Acrorhagi

Acrorhagi : Marginal outgrowths of the body-wall found in some genera of Actiniaria, containing a strong concentration of Holotrichs. They may be simple and spherical, slightly branched, or even frondose. These outgrowths occur in the Family Actiniidae, specifically in these 9 genera: Actinia, Anemonia, Anthostella, Phymactis, Phymanthea, Bunodosoma, Pseudactinia, Oulactis, and Anthopleura

A more descriptive defintion of this term is also given:

Acrorhagi :endocoelic structure outside the tentacle crown and adorad (further away from the mouth) to the marginal sphincter in which the ectoderm contains holotrichous nematocysts and epitheliomuscular cells that are vacuolated at their base (Daly 2003).

Acrorhagi Images: (species names are linked to the Hexacorallian database)


Species Anthopleura anjunae CAPTION Figs. 1-5, different views of holotype (RMNH Coel. 18428) and enlarged details of marginal region showing verrucae and acrorhagi;"" Permission to display image granted by the National Natuurhistorisch Museum, Leiden, Netherlands.	Species Anthopleura anjunae CAPTION Figs. 1-5, different views of holotype (RMNH Coel. 18428) and enlarged details of marginal region showing verrucae and acrorhagi;"" Permission to display image granted by the National Natuurhistorisch Museum, Leiden, Netherlands.

Species Anthopleura anjunae CAPTION Figs. 1-5, different views of holotype (RMNH Coel. 18428) and enlarged details of marginal region showing verrucae and acrorhagi;"" Permission to display image granted by the National Natuurhistorisch Museum, Leiden, Netherlands.	Species Anthopleura McMurrichi CAPTION Anthopleura Mc Murrichi Figur 64a und b. Nesselzellen aus dem "Acrorhagi". Imm. 1,5 Oc. 2.