Isoetes dubsii and Isoetes santacruzensis, two new species from lowland areas in South America by Jovani B. de S. Pereira, José Tasso F. Guimaraes, Maurício T. C. Watanabe

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Late Quaternary hydroclimate and vegetation changes in an upland lake in southeastern Amazonia by EDILSON F. DA SILVA, KAREN S. LOPES, RONNIE ALVES, LÉA MARIA M. CARREIRA, DELMO F. DA SILVA, LUIZA A. ROMEIRO, WILSON F. BATISTA JÚNIOR, TARCÍSIO M. RODRIGUES, RICARDO S. SECCO, JOSÉ TASSO F. GUIMARÃES

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Mapping and quantification of ferruginous outcrop savannas in the Brazilian Amazon: A challenge for biodiversity conservation. by Pedro Walfir M Souza-Filho, Tereza C Giannini, Rodolfo Jaffé, Ana M Giulietti, Diogo C Santos, Wilson R Nascimento, José Tasso F Guimarães, Marlene F Costa, Vera L Imperatriz-Fonseca, José O Siqueira

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Conservation implications of genetic structure in the narrowest endemic quillwort from the Eastern Amazon by Jeronymo Dalapicolla, Ronnie Alves, Rodolfo Jaffé, Santelmo Vasconcelos, Eder Soares Pires, Gisele Lopes Nunes, Jovani Bernardino de Souza Pereira, José Tasso F. Guimarães, Mariana C. Dias, Taís Nogueira Fernandes, Daniela Scherer, Fernando Marino Gomes dosSantos, Alexandre Castilho, Mirella Pupo Santos, Emiliano Nicolas Calderón, Rodrigo Lemes Martins, Rodrigo Nunes daFonseca, Francisco de Assis Esteves, Cecílio Frois Caldeira, Guilherme Oliveira

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