Polypodium hydriforme...a parasitic cnidarian! I had the great fortune to attend a great regional parasite conference this past weekend. The RockyParasitophile in bold, white lettering above the name of the conference, with the hosting field station's logo on the back.
Stauromedusae are the stalked jellyfishes. They are the sole living members of the class Staurozoa, and belong to the medusozoa subphylum of Cnidaria. They are unique among medusa jellyfish in that they do not have an alternation of polyp and medusa life cycle phases but are instead interpreted as an attached medusa stage, with a life style more resembling that of polypoid forms.