Belongs within: Macrocolonia.
The Plumulariidae are a family of hydrozoans in which paired nematothecae are either absent or never fused with the hydrothecae.
Plumulariidae [Plumulariinae]
|--Schizotricha Allman 1883VV77
|--Halicornopsis elegans (Lamarck 1816) (see below for synonymy)B14
|--Thecocaulus Bale 1915VV77
|--Dentitheca bidentataLS09
|--HalicornariaB14
| |--H. baileyiB14
| `--H. furcata [incl. H. intermedia Bale 1914, H. furcata var. intermedia]B14
`--Plumularia Lamarck 1816 [incl. Heteroplon Allman 1877]VV77
| i. s.: P. falcataR26
| P. myriophyllumR26
| P. pinnataA64
| P. strictocarpaLS09
| P. strobilophora Billard 1913 [=P. strobilifera Billard 1933]VV77
| P. warreni Stetchow 1919HJ08
|--+--P. habereriLS09
| `--P. spiralisLS09
`--+--+--P. obliquaLS09
| `--+--P. margarettaLS09
| `--P. pulchellaLS09
`--+--NemertesiaLS09
| |--N. antenninaLS09
| |--N. perrieriLS09
| |--N. ramosaPP64
| `--N. tetrastichaPP64
`--+--+--P. lageniferaLS09
| `--P. setacea (Linnaeus 1758)LS09, VV77 [=Sertularia setaceaVV77]
`--+--P. setaceoidesLS09
`--+--P. filicaulisLS09
`--P. hyalinaLS09
Halicornopsis elegans (Lamarck 1816) [=Plumularia elegans, Aglaophenia elegans; incl. Ag. avicularis Kirchenpauer 1872, Halicornopsis avicularis, Azygoplon rostratum Allman 1883]B14
*Type species of generic name indicated
References
[A64] Allman, G. J. 1864. Report on the present state of our knowledge of the reproductive system in the Hydroida. Report of the British Association for the Advancement of Science 33: 351–426.
[B14] Briggs, E. A. 1914. Hydrozoa from one hundred fathoms, seven miles east of Cape Pillar, Tasmania. Records of the Australian Museum 10 (10): 285–302, pls 25–26.
[HJ08] Huisman, J. M., D. S. Jones, F. E. Wells & T. Burton. 2008. Introduced marine biota in Western Australian waters. Records of the Western Australian Museum 25 (1): 1–44.
[LS09] Leclère, L., P. Schuchert, C. Cruaud, A. Couloux & M. Manuel. 2009. Molecular phylogenetics of Thecata (Hydrozoa, Cnidaria) reveals long-term maintenance of life history traits despite high frequency of recent character changes. Systematic Biology 58 (5): 509–526.
[PP64] Peres, J. M., & J. Picard. 1964. Nouveau manuel de bionomie benthique de la mer Mediterranee. Recueil des Travaux de la Station Marine d’Endoume, Bulletin 31 (27): 5–137.
[R26] Risso, A. 1826. Histoire naturelle des principales productions de l’Europe méridionale et particulièrement de celles des environs de Nice et des Alpes maritimes vol. 5. F.-G. Levrault: Paris.
[VV77] Vervoort, W., & P. Vasseur. 1977. Hydroids from French Polynesia with notes on distribution and ecology. Zoologische Verhandelingen 159: 1–98.