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Friedelin, the 4-phenylcoumarins mammeisin, 4-phenyl-5-hydroxy-6-(3-methyl-1-oxobutyl)-2 '-(1-hydroxy-1-methylethyl)-3 ',4 'dihydro(5 ',4 ':7,8) furancoumarin, and mammeigin have been puri®ed from the stem of Kielmeyera elata. These compounds have previously been reported for the same species. In addition, a new derivative of mammeigin has been isolated and identi®ed as 4phenyl-5-hydroxy-6-(3-hydroxymethyl-1-oxo-butyl)-2 ',2'-dimethyl(6 ',5 ':7,8)pyrancoumarin.

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Decorrente da investigação e de um detalhado estudo biotaxonômico do gênero Kielmeyera Martius (Guttiferae), oito novas espécies, K. insignis, K. rizziniana (ambas do Estado do Rio de Janeiro), K. decipiens (do Estado de São Paulo), K. albopunctata, K. divergens, K. occhioniana, K. rufotomentosa e K. sigiliata (todas do Espírito Santo), são aqui descritas e ilustradas. Características geográficas e ecológicas como também as afinidades taxonômicas das espécies são também apontadas.

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.

No abstract