context source (Hexacorallia)
Fautin, Daphne G. (2013). Hexacorallians of the World. (look up in IMIS) [details]
basis of record
Calder D.R. (1997). Shallow-water hydroids of Bermuda: superfamily Plumularioidea. <em>Royal Ontario Museum Life Sciences Contributions.</em> 161: 1-86. [details] 
From editor or global species database
Authority ICZN (Fourth Edition):
36.1. Statement of the Principle of Coordination applied to family-group names. A name established for a taxon at any rank in the family group is deemed to have been simultaneously established for nominal taxa at all other ranks in the family group; all these taxa have the same type genus, and their names are formed from the stem of the name of the type genus [Art. 29.3] with appropriate change of suffix [Art. 34.1]. The name has the same authorship and date at every rank. [details]
Diagnosis Hydroid colonies erect, branched or not, stems mono- or polysiphonic; hydrothecae always uniseriate, sessile, and partly adnate, rim cusped or even; no true diaphragm, but a well-defined floor with usually excentric hydropore; hydranths with conical hypostome and single whorl of filiform tentacles; with gastrodermis differentiated into digestive and non-digestive portions. Nematophores always present, usually with protective nematotheca; gonotheca borne singly or grouped, unprotected or protected by modified hydrocladia or appendages; gonophores usually fixed sporosacs, rarely much reduced medusoid. [details]
From editor or global species database
