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

Field Museum of Natural History
Catalog #: C0506910F
F. W. Hooper #s.n.
Eucheuma isiforme (C.Agardh) J.Agardh
United States, Florida, Key West

Brown University - Algae
Catalog #: ABRU00002539
I. Holden s.n. 07 October 1892
Calothrix parietina Thuret ex Bornet & Flahault
United States, Connecticut, Pequonnock River, Bridgeport, CT

Miami University - Algae
Catalog #: 000186411
I. Holden #s.n. 07 October 1892
Calothrix parietina Thuret ex Bornet & Flahault
United States, Connecticut, Fairfield, Pequinnock River, Bridgeport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00233312
aa7ccf65-7d8f-48a2-8b19-15e2e0908582
I. Holden #s.n. 07 October 1892
Calothrix parietina Thuret ex Bornet & Flahault
United States, Connecticut, Pequonnock River, Bridgeport

Yale University Herbarium
Catalog #: YU.091091
Isaac Holden s.n. 07 October 1892
Calothrix parietina Thuret ex Bornet & Flahault
United States, Connecticut, Bridgeport; Pequonnock River, Bridgeport, CT

Michigan State University Algae
Catalog #: MSC0181521
Isaac Holden #s.n. 07 October 1892
Calothrix parietina Thuret ex Bornet & Flahault
United States, Connecticut, Fairfield, Pequinnock River, Bridgeport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00223995
05cff1b4-c816-4ec7-8741-d07a0cd080e0
Ms. S. P. Monks #s.n.
Egregia laevigata Setchell
United States, California, Los Angeles, San Pedro