To study the species of the genus Pythium, water and soil samples were collected, every three months, from June/2005 to June/2006, in the "Parque Estadual da Serra da Cantareira". The samples were baited, in the laboratory, with celulosic, quitinous and keratinous substrates, to isolate these organisms. Six species were identified and mentioned for the first time for this area: Pythium dissotocum Drechsler, P. echinulatum Matthews, P. middletonii Sparrow, P. rostratum Butler, P. torulosum Coker & Patterson and P. vexans de Bary.
Atlantic Rainforest; biodiversity; Oomycetes
