Devaleraea, A New Genus of the Palmariaceae (Rhodophyta) in the North Atlantic and North Pacific

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Abstract
INTRODUCTIONThe family Palmariaceae Guiry (Palmariales: Rhodophyta) at present includes the generaPalmariaStackhouse (the holotype genus: see Guiry, 1974, p. 523),HalosacdonKiitzing,LeptosarcaA. & E. S. Gepp andNeohalosacdocolaxI. K. Lee & Kurogi.HalosacdonandLeptosarcawere included in the original description of the family (Guiry, 1974) andNeohalosacdocolaxwas recently described by Lee & Kurogi (1978) for a small parasite onHalosacdon minjaiiI. K. Lee from the Aleutian Islands. The structure and reproduction ofNeohalosacdocolaxmake it quite clear that its affinities lie with the Palmariaceae (Lee & Kurogi, 1978). The Palmariaceae of the island of Hokkaido (northern Japan) have been the subject of a recent study (Lee, 1978) and the details of structure and reproduction given for the northwestern Pacific species ofPalmariaandHalosacdonconfirm that the unusual structure and mode of reproduction described by Guiry (1974, 1975, 1978) for Atlantic and northeastern Pacific representatives of these genera are also found in the northwestern Pacific representatives (see also Lee, 1977a).