Lectotypification of the basionym of Isodon kurzii and Isodon nilgherricus

Abstract

Isodon (Schrad. ex Bentham 1832: 40) Spach (1840: 162), belonging to the family Lamiaceae, comprises about 100 species (Chen et al. 2016). Formerly, the species of this genus were included in the genus Plectranthus L’Héritier (1788: 84). In this article, we are designating the lectotype for Plectranthus kurzii Prain (1890: 296) and Plectranthus nilgherricus Bentham (1848: 57), basionyms of Isodon kurzii (Prain) Hara (1985: 234) and Isodon nilgherricus (Benth.) Hara (1985: 236), respectively. The lectotypification of Plectranthus nilgherricus is a second-step lectotypification as per Art. 9. 17 of the ICN (Turland et al. 2018).