Guide to Liverworts of Oregon: Key to Riccia 3
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Riccia 1 terrestrial > Riccia 2a marginal projections present > Riccia 3
Riccia trichocarpa.Wagontire Rock, Monterrey Co., Oregon. DHW m1235a.
3a Cilia long, growing over sporangia as well as on margins.
Riccia trichocarpa
Riccia beyrichiana. Pine Creek, Modoc Co., California. DHW m1462
3b Marginal cilia only.
(COUPLET 4)