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plural gametophytes
(botany) A plant (or the haploid phase in its life cycle) which produces gametes by mitosis in order to produce a zygote. quotations examples
In liverworts like Marchantia, which lives in most soggy places worldwide, the gametophyte is the dominant phase – the thing you would think of as the plant.
2018 May 25, Susannah Lydon, The Guardian