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

Brown University
Catalog #: ABRU00003734
F. S. Collins s.n.
Hecatonema maculans f. soluta F.S.Collins
United States, Maine, Hancock, Brooksville; Spectacle Island, Penobscot Bay, ME

Yale University Herbarium
Catalog #: YU.106593
Frank Shipley Collins s.n. 00 July 1898
Hecatonema maculans (F.S.Collins) Sauvageau
United States of America, Maine, Hancock, Brooksville; Spectacle Island, Penobscot Bay, ME