Guide to Liverworts of Oregon: Key to Riccardia 3
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Riccardia 1b oil bodies present in many cells > Riccardia 2b oil bodies absent from most epidermal cells > Riccardia 3
Riccardia multifida, wing margin of thallus, Wolf Creek, Lane County, Oregon. DHW 6772.
3a Unistratose margin 2-3 cells wide; thallus regularly pinnately branched; monoicous
Riccardia multifida
2 X 4 Creek, Coos Co., Oregon. DHW 9369.
3b Margin not unistratose or unistratose margin 1 cell wide at most; thallus irregularly palmately branched; dioicous
Riccardia palmata