Guide to Liverworts of Oregon: Key to Radula 1
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1b plants leafy > 3b leaves not divided, not ciliate > 6a oil bodies 2+ or unknown > 7b no small dorsal lobe > 10b leaves incubous > 20a lobule present > 21a underleaves absent > Radula
1b plants leafy > 3b leaves not divided, not ciliate > 6b oil bodies solitary/absent > 13a oil bodies present > 14b oil bodies brown > 15 bilobed, dorsal lobe larger > Radula
Radula complanata, Deer Creek, Lane County, Oregon. DHW m1617a
1a Main stem lacking microphyllous branchlets (or microphyllous branches confined to short stem segments subtending perianths); widespread at middle to low elevations
(Couplet 2)
Radula brunnea, Saddle Mountain, Clatsop County. DHW 2482.
1b Main stem regularly adorned with microphyllous branchlets; rare alpine species
(Couplet 3)