Pieter Pelser devoted much research to find the nearest relatives of Jacobaea vulgaris and to provide a molecular phylogeny of the genus Senecio sensu lato (see Pelser et al. 2007). With the aid of nuclear and chloroplast DNA markers and AFLP’s a phylogeny was obtained from the “Jacobaea”clade. This clade contains 10 species that are most closely related to Jacobaea vulgaris (formerly Senecio jacobaea). The clade itself is clearly delimited and supported by molecular and morphological markers.


Phylogeny of Pelser et al 2003

Phylogeny based on AFLP and DNA data of the 10 species from the “Jacobaea” clade of the genus Senecio.

From  Pelser et al 2003.