, Volume 28, Issue 3, pp 321-370

First online:

The genera Lithothamnium, Leptophytum (nov. gen.) and Phymatolithon in the Gulf of Maine

  • Walter H. AdeyAffiliated withDivision of Paleobotany, Smithsonian Institution

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This paper is the fourth of a series covering the crustose corallines of the Gulf of Maine. Information on anatomy, cytology and the development of the reproductive structures is presented to show that Lithothamnium and Leptophytum (new genus) are distinct from Clathromorphum and Phymatolithon. An additional species, P. lenormandi, is placed in Phymatolithon. The reproductive patterns and geographic and bathymetric distributions of the five species involved are presented and discussed.