Riccia is not a valid species
Did you mean one of the species from the following list?
Riccia albida - 18 collection objects
Riccia areolata - 2 collection objects
Riccia asprella - 6 collection objects
Riccia bifurca - 19 collection objects
Riccia billardierei - 2 collection objects
Riccia blackii - 1 collection objects
Riccia cartilaginosa - 2 collection objects
Riccia cavernosa - 13 collection objects
Riccia collata - 1 collection objects
Riccia crinita - 28 collection objects
Riccia crozalsii - 15 collection objects
Riccia crystallina - 19 collection objects
Riccia deserticola - 4 collection objects
Riccia duplex - 12 collection objects
Riccia fluitans - 1 collection objects
Riccia gangetica - 2 collection objects
Riccia junghuhniana - 1 collection objects
Riccia lamellosa - 28 collection objects