A plant belonging to the Cryptogamia.

A plant that reproduces sexually without forming seeds. This group includes many common tundra ground plants, such as lichens, symbiotic associations of algae and fungi, and mosses, members of the class Musci.

formerly recognized taxonomic group including all flowerless and seedless plants that reproduce by means of spores: ferns, mosses, algae, fungi

See Biological soil crusts.