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Publikováno v:
American Journal of Botany. 60:796-801
A B S T R A C T When antheridia of gametophytes of Equisetum hyemale L. are placed in water, only spermatid cells are released. These spermatid cells have from 6-12 fibrils radiating from 2-4 loci on the cell wall. One sperm is released from each spe