Definitions

from The Century Dictionary and Cyclopedia

  • In cryptogamic botany, having two periods of activity separated by one of rest, as the zoöspores of certain genera of Saprolegnicæ.

Etymologies

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Examples

  • I have seen, however, in pui-e cultures of this form, abun - dant empty membranes with every appearance of having been cast oflf by a diplanetic zoospore (Fig. 118); but unfortunately, I have not observed the actual escape of the spores from them.

    Transactions of the American Philosophical Society

  • It is evident that the most primitive condition as regards the zoospores is pre - sented by the typically diplanetic form, as found in Saprolegnia.

    Transactions of the American Philosophical Society

  • I have not followed the zoospore from its encystment to its germination; but, as the spores germinate freely in cultures which contain no trace of empty mem - branes, such as are seen with germinating diplanetic spores, there can be no doubt of their monoplanetism.

    Transactions of the American Philosophical Society

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