Genetically, Club Mosses and Spike Mosses are not closely related to any major plant group still living today. Historically they have been called “Fern Allies,” implying a relation to true ferns.

Plants Frozen Under a Glacier for 400 Years Can Come Back to Life Long-buried mosses recently exposed in the wake of a Canadian glacier’s retreat are sprouting new growth, a study shows ...

Not all plants produce flowers. These are called non-flowering plants. Ferns and mosses are examples of plants which do not produce flowers. They grow from spores instead of seeds.