Collins, Holden & Setchell, Phycoth. Bor.-Amer.
Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]

University Herbarium, University of California, Berkeley
Catalog #: UC1819603
R. Hartshone #1995 00 May 1913
Actinastrum hantzschii Lagerheim
United States, Massachusetts, Middlesex, Alewive Brook, Winchester. Ralph Hartshorn.

Brown University - Algae
Catalog #: ABRU00004787
R. Hartshorn s.n.
Actinastrum hantzschii Lagerheim
United States, Massachusetts, Alewife Brook, Winchester, MA

Yale University Herbarium
Catalog #: YU.095253
Ralph Hartshorn s.n. 00 May 1913
Actinastrum hantzschii Lagerheim
United States, Massachusetts, Winchester; Alewife Brook, Winchester, MA

University of Michigan
Catalog #: 678098
Ralph Hartshorn #s.n. 00 May 1913
Actinastrum hantschii
United States, Massachusetts, Middlesex, Alewive Brook, Winchester

University of Michigan
Catalog #: 678099
Ralph Hartshorn #s.n. 00 May 1913
Actinastrum hantschii
United States, Massachusetts, Middlesex, Alewive Brook, Winchester

Michigan State University Algae
Catalog #: MSC0181064
Ralph Hartshorn #s.n. 00 May 1913
Actinastrum hantzschii Lagerheim
United States, Massachusetts, Middlesex, Alewive Brook, Winchester

Miami University - Algae
Catalog #: 000196633
Ralph Hartshorn #s.n. 00 May 1913
Actinastrum hantzschii Lagerheim
United States, Massachusetts, Middlesex, Alewive Brook, Winchester