P.arecae was first isolated from the leafs fruits,peduncles and apexes of aecanut trees in India. P.arecae is classified in group II . Sporangia are papillate with shapes varying from very broad ellipsoidal to obturbinate to almost spherical with a tapered base. Sporangiophores are irregularly branched or in a simple sympodium. The species is normally heterothallic having globose oogonia and amphigynous antheridia. Optimum temperature for growth is between 27oC and 30oC.