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Synopsis of Convolvulaceae from the municipality of Cunha, Northeast Region of São Paulo, Brazil

A. Maruyama,André Luiz DA Costa Moreira,R. Simão‐Bianchini,Priscila Orlandini,F. Mazine,M. Pastore

Published 2025 in Hoehnea

ABSTRACT

ABSTRACT Convolvulaceae has a cosmopolitan distribution, with a predominance in tropical regions. The family comprises approximately 60 genera and 2,000 species, with 24 genera and 430 species recorded in Brazil. Most species are twining climbers, characterized by showy and ephemeral flowers. This study presents a taxonomic treatment of Convolvulaceae in the municipality of Cunha, São Paulo state, Brazil, based on the analysis of herbarium materials and extensive field collections in the region. An identification key, morphological diagnoses, distribution data, and taxonomic comments for each genus and species are provided, along with photographic plates and a map of the study area. Six genera and 23 species of Convolvulaceae were identified in this study. Ipomoea L. was the most diverse genus, with 15 species, followed by Jacquemontia Choisy with three species, Evolvulus L. with two species, and the genera Convolvulus L., Dichondra J.R. Forst. & G. Forst., and Distimake Raf., each represented by a single species. Ipomoea subincana (Choisy) Meisn. and Evolvulus saxifragus Mart. are newly recorded for the state of São Paulo, while 10 species are new records for the Alto Paraíba region. These findings highlight the presence of previously undocumented vegetation in the area, particularly in cerrado regions located outside conservation units, which urgently require protection.

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