The branch of botany that deals with the study of mosses, liverworts, and hornworts (collectively called bryophytes).
Bryology derives from Greek 'bryon' (moss) plus 'logos' (study/word), literally meaning 'the study of mosses.' The discipline developed as a formal field of botany in the 18th and 19th centuries when botanists began systematically classifying plant diversity. Modern bryology uses genetics, ecology, and molecular techniques.
Bryology reveals that mosses are ancient survivors—they were among the first plants to colonize land 450 million years ago, and some moss species today are nearly identical to fossils. They're living fossils teaching us about early plant evolution.
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