URMO taxon details
original description
(of Rhizorhagium album Rees, 1938) Rees W.J. (1938). Observations on British and Norwegian hydroids and their medusae. <em>Journal of the Marine Biological Association of the U. K.</em> 23: 1-42. page(s): 9, fig. 2a-c, [details] Available for editors 
original description
(of ) Alder, J. (1862). Observations on British Zoophytes. <em>Edinburgh new philosophical Journal (N. S.).</em> 15: 44-145., available online at https://www.biodiversitylibrary.org/page/24877565 page(s): 144 [details] 
redescription
Schuchert, P. (2007). The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera part 2. <em>Revue suisse de Zoologie.</em> 114: 195-396. page(s): 264, fig. 27 [details] 
redescription
Schuchert, P. 2012. North-West European Athecate Hydroids and their Medusae. Synopses of the British Fauna (New Series) 59. The Linnean Society of London, London, pp. i-viii, 1-364. page(s): 226, fig. 210 [details] Available for editors 
Unreviewed
Van Beneden (1867, pl. 08)
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