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A nomenclatural study of Plumeria (Apocynaceae: Plumerieae) in the Caribbean Islands

Abstract:

An update of the nomenclature of 49 Caribbean Island-occurring taxa of Plumeria (Apocynaceae: Plumerieae) is presented. We designate lectotypes for the following 29 names: Plumeria alba var. jacquiniana, P. apiculata, P. barahonensis, P. beatensis, P. berteroi, P. biglandulosa, P. confusa, P. cuneifolia, P. dictyophylla, P. discolor, P. domingensis, P. gibbosa, P. inaguensis, P. jaegeri, P. jamaicensis, P. krugii, P. leuconeura, P. longiflora, P. marchii, P. obtusa var. laevis, P. obtusa var. parviflora, P. ostenfeldii, P. paulinae, P. pilosula, P. revolutifolia, P. stenopetala, P. stenopetala var. angustissima, P. subsessilis, and P. trouinensis. A neotype is assigned to P. bahamensis, and epitypes are presented for P. alba var. jacquiniana, P. gibbosa and P. stenopetala. Plumeria portoricensis is regarded as an uncertain name. Fifteen of the Cuban endemics were inadvertently lectotypified; three of them (P. cayensis, P. cubensis, P. stenophylla) require a two-step lectotypification, which is presented here. Two of the names (P. filifolia, P. tuberculata) were lectotypified in previous works and we concord with these typifications. The protologue of P. magna includes the holotype for this name.