Commentaire : B. vivida can be solitary or colonial by extra-tentacular budding process. Septa composed of multiple fan systems, and margins are dentated. In total at least 6 cycles of septa are present, the first 3 are complete and reach the columella, the others are less developed and those of the sixth cycle are less than ½ of the others in length. Septal margins and sides finely granulated. Columella well developed and formed by trabecular processes from the inner margins of septa and papillae fused at the center to form a lamellar structure gives the columella a bilateral fashion First cycle septa are slightly thicker than the remainder The epitheca is well formed. The polyps are fleshy and the mantle can be brightly coloured, with different cycles of septa could be guessed by the shape of the mantle above them.
Protection : basse