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

Brown University - Algae
Catalog #: ABRU00002541
I. Holden s.n.
Monostroma latissimum Wittrock
United States, Connecticut, Stratford, CT

Field Museum of Natural History
Catalog #: C0526567F
I. Holden #s.n. 00 April 1891
Monostroma latissimum Wittrock
United States, Connecticut, Fairfield, Stratford

Miami University - Algae
Catalog #: 000186413
I. Holden #s.n. 00 April 1891
Monosroma latissimum
United States, Connecticut, Fairfield, Stratford

Yale University Herbarium
Catalog #: YU.091093
Isaac Holden s.n. 00 April 1891
Monostroma latissimum Wittrock
United States, Connecticut, Stratford, CT

University Herbarium, University of California, Berkeley
Catalog #: UC1856591
Isaac Holden #s.n. 00 April 1891
Monostroma latissimum Wittrock
United States, Connecticut, Fairfield, Stratford

University of Michigan
Catalog #: 728123
Isaac Holden #s.n. 00 April 1891
Gayralia oxysperma (Kützing) K.L.Vinogradova ex Scagel et al.
United States, Connecticut, Fairfield, Stratford

University of Michigan
Catalog #: 728157
Isaac Holden #s.n. 00 April 1891
Gayralia oxysperma (Kützing) K.L.Vinogradova ex Scagel et al.
United States, Connecticut, Fairfield, Stratford

Michigan State University Algae
Catalog #: MSC0183543
Isaac Holden #s.n. 00 April 1891
Monostroma latissimum Wittrock
United States, Connecticut, Fairfield, Stratford

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00205452
2e51c459-ac6f-456d-b8cd-00fa2e1721e6
Isaac Holden #s.n. 00 April 1891
Monostroma latissimum Wittrock
United States, Connecticut, Fairfield, Stratford