Gametophyte
Haploid stage in the life cycle of plants and algae
A gametophyte is one of the two alternating multicellular phases in the life cycles of plants. It is a haploid multicellular organism that develops from a haploid spore, that has one set of chromosomes. The gametophyte is the sexual phase in the life cycle of plants and algae.
From Wikipedia, under CC BY-SA. More on occurri.