This work presents a new circumscription and a taxonomic treatment for Chamaecrista ser. Setosae that resulted from previous phylogenetic studies and the analysis of ca. 350 collections, including typus, as well as the observation of populations in field. Nine species were recognized for the series, eight of which are endemic to Brazil, and one firstly recorded for the country (Ch. orenocensis). Are proposed the synonymizations of all varieties of Ch. setosa, the transfer of Ch. amphibola from the Setosae series to the ser. Ursinae and its consequent synonymization under Ch. exsudans, and the inclusion of Ch. multiseta from the Absoideae series to the ser. Setosae based on previous phylogenetic and morphological evidences. Species are contrasted in a key, with their updated typifications, represented through images and described and commented on their flowering and fruiting periods, their geographical distributions, including, maps, preferred environments and conservation status, morphological relationships, as well as illustrated by their diagnostic characters.
The present paper aimed to evaluate the landscape dynamics of the city of Cajuri, Minas Gerais, Brazil. For this, a digital image of the Sentinel-2A satellite, dated June 2020, was classified to map the current land use in the municipality and the areas of pasture, native forest, annual and perennial crops, coffee and urban extension were quantified. The data collected were compared with historical records made available by public sectors for the analysis of the dynamics of land use. Pastures (35.24%) and native forests (28.74%) occupy 63.98% of the territory of Cajuri. Part of the agricultural activities are in the environmental areas and require attention for the sustainability of the practices. Except for the urban area, all classes mapped have increased their occupation areas recently and in succession mainly to the citrus areas. The information presented can be used to assist in decision making, planning and strategic studies in the city.
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