What is any coral of the genus Isis, or family Isidæ, composed of joints of white, stony coral, alternating with flexible, horny joints. See Gorgoniacea called?

isis — (Zoöl.) Any coral of the genus Isis, or family Isidæ, composed of joints of white, stony coral, alternating with flexible, horny joints. See Gorgoniacea. (Webster's 1913.)

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