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The genus Lysimachia (Primulaceae) is taxonomically complex, particularly within sect. Spicatae in East Asia. Field surveys in the Republic of Korea revealed a taxon exhibiting intermediate morphological states between L. barystachys and L. fortunei , including variation in leaf length-to-width ratio, raceme architecture, and floral density at the apex. Principal component analysis (PCA) of morphological traits positioned the putative hybrid between the parental taxa, forming a distinguishable cluster despite partial overlap. Phylogenetic analyses based on nrITS and plastome data revealed cytonuclear discordance, consistent with a hybrid origin. Integrating morphological and molecular evidence, this taxon is described as a new wild nothospecies, Lysimachia × glabrophora.
Park et al. (Tue,) studied this question.