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

Brown University - Algae
Catalog #: ABRU00005263
N. L. Gardner s.n.
Gigartina spinosa var. pinnata Setchell
United States, California, Los Angeles, Los Angeles; San Pedro, CA

University of Michigan
Catalog #: 654751
N.L. Gardner #s.n. 00 December 1908
Gigartina skottsbergii Setchell & N.L.Gardner
United States, California, Los Angeles, San Pedro

Miami University - Algae
Catalog #: 000210748
N.L. Gardner #s.n. 00 December 1908
Chondracanthus spinosus (Kützing) Guiry
United States, California, Los Angeles, San Pedro