Riccardia is not a valid species
Did you mean one of the species from the following list?
Riccardia aequicellularis - 32 collection objects
Riccardia argentolimbata - 1 collection objects
Riccardia bipinnatifida - 3 collection objects
Riccardia cochleata - 7 collection objects
Riccardia colensoi - 4 collection objects
Riccardia crassa - 22 collection objects
Riccardia eriocaula - 3 collection objects
Riccardia graeffei - 1 collection objects
Riccardia lobulata - 12 collection objects
Riccardia macdonaldiana - 1 collection objects
Riccardia nitida - 3 collection objects