Abstract
Nomenclatural issues are still present in the American genus Spigelia due to the absence of recent taxonomic revisions. In this study, we propose eight lectotypes and one neotype for Central and South American species. The protologues of Spigelia ambigua, S. asperifolia, S. brachystachya, S. cascatensis and S. riedeliana have no indication of the holotype herbarium, thus requiring lectotypifications. Spigelia beyrichiana var. breviflora and S. herzogiana were based on syntype gatherings and also require lectotypification. Spigelia stenocardia had its holotype destroyed in Berlin in 1943 and a lectotype is indicated here. The location of the type collection of S. beyrichiana is still unknown, therefore a neotype is hereby indicated.
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