Checklist of the genus <i>Dendrophorbium</i> (Senecioneae: Compositae) in Peru including a new combination and a new species

The genus Dendrophorbium occurs in South America with one species known from the Caribbean. Despite recent advances in taxonomy and phylogeny, there is a still lack of molecular studies on the delimitation and identification of the genus. Dendrophorbium is known to occupy a wide range of ecosystems mostly restricted to subtropical montane forests and montane scrub vegetation of the central Andes. In this study, a review of the species occurring in Peru is presented, in addition to material examined at different herbaria. The new combination D. ligulatum which is separated from D. yalusay , and the new species, D. arachnoideum is described from the department of Huánuco in central Peru. The species are assessed using the standards of the IUCN and additional notes are given.