original description
Hincks, Th., 1868. A history of the British hydroid zoophytes.London, John van Voorst. Volume 1 : i-lxviii + 1-338, volume 2: pls 1-67., available online at https://www.biodiversitylibrary.org/page/46798707
page(s): 323 [details]
basis of record
Bouillon, J.; Boero, F. (2000). Synopsis of the families and genera of the Hydromedusae of the world, with a list of the worldwide species. <i>Thalassia Salent. 24</i>: 47-296 (look up in IMIS) [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Hydroid colony stolonal or erect, arising from creeping hydrorhiza; hydrotheca tubular to campanulate, radially or bilaterally symmetrical, often adnate for some distance basally, seldom pedicellate, margin entire, operculum usually absent, with or without diaphragm, without annular perisarcal thickening; hydranth with or without abcauline diverticulum; nematophores present or absent; cnidome: microbasic mastigophores; gonophores fixed sporosacs; gonothecae aggregated into coppinia or scapus, exceptionally solitary. [details]
From editor or global species database