 photos).