• Riccia Linnaeus, 1753 [Family: Ricciaceae]
• Riccia Travassos, 1953 [Family: Erebidae]
• Riccia albida Sull.
• Riccia aliafia Druce, 1890
• Riccia arvensis Aust. accepted as Riccia bifurca Hoffm. Us
• Riccia auriformis With. accepted as Collema auriforme (With.) Coppins & J.R. Laundon, 1984
• Riccia austini Steph.
• Riccia beyrichiana Hempe Ex Lehm.
• Riccia bifurca Hoffm. Us
• Riccia californica Aust.
• Riccia campbelliana M.A. Howe
• Riccia canaliculata Hoffm.
• Riccia cavernosa Hoffm.
• Riccia crystallina accepted as Riccia cavernosa Hoffm.
• Riccia curtisii (Aust.) James
• Riccia dictyospora M.A. Howe
• Riccia donnellii Aust.
• Riccia duplex Lorbeer accepted as Riccia canaliculata Hoffm.
• Riccia eldeeniae Jacobs
• Riccia fluitans
• Riccia frostii Aust.
• Riccia glauca Linnaeus
• Riccia hirta (Aust.) Underw.
• Riccia huebenerana Auct. Amer. accepted as Riccia sullivantii Aust.
• Riccia macallisteri M.A. Howe
• Riccia membranacea Gott. & Lindenb.
• Riccia nigrella De Candolle
• Riccia ozarkiana Mc Gregor
• Riccia rhenana Lorbeer accepted as Riccia fluitans
• Riccia sorocarpa Bisch.
• Riccia sullivantii Aust.
• Riccia tenella Jacobs
• Riccia trichocarpa M.A. Howe
• Riccia violacea M.A. Howe
• Ricciaceae
• Ricciaesporites E. Nagy, 1968 †