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

Brown University - Algae
Catalog #: ABRU00004539
W. J. V. Osterhout s.n. 03 November 1907
Zygnema cruciatum (Vaucher) C.Agardh
United States, California, near Lake Temescal, Berkeley, CA

University of Michigan
Catalog #: 736765
W.J.V. Osterhout #s.n. 03 November 1907
Zygnema cruciatum f. leiosporum Collins
United States, California, Alameda, Pool near Lake Temescal, Berkeley

University of Michigan
Catalog #: 736769
W.J.V. Osterhout #s.n. 03 November 1907
Zygnema cruciatum f. leiosporum Collins
United States, California, Alameda, Pool near Lake Temescal, Berkeley

Michigan State University Algae
Catalog #: MSC0185308
W.J.V. Osterhout #s.n. 03 November 1907
Zygnema cruciatum f. leiosporum Collins
United States, California, Alameda, Pool near Lake Temescal, Berkeley

Miami University - Algae
Catalog #: 000189142
W.J.V. Osterhout #s.n. 03 November 1907
Zygnema cruciatum f. leiosporum Collins
United States, California, Alameda, Pool near Lake Temescal, Berkeley

Yale University Herbarium
Catalog #: YU.095010
Winthrop John Vanleuven Osterhout s.n. 03 November 1907
Zygnema cruciatum (Vaucher) C.Agardh
United States, California, Berkeley; near Lake Temescal, Berkeley, CA