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SPIKEMOSS SPORES Unlike their close relatives the Clubmosses, Spikemosses produce two kinds of spore, which develop in fertile tips of stems and in the axils of leaves. Both male and female spores can be found in the same "cone". The smaller microspores grow into tiny gametophytes that produce male organs and the larger megaspores develop into female gametophytes. Selaginella may represent an intermediate step in the evolution of the early seed-bearing plants which also have spores (pollen grains and ovules) that differ in size. [CH] {FG}
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