Definition of Thallophyta
in former classifications
: a primary division of the plant kingdom that consists of plants with single-celled sex organs or with many-celled sex organs of which all cells give rise to gametes, that is now commonly considered to be a heterogeneous assemblage, and that when recognized comprises the Algae and Fungi
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Origin and Etymology of thallophyta
New Latin, from thall- + -phyta
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