Parkeriaceae Ceratopteris pteridoides (Hook) Hieron - Peru J. E. Householder 939 image_info.php?img=images/collections/jehouseholder_000939_01_p.jpg&id=43978#image43978 Parkeriaceae Ceratopteris pteridoides (Hook) Hieron - Peru J. E. Householder 893 image_info.php?img=images/collections/jehouseholder_000893_01_p.jpg&id=34675#image34675 Parkeriaceae Ceratopteris pteridoides (Hook) Hieron - Peru J. E. Householder 893 image_info.php?img=images/collections/jehouseholder_000893_02_p.jpg&id=43974#image43974