Guide to Liverworts of Oregon: Riccardia palmata (Hedw.) Carruth.
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Riccardia 1b oil bodies present in many cells > Riccardia 2b oil bodies absent from most epidermal cells > Riccardia 3b unistratose margin 1 cell wide or absent > Riccardia palmata
Synonym: None.
Special Status: None.
Recognition: A small, thalloid liverwort with finger like lobes very similar to Riccardia latifrons. From this it differs in having oil bodies in most of its cells. Also, the lobes in this are narrower and longer.
Distribution: Grows on rotting wood pretty exclusively; in wet lowlands west of the Cascades.
Comments: As likely overlooked as rare.
2 X 4 Creek, Coos Co., Oregon. DHW 9369.
Marys Peak, Benton Co., Oregon. DHW m2462.
Marys Peak, Benton Co., Oregon. DHW m2462.
Oil bodies in surface cells. Marys Peak, Benton Co., Oregon. DHW m2462.
Gemmae. Marys Peak, Benton Co., Oregon. DHW m2462.
2 X 4 Creek, Coos Co., Oregon. DHW 9369.
Jack Creek, Jefferson Co., Oregon. DHW 7415.