Botanical novelties from the Serra do Divisor National Park in the extreme western Brazilian Amazon

ABSTRACT The Amazon is one of the most biodiverse regions on the planet; however, from a botanical perspective, it remains underexplored and understudied. Here, we report distributional novelties from a botanical expedition to the Serra do Divisor which include six new records for the Brazilian flora (Didymoglossum membranaceum, Miconia urticilamina, Pleroma ochypetalum, Piper lagenaebaccum, Piper svenningii and Sanchezia tigrina), and six new records for the State of Acre (Callea montana, Guzmania brasiliensis, Paphinia cristata, Peperomia emarginella, Tovomita maxima, and Uleiorchis ulei), providing images and commentaries for each species. Most of the species are broadly distributed across western Amazonia, but with no previous records in Brazil so far. These new records highlight the relevance and necessity for botanical expeditions to remote areas in the Brazilian Amazon.