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

Field Museum of Natural History
Catalog #: C0544451F
W. J. V Osterhout #s.n. 04 August 1906
Nitella clavata Kützing
United States, California, Marin, Lake Lagunitas

Brown University - Algae
Catalog #: ABRU00004111
W. J. V. Osterhout s.n. 04 August 1906
Nitella clavata Kützing
United States, California, Marin, Lake Lagunita, CA

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00141969
ae296bb9-2883-424b-8da5-8612cc4a1eaf
W. J. V. Osterhout; N. L. Gardner #s.n. 04 August 1906
Nitella clavata K
United States, California, Marin, Lake Lagunita, CA

University of Michigan
Catalog #: 677436
W.J.V. Osterhout #s.n. 04 August 1906
Nitella clavata Kützing
United States, California, Marin, Lake Lagunita

University of Michigan
Catalog #: 677438
W.J.V. Osterhout #s.n. 04 August 1906
Nitella clavata Kützing
United States, California, Marin, Lake Lagunita

Michigan State University Algae
Catalog #: MSC0183637
W.J.V. Osterhout #s.n. 04 August 1906
Nitella clavata Kützing
United States, California, Marin, Lake Lagunita

Miami University - Algae
Catalog #: 000188451
W.J.V. Osterhout #s.n.
Nitella clavata Kützing
United States, California, Marin, Lake Lagunita

Yale University Herbarium
Catalog #: YU.094419
Winthrop John Vanleuven Osterhout s.n. 04 August 1906
Nitella clavata Kützing
United States, California, Marin, Lake Lagunita, CA