Guide to Liverworts of Oregon: Cephalozia pleniceps (Aust.) Lindb.
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Cephalozia 1b sinus <0.5 of leaf > Cephalozia 7a perianth entire to dentate; cells wider than 25 μm at lobe base > Cephalozia 8b lobe tip cell walls evenly thickened > Cephalozia pleniceps
Synonym: Fuscocephaloziopsis pleniceps(Austin) Váňa & L. Sõderstr.
Special Status: None.
Recognition: The lack of cell wall thickening at the apex of the terminal cell of leaf lobes is diagnostic for this species and will distinguish it from the other species of Cephalozia with leaves divided less than half their length.
Distribution: On well decayed wood or peat in swamps and bogs at upper elevations in the Cascade Mountains.
Comments: The lobe tip character came to my attention in the book of British liverworts by Paton (1999). It is important to examine several leaves on different shoots as the cell wall thickening can be somewhat subtle in C. lunulifolia. Sotler and Crandall-Stotler (2017) place this species in Fuscocephaloziopsis, a genus that their concept includes most of the traditional Family Cephaloziaceae.
White Rock Fen, Linn Co., Oregon. DHW m1618.
Siskiyou County, California. Kellman 6940a CAS.
Leaf lobes. Siskiyou County, California. Kellman 6940a CAS.
Siskiyou County, California. Kellman 6940a CAS.
Female shoot. White Rock Fen, Linn Co., Oregon. DHW m1618.
Male shoot. White Rock Fen, Linn Co., Oregon. DHW m1618.