Abstract We present a taxonomic treatment for the species of Didymochlaenaceae and Dryopteridaceae occurring in region Viçosa, Minas Gerais, Brazil. This study was based on 50 herbarium gatherings from IAN, K, NY, PACA, RB, SP, UPCB, US, VIC. is represented by single species, Didymochlaena truncatula, whereas has 11 infrageneric taxa seven genera: Ctenitis (four taxa, including two varieties), ...

Japanese Anthocorini are reviewed. A total of five genera and 13 species were identified, including two new described below: Temnostethus mirificus sp. nov. Anthocoris venustus Previous records miyamotoi Hiura, 1959 from Japan considered to be confused with A. nemoralis (Fabricius, 1794), which is a common widespread in Europe, recorded for the first time; it assumed have been accidentally intr...

the use of plants to remediate contaminated soil has been the most rapidly developing component in environmental cleansing. although total concentration of heavy metals in soil is used for regulatory review, it also is beneficial to assess the potential for ecosystem impact through a series of bioassays. one commonly used bioassay is seed germination. in current research study effect of contami...

Several hypotheses are advanced for resource relationships among planktonic diatoms in African freshwater lakes that are consistent with the light and nutrient conditions of the lakes and the extant and fossil distributions of the diatom species in them. The hypotheses are all testable and are potentially powerful tools for interpreting past climatic conditions. A ranking is proposed along a Si...

The status of the vesiculariid ctenostome genus Amathia in New Zealand has been evaluated on the basis of all known material, including historic specimens in museums and those newly collected during formal surveillance of ports, harbours and vessels for possible alien species. Eight species are recognised, four of them new to science. Amathia gracei n. sp. and Amathia zealandica n. sp. are the ...