Diadema

Diadema may mean:

In the Regnum Animalia - Diadema Schumacher, 1817 (Arthropoda : Coronulidae)
In the Regnum Animalia - Diadema Gray, 1825 (Echinodermata : Diadematidae)
In the Regnum Fungi - Diadema Shoemaker & C.E. Babc. (Ascomycota : Diademaceae)

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