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Amorphous to lobate. Conulose and rugose surface with oscules on top of lobes with dermal canals. Compressible (Ref. 415). Grows massive or in thick large tubes (Ref. 86785). Color: highly variable, from purple, blue, pale blue, bluish gray, bluish green, turquoise, olive-gray, clear green, yellow-green, clear yellow, golden yellow, to gray and almost white. Interior is often a bit lighter than exterior. Skeleton: ectosomal membrane with tylotes strewn about tangential strands, with some erect spicule columns supporting the membrane (Ref. 87254). |