Guide to Liverworts of Oregon: Key to Genera 29
1b plants leafy > 3b leaves not divided, not ciliate > 6a oil bodies 2+ or unknown > 7b no small dorsal lobe > 10a succubous > 11a anisophyllous > 12a leaves unlobed > 28a underleaves inconspicuous > 29
Fossombronia longiseta (vel aff.), Douglas Co., Oregon. DHW 6782a.
29a Rhizoids (but not stems)intensely purplish-red; stems stout, fleshy; leaves irregularly shaped with wavy, ruffled margins; rhizoids (but not stems)intensely purplish-red; sex organs on upper side of stem
Fossombronia
Jungermannia polaris, Baker Co., Oregon. DHW 8217.
29b Rhizoids not reddish unless stemsor basal parts of leaves are similarly colored; stems relatively slender, firm; leaves clearly rotund or ovate; antheridia axillary; archegonia terminal on stem
(Couplet 30)
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