Austin, Hepat. Bor.-Amer. Exs.
Coe Finch Austin [1 - 150]

University of Michigan Herbarium
Catalog #: 700266
H. N. Bolander #s. n.
Riccia nigrella DC.
USA, [no data]

Academy of Natural Sciences of Drexel University
Catalog #: PH00145267
H. N. Bolander #s.n.
Riccia natans L.
USA, California; Pennsylvania

Academy of Natural Sciences of Drexel University
Catalog #: PH00145268
H. N. Bolander #s.n.
Riccia natans L.
USA, California; Pennsylvania

University of Wisconsin - Madison
Catalog #: WIS-B-0029969
[Collector unspecified] #s.n.
Riccia nigrella DC.
United States, California; Pennsylvania

Willard Sherman Turrell Herbarium, Miami University
Catalog #: 000258796
[Unspecified] #s.n.
Riccia nigrella DC.
United States, Pennsylvania, California, Bolander; Pennsylvania, Dr. T. C. Parter