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

University of North Carolina at Chapel Hill Herbarium; Max & Fran Hommersand Algae Herbarium: Algae
Catalog #: NCU-A-0022216
Howe, Marshall A. #s.n.
Penicillus lamourouxii var. gracilis A.Gepp & E.S.Gepp
Bahamas, the Bahamas

Brown University - Algae
Catalog #: ABRU00004216
M. A. Howe s.n. 18 December 1907
Penicillus lamourouxii Decaisne
Bahamas, Fort George Cay, Caicos Islands, Bahamas

Field Museum of Natural History
Catalog #: C0532743F
Marshall A. Howe s.n. 18 December 1907
Penicillus lamourouxii Decaisne
Turks and Caicos Islands, British West Indies: Caicos Islands, Fort George Cay

Yale University Herbarium
Catalog #: YU.094523
Marshall A. Howe s.n. 18 December 1907
Penicillus lamourouxii Decaisne
Turks and Caicos Islands, Fort George Cay, Caicos Islands

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00205521
6cd7c8b4-9edd-40d7-bf5f-1e1013fba6a6
Marshall A. Howe #1476 18 December 1907
Penicillus lamourouxii Decaisne
Bahamas, Fort George Cay, Caicos Islands; 21.892166 -72.093278

University of Michigan
Catalog #: 731012
Marshall A. Howe #s.n. 18 December 1907
Penicillus lamourouxii var. gracilis A.Gepp & E.S.Gepp
Turks and Caicos Islands, Fort George Cay, Caicos Islands

University of Michigan
Catalog #: 731034
Marshall A. Howe #s.n. 18 December 1907
Penicillus lamourouxii var. gracilis A.Gepp & E.S.Gepp
Turks and Caicos Islands, Fort George Cay, Caicos Islands

Michigan State University Algae
Catalog #: MSC0183962
Marshall A. Howe #s.n. 18 December 1907
Penicillus lamourouxii var. gracilis A.Gepp & E.S.Gepp
Turks and Caicos Islands, Fort George Cay, Caicos Islands

Miami University - Algae
Catalog #: 000188551
Marshall A. Howe #s.n.
Penicillus lamourouxii f. gracilis
Turks and Caicos Islands, Fort George Cay, Caicos Islands