Obelia geniculata (Linnaeus, 1758)
(a hydroid)

Taxonomic hierarchy:
SpeciesObelia geniculata (a hydroid)
GenusObelia (a genus of hydroids)
FamilyCAMPANULARIIDAE (a family of hydroids)
OrderLEPTOTHECATA (an order of coelenterates)
SubclassHYDROIDOLINA (a subclass of coelenterates)
ClassHYDROZOA (hydroids)
PhylumCNIDARIA (hydroids, jelly fish, sea anemones, jellyfish)
SubkingdomEUMETAZOA (metazoans)
KingdomANIMALIA (animals)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Obelia geniculata (a hydroid) :
1: Obelia geniculata (a hydroid)
28 Apr 2010 OSGR: SY67 50° 30’ N, 2° 30’ W Vice County: Dorset (VC 9) England
growing on stipe of Bladder Wrack
Image 1: Colony - close-up - against Fucus frond - enlargedImage 2: Colony - close-up - against Fucus frond - highly enlargedImage 3: Colony - close-up - against Fucus frond - highly enlarged (2)Image 4: Colony - close-up - against Fucus frond - highly enlarged (3)Image 5: Colony - close-up - enlarged - white backgroundImage 6: Colony - close-up - highly enlargedImage 7: Colony - close-up - highly enlarged (2)Image 8: Colony - close-up - highly enlarged (3)Image 9: Colony - close-up - white backgroundImage 10: Gonangia - magnified - white backgroundImage 11: Polyps - highly enlargedImage 12: Polyps - highly enlarged (2)Image 13: Polyps - highly enlarged (3)Image 14: Polyps - highly enlarged (4)Image 15: Polyps - Fucus background - magnifiedImage 16: Polyps - magnified - white backgroundImage 17: Polyps - magnified - white background (2)Image 18: Polyps - magnified - white background (3)Image 19: Polyps - magnified - white background (4)Image 20: Branching stem - microscope low magnification - white backgroundImage 21: Gonangia - magnified - black backgroundImage 22: Gonangia - magnified - white backgroundImage 23: Gonangia - microscope low magnification - white backgroundImage 24: Gonangia - microscope low magnification - white background (2)Image 25: Gonangium - magnified - white backgroundImage 26: Gonangium - magnified - white background (2)Image 27: Medusa emerging from gonangium - microscope low magnification - white backgroundImage 28: Polyp and gonangium - magnified - white backgroundImage 29: Polyp - magnified - black backgroundImage 30: Polyps and gonangia - microscope low magnification - white backgroundImage 31: Polyps and gonangia - microscope low magnification - white background (2)Image 32: Polyps and gonangia - microscope low magnification - white background (3)Image 33: Polyps and gonangia - microscope low magnification - white background (4)Image 34: Polyps and gonangium - magnified - black backgroundImage 35: Polyps - magnified - black backgroundImage 36: Polyps - microscope low magnification - white backgroundImage 37: Polyps - microscope low magnification - white background (2)Image 38: Polyp - withdrawn into theca - microscope low magnification - black backgroundImage 39: Polyp - withdrawn into theca - microscope low magnification - black background (2)Image 40: Polyp - withdrawn into theca - microscope low magnification - black background (3)Image 41: Polyp - withdrawn into theca - microscope low magnification - white backgroundImage 42: Polyp - withdrawn into theca - microscope low magnification - white background (2)Image 43: Polyp - withdrawn into theca - microscope low magnification - white background (3)Image 44: Stem branch - microscope low magnification - black backgroundImage 45: Stem - microscope low magnification - white background

Obelia geniculata (a hydroid) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Obelia geniculata (a hydroid)
BioInfoBioInfo (www.bioinfo.org.uk) has 0 host/parasite/foodplant and/or other relationships for Obelia geniculata (a hydroid)
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