“…Taxonomic treatment of the subtribe Baccharidinae are available for species of a number of regions, e.g., Argentina (Cabrera 1963, Cabrera 1971, Espinar 1973, Cabrera 1974, Cabrera 1978, Giuliano 2000, Giuliano 2001, Bolivia (Müller 2006), Brazil (Barroso 1976, Oliveira & Marchiori 2006a, Oliveira & Marchiori 2006b, Oliveira-Deble 2008, Schneider 2009, Chile (Hellwig 1990), Colombia (Cuatrecasas 1967(Cuatrecasas , 1969, Uruguay (Arechavaleta 1908), Venezuela (Aristiguieta 1964), Central and North America (Nesom 1990a(Nesom , 1990b(Nesom , 1998. On the other hand, complete revision of the genera are reduced to few taxa, e.g., Baccharidastrum (Cabrera 1937), Pseudobaccharis (Cabrera 1944), Archibaccharis (Jackson 1975), Baccharidiopsis (Barroso 1975, Barroso 1976, Heterothalamus (Deble et aI.…”