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Similar Rhododendron catawbiense, Rhododendron degronianum subsp ya, Rhododendron Knap Hill Hybrid Gr, Rhododendron impeditum, Rhododendron luteum | ||
A catawbiense hybrid is a hybrid of the plant genus Rhododendron, derived from crosses of American species Rhododendron catawbiense and Rhododendron maximum with European and Asian species R. arboreum, R. caucaseum and R. ponticum.
References
Catawbiense hybrid Wikipedia(Text) CC BY-SA