Fernando Rivadavia

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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 ultrasmall(More)
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 phylogeny of(More)
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 spends its(More)
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(More)
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