科研之友
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摘要
the survey is a floristic inventory of amphipleuraceae and diploneidadaceae from rivers of the region to be flooded for the construction of caxias power plant, city of capitˋo leˋnidas marques, southwest of paran芍 state, brazil. samples were collected from march, 1997 to february, 1998, in the iguaˋu river and its tributaries: cotegipe, jaracati芍, chopim, tormenta, adelaide and guarani rivers. amphipleuraceae family was represented by five infraspecific taxa and the diploneidaceae by four. frustulia vitrea oestrup and diploneis ovalis (hilse) cleve were registered for the first time to paran芍 state.
