Guide to Liverworts of Oregon: Key to Genera 24
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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 > 20b lobule absent > 23b lobule absent > 24
Calypogeia fissa, Douglas Co., Oregon. DHW 8814.
24a Leaves entire or rarely bidentate at apex; plants delicate, pale, often with gemmae;
underleaves rotund and emarginate to deeply bilobed; plants prostrate with numerous rhizoids bunched
at base of underleaves
Calypogeia
Bazzania
24b Leaves 2-3 dentate at apex; plants firm, opaque, olive-green to brownish; lacking gemmae but
often with caducous leaves; underleaves squarish, shallowly and irregularly 2-3 dentate; plants mostly
ascending with few rhizoids
Bazzania