The following is a very incomplete list of liverworts found east of the Cascade Mountains of Oregon and Washington. Those species followed by a question mark are at this point unconfirmed for this area of study. The Consortium of Pacific Northwest Herbaria was used to determine which species are found east of the Cascade Mountains in the Pacific Northwest.
Aneuraceae:
Aneura pinguis
Riccardia latifrons
Riccardia multifida
Riccardia palmata
Anthocerotaceae:
Anthoceros fusiformis
Anthoceros punctatus
Aytoniaceae:
Asterella gracilis
Asterella ludwigii
Reboulia hemisphaerica
Calypogeiaceae:
Calypogeia muelleriana
Calypogeia neesiana
Calypogeia trichomanis
Cephaloziellaceae:
Cephaloziella divaricata (Synonyms: Cephaloziella byssacea, Cephaloziella starkei, Cephaloziella starkei var. scabra)
Cephaloziella hampeana
Cephaloziella rubella
Cephaloziella spinigera
Cleveaceae:
Athalamia hyalina (Synonym: Clevea hyalina)
Peltolepis quadrata
Conocephalaceae:
Scented Liverwort: Conocephalum conicum
Frullaniaceae:
Frullania bolanderi
Gymnomitriaceae:
Gymnomitrion obtusum
Marsupella ustulata
Jungermanniaceae:
Jungermannia exsertifolia ssp. cordifolia
Jungermannia lanceolata
Jungermannia leiantha
Jungermannia polaris
Lepidoziaceae:
Little Hands Liverwort: Lepidozia reptans
Marchantiaceae:
Common Liverwort, Umbrella Liverwort: Marchantia polymorpha
Preissia quadrata
Pelliaceae:
Endive Pellia: Pellia endiviifolia
Ring Pellia: Pellia neesiana ssp. columbiana (Synonym: Marsillia neesiana)
Plagiochilaceae:
Plagiochila porelloides (Synonym: Plagiochila satoi)
Porellaceae:
Madotheca platyphylla
Porella cordaeana (Synonym: Porella rivularis)
Tree-ruffle Liverwort: Porella navicularis
Porella roellii
Radulaceae:
Radula complanata
Scapaniaceae:
Anastrophyllum helleranum
Anastrophyllum minutum
Barbilophozia barbata
Barbilophozia hatcheri (Synonym: Lophozia hatcheri)
Barbilophozia lycopodioides
Barbilophozia quadriloba
Diplophyllum taxifolium
Douinia ovata (Synonym: Lophozia ovata)
Gymnocolea inflata
Lophozia ascendens
Lophozia excisa
Lophozia gillmanii
Lophozia guttulata
Lophozia heterocolpos
Lophozia incisa
Lophozia longidens
Lophozia longiflora
Lophozia sudetica
Lophozia ventricosa
Scapania americana (Synonyms: Scapania bolanderi var. americana, Scapania granulifera)
Scapania curta
Scapania dentata
Scapania mucronata
Scapania paludosa
Scapania umbrosa
Scapania undulata
Tritomaria exsectiformis
Tritomaria quinquedentata
Targioniaceae:
Targionia hypophylla