Cassia Sakuragui

Federal University of Rio de Janeiro | UFRJ · Departamento de Botânica

The Atlantic Forest stores vast amounts of aboveground biomass (AGB), yet it is still a challenge to estimate these stocks. We aimed to predict the AGB stock of the largest biodiversity remnant of Serra da Tiririca State Park (Rio de Janeiro, Brazil) by comparing the accuracy of generalized linear models (GLM) and random forest (RF) models, using d...

Catálogo de Plantas das Unidades de Conservação do Brasil: listas de espécies dos Parques Nacionais do Descobrimento, Histórico do Monte Pascoal e Pau Brasil, Bahia, Brasil. Poster presented at the 74th National Congress of Botany in Brasília, Brazil.

The coastal remnants of the Atlantic Forest are important sources of plant biodiversity and are a significant part of this endangered biome. Despite this, in some areas the flora is still little known, such as the Serra da Tiririca State Park (PESET), Rio de Janeiro, Brazil. Here we used information from scientific studies and data from the REFLORA...

Este artigo aborda a gestão sustentável de espécies ornamentais ameaçadas no Brasil. Ele destaca o marco legal que permite a colheita de frutos e sementes de florestas naturais, com regulamentações para proteger as espécies. No Espírito Santo, os planos de exploração sustentável incluem ações de compensação para palmeiras ameaçadas. O comércio orna...

The current study aims to contribute to the knowledge the genus Protium occurring in the state of Rio de Janeiro. Collections deposited in national herbaria were examined and field collections were carried out, in addition to research in specialized literature and consultations in online international herbaria. Seven species were cataloged for the...

Apresentamos um artigo de opinião contextualizando a atual situação de Philodendron spiritus-sancti, uma espécie de Araceae emblemática e ameaçada de extinção, endêmica do estado do Espírito Santo e altamente visada no comércio de plantas ornamentais. Discutimos como o distanciamento entre pesquisadores e a sociedade civil dificulta a aquisição de...

O Parque Nacional do Descobrimento (PND) é uma Unidade de Conservação de Proteção Integral localizada no município de Prado, extremo sul da Bahia. Foi criado por Decreto Presidencial em 20 de abril de 1999 e ampliado em 5 de junho de 2012. Abrange uma área de 22.607,74 hectares entre as coordenadas 16º55’ e 17º15’ de latitude Sul; e 39º25’ e 40º10’...

O Parque Nacional Histórico do Monte Pascoal (PNHMP) é uma Unidade de Conservação de Proteção Integral criada pelo Decreto nº 242/1961 e renomeado pelo Decreto nº 3.421/2000. Está localizado no extremo sul da Bahia, no município de Porto Seguro, com área de 22.240,67 hectares entre as coordenadas 16°45’N e 16°55’S, e 39°08’L e 39°30’O. O PNHMP poss...

O Parque Nacional do Pau Brasil (PNPB) é uma Unidade de Conservação de Proteção Integral criada por Decreto Presidencial em 20 de abril de 1999 e ampliado em 11 de junho de 2010. Por meio da demarcação, realizada em 2013, foram feitos ajustes em sua área, que atualmente possui 19.027,2218 hectares, entre as coordenadas 24’N e 16°35’S, e 39°07’L e 3...

The Atlantic Forest is one of the richest and most threatened biomes in Brazil. However, the structure and floristic composition of many of its remnants are still unknown. This study assessed the structure and tree composition of the Serra da Tiririca – SET coastal remnant, is the largest remnant in Serra da Tiririca State Park – PESET (Atlantic Fo...

A Reserva Biológica do Tinguá é uma Unidade de Conservação de Proteção Integral localizada em seis municípios: Nova Iguaçu, Duque de Caxias, Petrópolis, Miguel Pereira, Queimados e Japeri. Encontra-se situada no limite entre a Serra do Mar e a Baixada Fluminense entre as coordenadas geográficas 22°22'20", 22°45'00" S; 43°05'40", 43°40'00" W. Está i...

Utricularia breviscapa C.Wright ex Griseb. belongs to the Lentibulariaceae, a family of carnivorous plants with many aquatic species. We report a new record of U. breviscapa in a perennial wetland along the São João River, in a Low-land Forest within the Atlantic Forest biome. This is the first record of this species from the state of Rio de Janeir...

Morphoanatomical features can provide useful information for plant taxonomy. In Oxalis sect. Polymorphae (Oxalidaceae) there are currently 12 accepted species, mostly from the Brazilian Atlantic Forest, but the historical recognition of some infraspecific taxa may have resulted in underscored species richness. Integrated analyses of additional type...

The Central Mountain Region of Espírito Santo state is located in the Atlantic Forest domain in eastern Brazil, which is the third largest center of diversity and endemism for Cactaceae. The state has 42 native species and 13 genera of this family. The aim of this study was to conduct a floristic-taxonomic study of Cactaceae in the Central Mountain...

Taxonomic treatment of Ranunculaceae Juss. in Brazil.

Most plant descriptions focus on differences in reproductive structures, but some lineages, including the genus Anthurium Schott (Araceae), have the vegetative characters as the main source of relevant taxonomic variability. Several herbarium specimens of Anthurium have inaccurate determinations due to the great leaf-blade plasticity conflicting wi...

Rhipsalis Gaertner (1788: 138) belongs to Cactaceae Juss., which is among the major taxonomic groups including the highest numbers of threatened species in the world (Goettsch et al. 2015). The center of diversity and endemism of this genus is in the Atlantic Forest in Brazil, a world hotspot of biodiversity (Myers et al. 2000). This forests harbor...

The infraspecific taxon Anthurium willdenowii Kunth var. pohlii Engl. is elevated to the rank of species and is given the new name Anthurium maxakali Theófilo, Sakur. & Mayo. Comments about its taxonomy, ecology, and geographic distribution are discussed.

Oxalis cipoensis, nom. nov. (Oxalidaceae) is herein published as a replacement name for the illegitimate name Oxalis calcicola from Brazil, which is a later homonym of Oxalis calcicola from Guatemala.

Medicalization of common names of medicinal plants is a process that involves replacing popular native names by trademarked names of drugs, active principles or therapeutic indications used by modern biomedicine. In Brazil, this process seems to have been intensified in the early 2000s due to the increasing use of those names in ethnoscientific sur...

During a floristic survey of Araceae in the Atlantic Forest of Espírito Santo State, southeastern Brazil, we found an intriguing, unknown species of Anthurium Schott with cordate leaves. Here, we describe and illustrate the new species, A. sagrilloanum Theófilo & T. F. Sagrillo, and also provide comments on its ecology and distribution.

The genus Philodendron Schott comprises the following three currently accepted subgenenera: P. subg. Philodendron, P. subg. Pteromischum and P. subg. Meconostigma; however, these lack a well-defined classification. In the present study, we examined anatomically samples of adventitious roots in species of the group, so as to establish aspects releva...

The genus Philodendron Schott comprises the following three currently accepted subgenenera: P. subg. Philodendron, P. subg. Pteromischum and P. subg. Meconostigma; however, these lack a well-defined classification. In the present study, we examined anatomically samples of adventitious roots in species of the group, so as to establish aspects releva...

Flowers of Cactaceae have a peculiar structure. As in all Angiosperms, their flowers are modified shoots, but in this family the shoot is more complex: it is externally covered by stem tissue. The cactus flowers show a wide variety of forms, sizes and structural characters related to the evolutionary history of their lineages. This richness in morp...

This paper presents and discusses nomen-clatural novelties concerning names of Atlantic Forest species of Anthurium Schott sect. Urospadix Engl. in subsection Obscureviridia Engl. Nine lectotypifications, four neotypifications, one correction of authorship, and one clarification of a type are presented and discussed, and four designations are noted...

This paper addresses typification of species and infraspecific taxa in the genus Urospatha Schott. Thirteen lectotypifications, one neotypification, and corrections for two type localities are presented and discussed. Additionally, U. friedrichsthaliana Schott (a probable synonym of Sagittaria latifolia Willd.) is lectotypified.

During a floristic survey of Araceae species in the Atlantic Forest, Espírito Santo State, southeastern Brazil, we found an unknown species of Anthurium Schott with cordate leaf bases. Here, we describe and illustrate this new species, A. marcusianum Theófilo, L. Kollmann & Sakur., and also provide comments on its ecology, distribution, and conserv...

Lippia origanoides (Kunth), also known as salva-de-marajó, is an aromatic shrub distributed from central America to northern South America that presents biomedical potential. Here we sequenced a partial genome dataset for salva-de-marajó using 1/11th of a lane on Illumina Hiseq. The software MIRA was used to assemble the complete plastid using diff...

Resumo O presente estudo tem como objetivo contribuir com o conhecimento das espécies de Oxalidaceae ocorrentes no estado do Rio de Janeiro. Foram analisadas coleções depositadas em herbários e feitas coletas a campo, além de consultados dados de literatura e amostras online de herbários internacionais. Foram registrados dois gêneros: Biophytum (um...

Premise of research. Philodendron subg. Pteromischum has different floral traits and smaller inflorescence size than other species from the Philodendron lineage (genus Thaumatophyllum and P. subgenus Philodendron). We examined the flowering cycle, thermogenesis, and effective pollinators of Philodendron propinquum (P. subgenus Pteromischum) and com...

Philodendron subgenus Meconostigma has been a well-circumscribed group since 1829. Members of this group are easily distinguished by diagnostic morphological characters as well as by a distinct ecology and geographical distribution. Based on molecular, morphological and cytological evidence, we propose the recognition of P. subg. Meconostigma as a...

Taxon sampling, voucher information and GenBank

Philodendron (Araceae) is one of the largest Neotropical plant genera, with approximately 500 species and at least 1000 species predicted. There is a considerable ecological diversity in the group, although most species occur in the humid forests of tropical America. Despite being relatively well-studied in taxonomic analyses, the relationships amo...

Basellaceae é uma pequena família de Eudicotiledôneas, composta por quatro gêneros e ca. 20 espécies. No Brasil e no estado do Espírito Santo, é encontrado apenas o gênero Anredera, representado por duas espécies: A. cordifolia e A. tucumanensis. Nós apresentamos descrições, comentários, mapa de distribuição, e ilustrações para todas as espécies. P...

This corrects the article DOI: 10.1038/nature24639.

Wetlands are the largest global source of atmospheric methane (CH4)1, a potent greenhouse gas. However, methane emission inventories from the Amazon floodplain2,3, the largest natural geographic source of CH4 in the tropics, consistently underestimate the atmospheric burden of CH4 determined via remote sensing and inversion modelling4,5, pointing t...

Philodendron flowers are numerous, small, unisexual or sterile, without perianth and exclusively pollinated by beetles, representing an Angiosperm-ancient pollination syndrome. Species of the genus are traditionally classified under three subgenera, P. subgenus Philodendron, P. subgenus Meconostigma, and P. subgenus Pteromischum. In recent phylogen...

ABSTRACT This study surveyed species of the family Araceae in Grumari restinga, located in the metropolitan region of the city of Rio de Janeiro, Brazil. We aimed to: i) evaluate the contribution of a single locality (Grumari restinga) to regional conservation (Rio de Janeiro State) of Araceae; and ii) compare the distribution of species of Araceae...

We present a new record to the Brazilian territory (i.e. Tradescantia boliviana), the rediscovery of a species exclusively known from the cultivated type collection (i.e. T. valida), the description of a new taxon (i.e. T. chrysophylla), synonyms for T. crassula and T. boliviana, correct the typification of T. crassula, and designation of a lectoty...

In the last three decades, several vernacular names of medicinal plants related tomanufactured drugs names have been recognized in ethnobotanical surveys throughoutBrazil. The medicalization may be the primarily responsible process for the rise of thattype of vernacular names of Brazilian medicinal plants differentially for each geopoliticalregion...

In order to understand the taxonomy of the enigmatic Tradescantia cymbispatha — the source of the confusion between T. sect. Austrotradescantia and T. sect. Cymbispatha — we reexamined the protologues of T. geniculata Vell., T. mundula var. scabrida, T. cymbispatha, T. cymbispatha var. villosissima, T. cerinthoides, T. koernickeana, and T. umbracul...

O objetivo deste trabalho é discutir os conteúdos abordados no primeiro ano do Ensino Médio e temas transversais, no contexto da estrutura curricular do Curso de Licenciatura em Ciências Biológicas da Universidade Federal do Rio de Janeiro (UFRJ), e como o Programa Institucional de Bolsa de Iniciação à Docência (Pibid) se constitui numa proposta re...

This work presents the flora of the genus Philodendron (Araceae) in the Paraná state, Brazil. Thirteen species were recorded, two of which are new: P. appendiculatum, P. bipinnatifidum, P. camposportoanum, P. corcovadense, P. crassinervium, P. eximium, P. loefgrenii, P. meridionale, P. missionum, P. obliquifolium, P. propinquum, P. rheophyticum and...

Philodendron is the second most diverse genus of the Araceae, a tropical monocot family with significant morphological diversity along its wide geographic distribution in the Neotropics. Although evolutionary studies of Philodendron were conducted in recent years, the phylogenetic relationship among its species remains unclear. Additionally, analys...

Supplementary tables and figures

Philodendron is the second most diverse genus of the Araceae, a tropical monocot family with significant morphological diversity along its wide geographic distribution in the Neotropics. Although evolutionary studies of Philodendron were conducted in recent years, the phylogenetic relationship among its species remains unclear. Additionally, analys...

Philodendron is the second most diverse genus of the Araceae, a tropical monocot family with significant morphological diversity along its wide geographic distribution in the Neotropics. Although evolutionary studies of Philodendron were conducted in recent years, the phylogenetic relationship among its species remains unclear. Additionally, analys...

RESUMO: (A Família Araceae Juss. nas restingas do Estado do Espírito Santo) Apresentamos o levantamento das espécies de Araceae ao longo das restingas do estado do Espírito Santo, um ecossistema do Domínio Atlântico. Os objetivos do trabalho incluíram realizar o tratamento taxonômico da fa-mília e verificar como as espécies se distribuem ao longo d...