Which stage of the lycophyte life cycle produces spores?

In the life cycle of a lycophyte, the stage that produces spores is the sporophyte.1

As with other vascular plants, lycophytes undergo an alternation of generations between a sexual, gamete-producing phase known as the gametophyte and the conspicuous, spore-producing sporophyte phase. The sporophyte is the dominant, diploid phase of the plant's life cycle.12