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PAUL BRIEN
FIG. 3. (1, 2, 3, 4) Semidiagrammatic representation of the growth of a branch of a
colony of Plumatella jungosa by cystidian budding. A, Zooecial parent which produces
B; B gives rise to C; C gives rise to D, etc. At the same time, each zooecium thus
formed produces daughter zooecia according to the same law; A gives rise to B', B".
etc.; B gives rise to C, C", etc.; C gives rise to D', D", etc. Each branch grows by
the tubular expansion of the ventral cystid wall of the original zooecium A, similar
to a stolon from which clusters of zooecia extend which are derived from it.
PAUL BRIEN
FIG. 3. (1, 2, 3, 4) Semidiagrammatic representation of the growth of a branch of a
colony of Plumatella jungosa by cystidian budding. A, Zooecial parent which produces
B; B gives rise to C; C gives rise to D, etc. At the same time, each zooecium thus
formed produces daughter zooecia according to the same law; A gives rise to B', B".
etc.; B gives rise to C, C", etc.; C gives rise to D', D", etc. Each branch grows by
the tubular expansion of the ventral cystid wall of the original zooecium A, similar
to a stolon from which clusters of zooecia extend which are derived from it.