write in detail about the group cryptogamae
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A cryptogam is a plant that reproduces by spores, without flowers or seeds. "Cryptogamae" means hidden reproduction, referring to the fact that no seed is produced, thus cryptogams represent the non-seed bearing plants. Other names, such as "thallophytes", "lower plants", and "spore plants" are also occasionally used.
A cryptogam (scientific name Cryptogamae) is a plant (in the wide sense of the word) that reproduces by spores, without flowers or seeds. ... Other names, such as "thallophytes", "lower plants", and "spore plants" are also occasionally used.
In contrast to the superior plants, which reproduce by means of flowers and seeds, the cryptogams reproduce using spores or by vegetative and asexual means. ... Even during their reproductive cycle the cryptogams need water as the male gametes swim in this element to reach the female gametes.