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

Brown University - Algae
Catalog #: ABRU00004770
C. Bullard s.n. 08 August 1912
Cosmarium porteanum W.Archer
United States, New Hampshire, Robertson's Pool, Chocorua, NH

Yale University Herbarium
Catalog #: YU.095237
Charles Bullard s.n. 08 August 1912
Cosmarium porteanum W.Archer
United States, New Hampshire, Carroll, Tamworth; Robertson's Pool, Chocorua, NH

University of Michigan
Catalog #: 736156
Charles Bullard #s.n. 08 August 1912
Cosmarium porteanum W.Archer
United States, New Hampshire, Carroll, Robertson's Pool, Chocorua

University of Michigan
Catalog #: 736157
Charles Bullard #s.n. 08 August 1912
Cosmarium porteanum W.Archer
United States, New Hampshire, Carroll, Robertson's Pool, Chocorua

Michigan State University Algae
Catalog #: MSC0182221
Charles Bullard #s.n. 08 August 1912
Cosmarium portianum W.Archer
United States, New Hampshire, Carroll, Robertson's Pool, Chocorua

Miami University - Algae
Catalog #: 000196617
Charles Bullard #s.n. 08 August 1912
Cosmarium portianum
United States, New Hampshire, Carroll, Robertson's Pool, Chocorua