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

Brown University - Algae
Catalog #: ABRU00003023
C. H. Clarke s.n.
Chaetomorpha melagonium (F.Weber & Mohr) Kützing
United States, Massachusetts, Magnolia, MA

University of Michigan
Catalog #: 683413
C.H. Clarke #s.n. 00 July 1897
Chaetomorpha melagonium f. rupincola
United States, Massachusetts, Essex, Magnolia

University of Michigan
Catalog #: 683418
C.H. Clarke #s.n. 00 July 1897
Chaetomorpha melagonium f. rupinicola Kjellman
United States, Massachusetts, Essex, Magnolia

Michigan State University Algae
Catalog #: MSC0181677
C.H. Clarke #s.n. 00 July 1897
Chaetomorpha melagonium (F.Weber & Mohr) Kützing
United States, Massachusetts, Essex, Magnolia

Miami University - Algae
Catalog #: 000186827
C.H. Clarke #s.n. 00 July 1897
Chaetomorpha melagonium (F.Weber & Mohr) Kützing
United States, Massachusetts, Essex, Magnolia

Yale University Herbarium
Catalog #: YU.091495
Cora Huidekoper Clarke s.n. 00 July 1897
Chaetomorpha melagonium (F.Weber & Mohr) Kützing
United States, Massachusetts, Essex, Gloucester; Magnolia, MA

Field Museum of Natural History
Catalog #: C0528596F
Miss C. H. Clarke #s.n. 00 July 1897
Chaetomorpha melagonium (F.Weber & Mohr) Kützing
United States, Massachusetts, Essex, Magnolia