Without going into their reasons, Bold, Alexopoulos, & DelBevoryas (1980) and Crandall-Stotler (1980) believe that there are at least three independent lines of bryophytes and that this is best reflected by establishing three divisions - the Bryophyta (mosses), Hepatophyta (liverworts), and Anthocerotophyta (hornworts).

2002, William R. Buck, Bryophytes, entry in Niles Eldredge (editor), Life on Earth, page 202,
Because of their small size and often delicate structure, bryophytes have a poor fossil record, dating back only about 290 million years.

And so it was that I was introduced to Len Ellis and the quiet world of bryophytes – mosses to the rest of us.

Bryophyte

Meaning

Noun