INTRODUCTION Baccharis L. (Asteraceae, Astereae, Baccharidinae) is one of the largest genera within the tribe Astereae, with about 354 (Müller 2013) to 500 (Malagarriga-Heras 1977) species. In Chile 16 species occur (Hellwig 1990). Furthermore, 21 hybrids of the above-mentioned 16 parental species have been described based on morphology in the same geographic area. Baccharis is a genus that is native to the majority of Chilean territory. However, it is absent between 18° and 28°30′ S.
