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Name derivation:
After Henry Grinnell, American botanist from New York.
Classification:
Grinnellia Harvey 2853; 2 of 3 species descriptions are currently accepted taxonomically (Guiry and Guiry 2016). Subclass Florideophyceae; Order Ceramiales; Family Delesseriaceae
Morphology:
Large monostromatic membranous thallus with short stipes attached with discoid holdfasts. Obviouis midribs near the bas, inconspicuous above (Dawes and Mathieson 2008).
Similar genera:
Basonym of G. americana: Delesseria americana. C. Agardh 1822.
Habitat:
Temperate to subtropical coasts, uncommon (Ibid.).
References:
Dawes, C.J. and A.C. Mathieson 2008. Seaweeds of Florida. University Press of Florida (592 pp). Guiry, M.D. and G.M. Guiry 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 30 May 2014. Harvey, W.H. 1853. Nereis boreali-americana; or, contributions towards a history of the marine algae of the atlantic and pacific coasts of North America. Part II. Rhodospermeae. Smithsonian Contributions to Knowledge 5(5): [i-ii], [1]-258, pls XIII-XXXVI.