Fernando Rivadavia

• University of São Paulo

A synopsis of the Drosera (Droseraceae) species occurring in Brazil is here presented, providing tools for taxonomic identification and summarizing data as a basis for future studies on diversity and conservation of the genus in the country. Thirty-three taxa, comprising 32 species and a nothotaxon, are recognized for the Brazilian territory. We pr...

The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...

The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...

The urge to organise the world around us is an essential part of human nature. Naming and categorising enable us to store and access information ef ciently. The need to name and categorise extends to the natural world and, in particular, to living organisms. The science underpinning this area of knowledge is called Taxonomy, and is as old as humani...

The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is well understood, s...

Pinguicula pygmaea (Lentibulariaceae), a new species from the Sierra Madre del Sur of western Oaxaca, Mexico is described and illustrated. The morphological characteristics distinguishing this new species from other similar species are discussed, together with its distribution and ecology.

The Drosera species endemic to the central and northern Andes are revised here, including three species: the Venezuelan D. cendeensis as well as D. peruensis and D. condor sp. nov., from Peru and Ecuador. The latter is a new species endemic to the Cordillera del Cóndor that is here described and illustrated for the first time. The similarities and...

A new interaction between insects and carnivorous plants is reported from Brazil. Larvae of the predatory flower fly Toxomerus basalis (Diptera: Syrphidae: Syrphinae) have been found scavenging on the sticky leaves of several carnivorous sundew species (Drosera, Droseraceae) in Minas Gerais and São Paulo states, SE Brazil. This syrphid apparently s...

An updated inventory of Brazilian seed plants is presented and offers important insights into the country’s biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, sh...

Drosera magnifica, a microendemic sundew discovered on a single mountain top in eastern Minas Gerais (southeastern Brazil), is described here as a new species for science. Regarded as the largest New World sundew and one of the three larg- est Drosera species, it was just recently discovered through photographs posted on the social network Facebook...

2): 61-68. 2014. 61 Arthropods associated with the carnivorous plant Drosera latifolia (Droseraceae) in an area of Atlantic Forest (southeastern Brazil) Artrópodes associados à planta carnívora Drosera latifolia (Droseraceae) em uma área de Floresta Atlântica (sudeste do Brasil) JANE COSTA 1 CLAUDIA LEAL RODRIGUES 1 ARLINDO SERPA FILHO 2 SANDOR CHR...

Background and Aims Some species of Genlisea possess ultrasmall nuclear genomes, the smallest known among angiosperms, and some have been found to have chromosomes of diminutive size, which may explain why chromosome numbers and karyotypes are not known for the majority of species of the genus. However, other members of the genus do not possess ult...

The species of the affinity of Drosera montana (Droseraceae) are reviewed taxonomically and the complex is redefined to include only D. montana, D. tentaculata, D. tomentosa var. tomentosa, D. tomentosa var. glabrata, and D. spirocalyx. The latter is a newly described narrow endemic species from the Serra do Cipó in central Minas Gerais state, Braz...

The Drosera villosa complex is here reviewed and includes six species endemic to Brazil: D. villosa, here identified for the first time as a narrow endemic species native to the neighboring highlands of the Serra Negra and Serra do Ibitipoca, in southern Minas Gerais state; D. ascendens, rediscovered nearly 200 years after its description, narrowly...

Abstract— A new species, Genlisea tuberosa , is described from the Campos Rupestres of central and eastern Brazil. A detailed description, line drawings, photographs and SEM photomicrographs of the seeds are provided for the new species, together with remarks on ecology, distribution and habitat. The characters distinguishing G. tuberosa from simi...

Drosera graminifolia and D. spiralis have long been considered conspecific, but new morphological and ecological data support the recognition of these taxa as distinct species. Both species are here described and illustrated, including observations on ecology, habitat, and conservation status, together with a distribution map, line drawings, photog...

South America and Oceania possess numerous floristic similarities, often confirmed by morphological and molecular data. The carnivorous Drosera meristocaulis (Droseraceae), endemic to the Neblina highlands of northern South America, was known to share morphological characters with the pygmy sundews of Drosera sect. Bryastrum, which are endemic to A...

The Serra de São José is a mountain range within Cerrado (Brazilian savanna) biome, situated in the south of Minas Gerais state, Brazil. The predominant vegetation of the study area is campo rupestre (Brazilian rocky savanna). The latter formation, better known from the Espinhaço Chain, is the scene of many speciation events and comprises several r...

Five new species of Genlisea are described from Brazil, and all eight species of Genlisea subgenus Tayloria are described and illustrated, including remarks on ecology, biogeography, and habitat. Distribution maps, line drawings, photographs of the corolla, and SEM microphotographs of the seeds are presented for all species, and an identification k...

Drosera quartzicola (Droseraceae), a new species from the Serra do Cipó highlands, Minas Gerais state, southeastern Brazil, is described here. The morphological characters that distinguish it from similar Drosera species are discussed, together with habitat information, detailed illustrations, and its conservation status. A key to the Drosera speci...

The carnivorous plant genus Genlisea A. St.-Hil. (Lentibulariaceae) comprises at least 22 species distributed in South and Central America as well as in Africa (including Madagascar). It has only recently been shown to be a true carnivore, specialized in protozoa and other small soil organisms. Here we present a statistically highly supported phylo...

Summary Utricularia rostrata A. Fleischm. & Rivadavia (Lentibulariaceae) is described from the Chapada Diamantina highlands in Bahia state, north-eastern Brazil. The morphological characteristics which distinguish this new species are discussed, together with its distribution and ecology.

Drosera amazonica Rivadavia, A. Fleischm. & Vicent. (Droseraceae) is described from the northern Amazon Basin in northeastern Amazonas State and central Roraima State, Brazil. The morphological characteristics which distinguish this new species are discussed, together with its distribution and ecology. Hydrochory is assumed for this new species, wh...

DROSERA ERICGREENII. A NEW SPECIES FROM THE FYNBOS OF SOUTH AFRICA

MicroRNAs (miRNAs) are a class of small endogenous RNAs that play important regulatory roles by targeting mRNAs for cleavage or translational repression. miRNAs act in diverse biological processes including development, cell growth, apoptosis, and hematopoiesis, suggesting their association with cancer. We determined the miRNA expression profile of...

MicroRNAs (miRNAs) are a class of small endogenous RNAs that play important regulatory roles by targeting mRNAs for cleavage or translational repression. miRNAs act in diverse biological processes including development, cell growth, apoptosis, and hematopoiesis, suggesting their association with cancer. We determined the miRNA expression profile of...

Four new species are described from Brazil for the sundew genus Drosera (Droseraceae): Drosera tentaculata F.Rivadavia spec. nov., D. grantsaui F.Rivadavia spec. nov., D. camporupestris F.Rivadavia spec. nov., and D. viridis F.Rivadavia spec. nov. The morphological characters distinguishing these from other similar or related tax are discussed toge...

The sundew genus Drosera consists of carnivorous plants with active flypaper traps and includes nearly 150 species distributed mainly in Australia, Africa, and South America, with some Northern Hemisphere species. In addition to confused intrageneric classification of Drosera, the intergeneric relationships among the Drosera and two other genera in...