"Phyllodesmium crypticum has very nodulose cerata, especially along the edges (unlike Phyllodesmium briareum and Phyllodesmium serratum - both have completely smooth cerata)."
Comment from Richard Willan
Phyllodesmium crypticum has very nodulose cerata, especially along the edges (unlike Phyllodesmium briareum and Phyllodesmium serratum - both have completely smooth cerata).