{"refrec":{"BRefID":142179,"RR":"<b>Balech, E.; Tangen, K.</b> (1985). Morphology and taxonomy of toxic species in the <i>Tamarensis</i> group (Dinophyceae): <i>Alexandrium excavatum</i> (Braarud) comb. nov. and <i>Alexandrium ostenfeldii</i> (Paulsen) comb. nov. <i>Sarsia 70(4)</i>: 333-343. <a href=\"http://dx.doi.org/10.1080/00364827.1985.10419687\" target=\"_blank\">http://dx.doi.org/10.1080/00364827.1985.10419687</a>","BEntID":135418,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":null,"RefStringPartII":" <i>Sarsia 70(4)</i>: 333-343. <a href=\"http://dx.doi.org/10.1080/00364827.1985.10419687\" target=\"_blank\">http://dx.doi.org/10.1080/00364827.1985.10419687</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Balech, E.; Tangen, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Balech, E.; Tangen, K.","Englishabstract":"Using light microscopy and scanning electron microscopy the thecal and internal morphology of two taxa within the <i>Gonyaulax tamarensis</i> complex were investigated based on material collected in Oslofjorden, Norway. Combined with Braarud's unpublished information on his type material the observations indicate that the taxa are identical with Gonyaulax tamarensis LEBOUR var. <i>excavata</i> BRAARUD and <i>G. tamarensis</i> var. <i>globosa</i> BRAARUD which were described from Oslofjorden. Based on observations on infraspecific variations it is proposed that the genus concept of <i>Alexandrium</i> HALIM is extended to include species with direct contact between the plates Po and 1' and the new combinations <i>Alexandrium excavatum</i> (Braarud) comb. nov. and <i>Alexandrium ostenfeldii</i> (Paulsen) comb. nov. are proposed. Their plate formula is: Po, 4', 6 lambda-bar , 6C, 9-10S, 5''', 2'''' which includes one or two small accessory sulcal plates. Both species have a characteristic tabulation including a ventral pore. <i>A. excavatum</i> and probably <i>A. ostenfeldii</i> produce paralyzing shellfish toxins. New combinations for the related species <i>Alexandrium peruvianum</i> (BALECH & MENDIOLA) comb. nov. and <i>Alexandrium depressum</i> (GAARDER) comb. nov. are proposed. 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University of Bergen. Universitetsforlaget: Bergen.  ISSN 0036-4827; e-ISSN 1503-1128","StandardTitleSer":"Sarsia","ISSN":"0036-4827","AbbrevSer":"Sarsia","StandardTitleMon":null,"StartPage":333,"Pages":11,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":{"Line1":"Av. A. 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