Guide to Liverworts of Oregon: Key to Porella 4
HOME SPECIES INDEX GENUS INDEX GLOSSARY
Porella 1b plants not peppery tasting > 2b > underleaves sparsely toothed > 4
Porella navicularis
4a Underleaves and ventral lobes with a tight, narrowly revolute margin; ventral lobes ovate with smoothly rounded margins; underleaves close, often overlapping, the free portion approximately equal to the decurrent portion; no reaction to IKI
Porella navicularis
Porella cordaeana; Left, middle: ventral view; right: dorsal view (shows positive IKI reaction)
4b Underleaves and ventral lobes with plane margins; ventral lobes roughly triangular, with irregular, +/- straight margins, the outer margin curled in (but not tightly revolute); underleaves distant, stem usually visible between them, the decurrent portion usually much longer than the free portion; cells turning violet in IKI
Porella cordaeana