Guide to Liverworts of Oregon: Riccia californica Austin
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Riccia 1 terrestrial > Riccia 2a marginal projections present > Riccia 3b marginal cilia only > Riccia 4b spines scattered > Riccia californica
Synonym: none
Special Status: ORBIC 3.
Recognition: Thallus with marginal cilia only; cilia sometimes absent or very poorly developed in moist sites (Doyle and Stotler 2006); antheridial ostioles not sticking up above surface of thallus.
Distribution: On soil; SW Oregon, California.
Comments: Doyle and Stotler (2006) suggest this species is found in California but not Oregon. Occurrence of this species in Oregon was positively established only recently.
Riccia californica, Plate 89, Howe 1899.
Riccia californica, Rogue River, Curry County, Oregon. DHW m2981.
Riccia californica. Spores in distal aspect, proximal aspect, and lateral view. Rogue River, Curry County, Oregon. DHW m2981.
Riccia californica, Whistlers Bend, Umpqua River, Douglas County, Oregon. DHW 7679.
Riccia californica. Distal Aspect. University of California, Santa Cruz campus, Santa Cruz County, California. W. Doyle 1973 (UC).
Riccia californica. Proximal Aspect. University of California, Santa Cruz campus, Santa Cruz County, California. W. Doyle 1973 (UC).
Riccia californica. Side View. University of California, Santa Cruz campus, Santa Cruz County, California. W. Doyle 1973 (UC).