Guide to Liverworts of Oregon: Key to Riccia 4
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Riccia 1 terrestrial > Riccia 2a marginal projections present > Riccia 3b marginal cilia only > Riccia 4
Riccia beyrichiana. Pine Creek, Modoc Co., California. DHW m1462
4a Antheridial ostioles elevated; cilia not clustered.
Riccia beyrichiana
Riccia californica. Rogue River, Curry County, Oregon. DHW m2981.
4b Antheridial ostioles not elevated; spines clustered at thallus apex.
Riccia californica