| The zoarium is of delicate appearance and branches sparingly. |
| The growth of the zoarium is much more luxuriant, and the form of the resting buds is different. |
| The zoarium consists of a circular or oval mass of no great size. |
| Major Walton found it growing over a zoarium of Hislopia lacustris. |
| A zoarium with its included polypides is finally produced from the young polypide by the rapid development of buds. |
| The zoarium as a whole is either recumbent and adherent or at least partly vertical. |
