Based on a critical examination of type specimens, images of living plants, and the literature has shown Rhododendron oligocarpum to be conspecific with R. leishanicum . Although slight variations in corolla colour exist amongst different populations of R. oligocarpum , it does not serve as a key distinguishing trait. Therefore, we reduced R. oligocarpum to a synonym of R. leishanicum , and recommend placing it in Subsection Maculifera.
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Chen et al. (2024) studied this question.
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