Small collections, great findings: three new species and two new state records for Asteraceae from Brazil

The BHZB herbarium was founded in 1993 with about 16 787 registers – a number that has to be considered as small when compared to larger herbaria in Brazil. In the BHZB, 97.5% of the vouchers are from the Minas Gerais state (ca 16 372 specimens), with Asteraceae being the best represented family. Studying this collection, we found three new species from Minas Gerais: Calea aggregata, Wedelia cangae , and Wedelia santosiae which are here described and illustrated, and their conservation status and taxonomic affinities are discussed. In addition, we provide a map with the information about the new species. We also found some new records that was misidentified. The occurrence of Praxelis sanctopaulensis (B.L.Rob.) R.M.King and H.Rob. in Minas Gerais and of Mikania stipulacea Willd. in the Espírito Santo state are documented and mapped.