Guide to Liverworts of Oregon: Key to Genera 74
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1a plants thallose > 2b chloroplasts numerous > 62b thallus tissue complex > 70b terrestrial > 72b pores differentiated > 73a gemmae present > 74
Marchantia, Lane Co., Oregon.
74a Gemmae cups circular; male and female sex organs both on stalked receptacles (on separate
plants); common near streams in all parts of the state
Marchantia
Lunularia cruciata, Lane Co., Oregon.
74b Gemmae cups crescentic (lunate, open on one side); the reproductive structures not seen in
our area; introduced and weedy mainly in urban areas but becoming established along coastal roads and inland valleys.
Lunularia cruciata