WoRMS taxon details
original description
(of Milleporadae Fleming, 1828) Fleming, J. (1828). A history of British animals, exhibiting the descriptive characters and systematical arrangement of the genera and species of quadrupeds, birds, reptiles, fishes, Mollusca, and Radiata of the United Kingdom; including the indigenous, extirpated, and extinct kinds, together with periodical and occasional visitants. <em>Edinburgh, Bell & Bradfute / London, James Duncan.</em> Pp. i-xxii, 1-565. corrigenda., available online at http://www.biodiversitylibrary.org/item/18569 page(s): 528 [details]
context source (MSBIAS)
MEDIN. (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN. version 1.0. [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Hydroid colony forming massive, calcareous exoskeletons (= coenosteum) of varied shape; coenosteum with an internal complex network of coenosarcal tubes and covered externally by a thin ectodermal layer, coenosteal surface perforated by pores; margins of pores not elevated; large gastropores surrounded by smaller dactylopores, forming indistinct cyclosystems; polyps polymorphic; gastrozooids relatively short and stout, with an oral whorl of four to seven short capitate tentacles, arising from gastropores; dactylozooids long, slender, mouthless, with scattered capitate tentacles, arising from dactylopores; cnidome with stenoteles and macrobasic mastigophores; gonophores arising from coenosarc within chambers embedded entirely in the coenosteum.
Medusa free swimming eumedusoids with exumbrellar nematocyst patches, radial and circular canals present, without tentacles and sense organs; gonads occupying the place of an indistinct manubrium. [details]
From editor or global species database
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