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Taxonomic re-evaluation of the Azolla genus in …
Taxonomic re- evaluation of the Azolla genus in PEREIRA, G. TEIXEIRA, I. SEVINATE-PINTO, T. ANTUNES and F. CARRAPI OAzollaLam. is an aquatic fern with deeply bilobedleaves. It has a very thin and hyaline ventral leaf lobe andan aerial and chlorophyllous dorsal lobe, which have anextracellular cavity. Populations of bacteria belonging toseveral genera, and a population of nit rogen-fixingcyanobacteria, Anabaena azollaelive in this cavity(CARRAPI O, 1991; GRILLICAIOLA& FORNI, 1999). Thisassociation is very important as a natural organic fertilis-er for rice production in several countries (LUMPKIN&PLUCKNETT, 1980).Research involving Azollahas often been hindered byconfusion on the taxonomy of the genus . This genus isdivided into two subgenera: Azolla , with two sections Azolla (A. filiculoidesLam., A. rubraR. Br., A. carolini-anaWilld., A. microphyllaKaulf.)
Taxonomic re-evaluation of the Azolla genus in Portugal A.L. PEREIRA, G. TEIXEIRA, I. SEVINATE-PINTO, T. ANTUNES and F. CARRAPIÇO AzollaLam. is an aquatic fern with deeply bilobed
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