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

Brown University - Algae
Catalog #: ABRU00003979
J. E. Humphrey s.n.
Scytonema hofmannii C.Agardh ex Bornet & Flahault
Jamaica, Bath, Jamaica

Michigan State University Algae
Catalog #: MSC0184650
J.E. Humphrey #s.n.
Scytonema hofmannii C.Agardh ex Bornet & Flahault
Jamaica, Bath

Miami University - Algae
Catalog #: 000188254
J.E. Humphrey #s.n. 22 August 2015
Scytonema hofmannii C.Agardh ex Bornet & Flahault
Jamaica, Bath

Yale University Herbarium
Catalog #: YU.094284
James Ellis Humphrey s.n.
Scytonema hofmannii C.Agardh ex Bornet & Flahault
Jamaica, Bath, Jamaica