Guide to Liverworts of Oregon: Key to Pellia 2
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Pellia 1b involucre short > Pellia 2
Female Pellia neesiana, Lincoln County, Oregon.
2a Unisexual; male and female clones sometimes intertwined but sex organs always on separate thalli; involucre a short tube angled towards apex of thallus; common along streams at low elevations.
Pellia neesiana
Pellia epiphylla - Darrington District, Washington. Lesher 1956b.
2b Bisexual; antheridial chambers looking like patches of pimples on same thallus as involucres; the involucres merely flaps over the archegonial pits, not forming complete, tubular rings.
Pellia epiphylla