 Four different types of male flowers exist . On the basis of these flower types , the genus has often been split into four genera — a more narrowly defined Attalea , Orbignya , Maximiliana and Scheelea . The species sometimes referred to Orbignya have coiled anthers , while the other groups have straight ones . The petals of those placed in Maximiliana are much shorter than the stamens , while those placed in Scheelea and a more narrowly defined Attalea have petals that are longer than the stamens . Five species do not fit easily into any of these groups ; this fact has been used as an argument in favour of considering this group a single genus . 
 Four different types of male flowers exist . On the basis of these flower types , the genus <a href='been_done' title='1'><mark>has</mark></a> often been split into four genera — a more narrowly defined Attalea , Orbignya , Maximiliana and Scheelea . The species sometimes referred to Orbignya <a href='got' title='2'><mark>have</mark></a> coiled anthers , while the other groups <a href='got' title='3'><mark>have</mark></a> straight ones . The petals of those placed in Maximiliana <a href='drop_aux' title='4'><mark>are</mark></a>much shorter than the stamens , while those placed in Scheelea and a more narrowly defined Attalea <a href='got' title='5'><mark>have</mark></a> petals <a href='null_relcl' title='6'><mark>that</mark></a><a href='drop_aux' title='7'><mark>are</mark></a>longer than the stamens . Five species do not fit easily into any of these groups ; this fact <a href='been_done' title='8'><mark>has</mark></a> been used as an argument in favour of considering this group a single genus . 
4 different types of male flowers exist . On da basis of these flower types , tdagenus done often been split into fou4nera — a more narrowly defined Attalea , Orbignya , Maximiliana and Scheelea . Thdapecies sometimes referred to Orbignya got coiled anthers , while the other groups got str8 ones . Thedatals of those placed in Maximiliana much shorter than the stamens , while those placed in Scheelea and a more narrowly defined Attalea got petals longer than the damens . Five species do not fit easily into any of these groups ; this fact done been used as an argument in favour of considering this group a single genus .