In this study, we present the species of the genus Gynoxys recorded in the department of Amazonas, Peru. From March 2021 to October 2023, a review of exsiccata preserved in national herbaria, virtual databases of international herbaria, and field collections in different localities was carried out. We report 22 species of Gynoxys in Amazonas, of which two are new records for Peru and six are first reports for Amazonas. The genus is mainly distributed in the southern part of the department, inhabiting mainly moorlands and high altimontane forests of the Yungas, mostly located above 2900 meters above sea level (m a.s.l).

The study used species distribution models (MaxEnt) to analyze the ecological suitability of the genus Gynoxys in Peru. Bioclimatic, edaphic and topographic variables were integrated to predict areas with high development potential. Potential distribution maps were generated, and model validation showed outstanding performance (AUC > 0.9). The results indicated that variables such as minimum temperature in the warmest season and soil moisture are determinants in the distribution of the Discoide, Gynoxys and Praegynoxys clades. It is concluded that the conservation of the genus requires protection strategies to ensure the sustainability of these montane ecosystems.

Eficiencia del Jacinto de agua (Eichhornia crassipes) y lentejas de agua (Lemma minor) en el tratamiento de las aguas residuales de la Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas - 2015.

In this study, we present the species of the genus Gynoxys recorded in the department of Amazonas, Peru. From March 2021 to October 2023, a review of exsiccata preserved in national herbaria, virtual databases of international herbaria, and field collections in different localities was carried out. We report 22 species of Gynoxys in Amazonas, of which two are new records for Peru and six are first reports for Amazonas. The genus is mainly distributed in the southern part of the department, inhabiting mainly moorlands and high altimontane forests of the Yungas, mostly located above 2900 meters above sea level (m a.s.l).