In this way are formed the familiar feathery colonies of Plumularia, in which the pinnules are all in one plane, while in the allied Antennularia the pinnules are arranged in whorls round the main biserial stem.
- Diagram of sympodial budding, system, from which simple unbranched Plumularia-type.
One class g g of polyps, the dactylozoids of branching in the Plumularia-type; (dz), lose their mouth and compare with fig.
D, Type of Plumularia, Agalma, t, Tentacles.
Such a type is found in Plumularia and also in Agalma (fig.
A very abundant and prolific family; well-known British genera are Plumularia, Antennularia and Aglaophenia.
Spencer, " A new Family of Hydroidea (Clathrozoon), together with a description of the Structure of a new Species of Plumularia," Trans.