Guide to Liverworts of Oregon: Key to Jungermannia 2
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Jungermannia 1a perianth exserted > Jungermannia 2
Liochlaena lanceolata - Pine Creek, Modoc County, California, DHW m1443.
2a Perianth smoothly cylindrical, not plicate, sharply contracted at apex with a beaked
mouth recessed in the depressed summit; paroicous; occasionally gemmiferous; usually on peat, wood, or other organic substrates; occasional on westside and common from the Cascade crest eastward
Liochlaena lanceolata
Solenostoma rubrum - Perianth with tear from capsule emerging through small mouth. Lane Co., Oregon. DHW m2808
2b Perianth fusiform to obovate or distinctly plicate with plications shallow to deep; beak, if present, not recessed; sexuality various; gemmae always lacking; usually on soil or rocks; provenience various
(Couplet 3)