original description
Owen, R., 1843. Lectures on the comparative anatomy and physiology of the invertebrate animals., available online at https://archive.org/stream/lecturesoncompar00owe#page/82/mode/2up [details]
additional source
Cartwright, P., & Collins, A. G. 2007. Class Hydrozoa. in: Daly, M., Brugler, M. R., Cartwright, P., Collins, A. G., Dawson, M. N., France, S. C., McFadden, C. S., Opresko, D. M., Rodriguez, E., Romano, S., & Stake, J. 2007. The phylum Cnidaria: A review of phylogenetic patterns and diversity 300 years after Linnaeus. Zootaxa 1668: 127-182., available online at http://www.mapress.com/zootaxa/2007f/z01668p182f.pdf
page(s): 153 [details] Available for editors 
[request]
status source
Collins, A. G. (2009). Recent insights into cnidarian phylogeny. <em>Smithsonian Contributions to the Marine Sciences.</em> 38: 139-149. [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Cnidaria with mostly epidermal gonads. Original life cycle includes a polyp and a medusa stage. The medusa stage develops the gonads. Polyps always without internal septae and pharynx, mostly radially symmetric. Medusae produced by budding from polyp stage, if such a stage is present. Medusa nearly always with a velum, without rhopalia. The original life cycle has been modified extensively: the medusa stage is often reduced to a mere appendage of the polyp stage, rarely completely reduced. In some orders the polyp stage is strongly or completely reduced. Polyp stages form often colonies of macroscopic size. Integrated colonies including polypoid and medusoid structures can also form complex colonies, giving them it the appearance of an individual organism. [details]
From editor or global species database
Unreviewed
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