-(Convolvulaceae from the Microregion of Alto Capibaribe, Pernambuco State, Brazil). Convolvulaceae is a widely distributed family, most diverse in the Neotropics. 19 genera and 209 species occur in Northeastern Brazil, where this family has only recently been studied. The present study aims to increase the knowledge about Convolvulaceae in the region, focusing on the Microregion of Alto Capibaribe, Pernambuco State. Twenty species of the following genera are found in the area: Evolvulus (two species), Ipomoea (eight), Jacquemontia (five), Merremia (three), Operculina (one), and Turbina (one). Half of the species are new records to the area. Descriptions, taxonomic and distribution notes, illustrations, and a key for identification are presented. Keywords: Floristics, Ipomoea, taxonomy, vines RESUMO -(Convolvulaceae da Microrregião do Alto Capibaribe, PE, Brasil). Convolvulaceae apresenta distribuição cosmopolita com maior diversidade nos Neotrópicos. No Nordeste do Brasil, onde os estudos sobre a família são recentes, são encontrados 18 gêneros e 209 espécies. Sendo assim, este trabalho objetivou ampliar os estudos de Convolvulaceae na região, enfocando a microrregião do Alto Capibaribe em Pernambuco. A família é representada na área por 20 espécies incluídas nos gêneros Evolvulus (duas spp.), Ipomoea (oito spp.), Jacquemontia (cinco spp.), Merremia (três spp.), Operculina (uma sp.) e Turbina (uma sp.). Metade das espécies são novos registros para área. São apresentadas descrições, comentários taxonômicos e de distribuição, ilustrações e uma chave de identificação.

Resumo O presente trabalho é a primeira contribuição de uma série de estudos sobre a diversidade de Convolvulaceae em Pernambuco (PE). Aqui são tratadas as espécies dos gêneros Camonea (1 sp), Daustinia (1 sp), Distimake (7 spp) e Operculina (2 spp). Para isto, foram realizadas expedições de campo entre os anos de 2014 a 2018, além de consultas aos principais herbários da região. A ocorrência dessas espécies nos diferentes domínios fitogeográficos do estado é discutida. Distimake flagellaris e D. tomentosus se configuram como novos registros. São apresentadas chaves de identificação para os gêneros de Convolvulaceae ocorrentes em PE e de identificação para as espécies abordadas neste tratamento, além de descrições, comentários taxonômicos e de distribuição e ilustrações.

Superior/CAPES (finance code 001) to the first author, and financial support from Conselho Nacional de Desenvolvimento Científico e Tecnológico/CNPq (Project "História filogenética e fatores bióticos associados ao endemismo restrito em Angiospermas do Cerrado"/428673/2016-3) to the last author.

Cuscuta is a genus of Convolvulaceae distributed worldwide and comprises about 200 species, of which 26 were reported to Brazil. They are characterized by being holoparasites, leafless, gamopetalous, bisexual and usually pentamerous flowers. Studies available for South American Cuscuta are mostly from late XIX and early XX centuries. The restriction of taxonomic bibliographies, together with the fact that taxonomic informative characters are restricted to their tiny flowers, make the species identification a challenge. In this context, this work aimed to study the diversity of Cuscuta for the northeast region of Brazil and allow species identification. Field works were carried out in all northeast region states and about 150 specimens from 17 herbarium collections were analyzed. A lectotypification is proposed for C. racemosa. Cuscuta orbiculata, cited to Mexico, Guatemala and Brazil (Goiás and northeast region), is synonymized under C. tinctoria. Eight species were recognized, occurring mainly in areas of Caatinga, that predominates in the region. Descriptions, taxonomic comments, illustrations and an identification key are presented.

The genus Cuscuta L. (Convolvulaceae) are holoparasitic plants with cosmopolitan distributions, and they are usually difficult to identify. Based on several new field collections, we present three new floristic records from this genus in Central-West Brazil. Cuscuta platyloba Progel and Cuscuta partita Choisy are cited for the first time from Mato Grosso do Sul state, while Cuscuta xanthochortos var. carinata Mart., which was previously only known from southern Brazil, is also shown to be present in the Central-West region of the country. An identification key of Cuscuta species from Mato Grosso do Sul is also provided.

Abstract— A new species from the Atlantic Forest of northeastern Brazil, Jacquemontia atlantica, is described and illustrated. A distribution map, karyological characters, and an identification key for the species of that genus found in the Atlantic Forest are also provided, and its informal conservation status is assessed according to IUCN criteria. Its relationships with Jacquemontia glaucescens and other morphologically close species are discussed.