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

Brown University - Algae
Catalog #: ABRU00002704
L. N. Johnson s.n. 25 July 1895
Symploca hydnoides (Harvey) Kützing
United States, New York, Cold Spring Harbor, Long Island, NY

Yale University Herbarium
Catalog #: YU.091283
L. N. Johnson s.n. 25 July 1895
Symploca hydnoides (Harvey) Kützing
United States, New York, Suffolk, Huntington; Cold Spring Harbor, Long Island, NY

Field Museum of Natural History
Catalog #: C0576201F
L.N. Johnson #203 25 July 1895
Symploca hydnoides (Harvey) Kützing
United States, New York, Suffolk, Cold Spring Harbor

Michigan State University Algae
Catalog #: MSC0184964
L.N. Johnson #s.n. 25 July 1895
Symploca hydnoides (Harvey) Kützing
United States, New York, Suffolk, Cold Spring Harbor, Long Island

Miami University - Algae
Catalog #: 000186606
L.N. Johnson #s.n. 25 July 1895
Symploca hydnoides (Harvey) Kützing
United States, New York, Suffolk, Cold Spring Harbor, Long Island