Guide to Liverworts of Oregon: Key to Fossombronia 3
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Fossombronia 1a seta long > Fossombronia 2b lamellae widely spaced on spores > Fossombronia 3
Fossombronia pusilla - Ferris Gulch, Jackson Co., Oregon. DHW
9114a
3a Spores with lamellae as high as the space between the lamellae; the most common species in Oregon.
Fossombronia pusilla
Fossombronia wondraczekii - Muir Woods, Marin County, California. DHW
3042
3b Spores with lamellae less than half as high as the space between the lamellae; not common in Oregon.
Fossombronia wondraczekii