Guide to Liverworts of Oregon: Key to SCAPANIA 3
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Scapania 1 oil bodies several per cell > Scapania 2b marginal teeth evenly spaced or lacking > Scapania 3
Scapania americana, Lane Co., Oregon. DHW s.n.
3a Dorsal lobe with decurrent wing on normally developed leaves
(Couplet 4)
Scapania irrigua
3b Dorsal lobe not decurrent on normal leaves
(Couplet 5)
Copyright 2006 Northwest Botanical Institute