Rhizophysidae

Pugh, P. R., 2019, A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae), Zootaxa 4669 (1), pp. 1-91: 74

publication ID

http://doi.org/ 10.11646/zootaxa.4669.1.1

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:6E2F8FE4-4524-44B1-B5F8-BCC58D4FDF8E

DOI

http://doi.org/10.5281/zenodo.3796968

persistent identifier

http://treatment.plazi.org/id/0384A837-821B-FF92-FF37-F9B7FA627CDB

treatment provided by

Plazi

scientific name

Rhizophysidae
status

 

Key to the species of the Family Rhizophysidae 

It should be noted that all four recognised rhizophysid species possess relatively large pneumatophores, compared with Physonectae  species, and, uniquely have finger-like processes from the gas gland, called hypocystic villi, hanging down from the base of the pneumatophore.

1. Young gastrozooids with lateral wing-like structures, ptera ...................................Genus Bathyphysa  ... 2. Young gastrozooids without lateral wing-like structures...................................... Genus Rhizophysa  ...3.

2. Tentacles without side branches, tentilla.................................................... Bathyphysa conifera Tentacles  with side branches, tentilla....................................................... Bathyphysa sibogae 

3. Tentacles with simple tubular tentilla................................................... Rhizophysa eysenhardtii Tentacles  with three types of complex tentilla............................................... Rhizophysa filiformis