Ulva rigida C.Agardh
Annotated by J. Cruden.

Oregon: Tillamook: Tillamook Bay, North Jetty, north side.
45.570599° N, 123.962571° W,
Datum: WGS 84. Coordinate Source: Digital Map.
Upper intertidal on rocks but below Blidigia. Associated with Porphyra perforata. Exposed to wave, sand and partial sun.; rock. HerbariumSpecimenDuplicate: Microcladia borealis | herbariumSpecimenDuplicate: Polysiphonia hendryi var. hendryi Https://oregonflora.org/collections/individual/index.php?occid=4681594.

J. Cruden 50-J, 1978-6-26
OSC, Catalog: OSC-A-010817