Guide to Liverworts of Oregon: Key to Cephalozia 2
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Cephalozia 1a sinus >0.5 of leaf > Cephalozia 2
Cephalozia leucantha, Queen Charlotte Is., British Columbia. WB Schofield 33896.
2a Leaf cells at lobe base (usually much) less than 35 X 25 μm.
(COUPLET 3)
Cephalozia bicuspidata, Skamania Co., Washington. DHW 7813.
2b Leaf cells at lobe base (usually much) larger than 35 x 25 μm.
(COUPLET 5)