- Cephaloziella welwitschii, Cephalozia welwitschii
- Frullania ericoides, Jungermannia ericoides Nees;Jungermannia squarrosa Reinw, Blume & Nees;Frullania squarrosa Reinw, Blume & Nees Nees;Jungermannia squarrosa Reiw, Blume & Nees, 1824;Jungermannia tuberculata Lehm & Lindenb, 1834;Frullania aeolotis_squarrosa Mont & Nees,1838-42;Frullania squarrosa_ericoides Schiffn, 1899;F symmetrica Steph, 1908;F variabilis Steph, 1910;Frullania aeolotis Mont & Nees;Frullania armatistipula;Frullania bangiensis;Frullania biroana;Frullania dupuisana;Frullania fauriana Steph in Rechinger 1910, non Steph 1894;Frullania fleischeri;Frullania hamatirostra;Frullania laciniosa;Frullania lanigera;Frullania luzonensis;Frullania novopommeriensis;Frullania sehnemii;Frullania setulosa St;Frullania squarrosa fo ericoides;Frullania squarrosa var verrucosa;Frullania squarrosa;Frullania symmetrica;Frullania tatanarivensis;Frullania usagara;Frullania welwitschii;Jungermannia ericoides;Jungermannia tuberculata
- Riccia membranacea, Riccia amazonica;Riccia echinatispora;Riccia lanigera;Riccia welwitschii;Ricciella welwitschii
- Wolffiella welwitschii, Pond bogmat;Wolffiopsis welwitschii;Wolffia welwitschii
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