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Riccia belong to the phylum Marchantiophyta.
Marchantiophyta (liverworts), (hornworts), (mosses).
The first is the scientific name.Bryophyta/mosses. Marchantiophyta/liverworts
The Marchantiophyta are a division of non-vascular bryophyte land plantscommonly referred to as hepatics or liverworts.
Liverwort (marchantiophyta or hepatics) is bryophyte plant.