Endowed with amerism; not dividing into parts or segments.
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References in periodicals archive ?
It has been also stated that ameristic, irregular forms of development in these genera could be due to deviations from any of those Adiantum or Ceratopteris types, by means of inhibition of the initial meristematic cell (Gabriel y Galan & Migliaro 2011).
There are two basic morphologies among gametophytes of Ceratopteris richardii, the large meristic hermaphrodite and the small ameristic male.
The presence of antheridiogens is suspected on the basis of small ameristic male gametophytes in the cultures.