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

Brown University - Algae
Catalog #: ABRU00003598
N. L. Gardner s.n.
Urospora wormskioldii (Mertens ex Hornemann) Rosenvinge
United States, Washington, west coast of Whidbey Island, WA

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00213715
e700d89c-eb22-497f-930b-2e7d40ce619c
N. L. Gardner #s.n. 00 June 1900
Urospora Areschoug, 1866
United States, Washington, Island, West coast of Whidbey Island

University of Michigan
Catalog #: 735431
N.L. Gardner #s.n. 00 March 1900
Urospora wormskioldii (Mertens ex Hornemann) Rosenvinge
United States, Washington, Island, Whidbey Island

University of Michigan
Catalog #: 735438
N.L. Gardner #s.n. 00 March 1900
Urospora wormskioldii (Mertens ex Hornemann) Rosenvinge
United States, Washington, Island, Whidbey Island

Michigan State University Algae
Catalog #: MSC0185222
N.L. Gardner #s.n. 00 June 1900
Urospora wormskioldii (Mertens ex Hornemann) Rosenvinge
United States, Washington, Island, West coast of Whidbey Island

Miami University - Algae
Catalog #: 000187577
N.L. Gardner #s.n. 00 March 1900
Urospora wormskioldii (Mertens ex Hornemann) Rosenvinge
United States, Washington, Island, Whidbey Island

Yale University Herbarium
Catalog #: YU.091998
Nathaniel Lyon Gardner s.n.
Urospora wormskioldii (Mertens ex Hornemann) Rosenvinge
United States, Washington, Island, west coast of Whidbey Island, WA