2 TSUDA 



were heterocystous blue-greens studied by Wiebe et al. Enewetak Atoll: Cyanophyta (16 species), Chlorophyta (89 



(1975), Webb and Wiebe (1975), Webb et al. (1975), and species), Phaeophyta (24 species), and Rhodophyta (109 



Wiebe (1976) in their studies on the nitrogen cycle. species). Nine of the species (preceded by a dagger in 



On the basis of the papers cited above, 238 species Table 1) were described as new with the Enewetak speci- 



(106 genera) of marine benthic algae are known from mens serving as holotypes. It is interesting to note that 40 



TABLE 1 

 Checklist of Marine Benthic Algae of Enewetak 



Division CYANOPHYTA (blue-green algae) 

 Class CYANOPHYCEAE 

 Order CHROOCOCCALES 



Family CHAMAESIPHONACEAE 



Entopbf^salis conferta (Kijtz.) Dr. and Daily: Dawson, 1957. 



Entopfiysa/is deusta (Menegh.) Dr. and Daily: Drouet and Daily, 1956; Dawson, 1957. 

 Family CHROOCOCCACEAE 



Anac^stis dimidiata (Kutz.) Dr. and Daily: Dawson, 1957. 

 Coccochhris stagnina Sprengel: Dawson, 1957. 



Gomphosphaeria aponina Kiitz.: Taylor, 1950b; Drouet and Daily, 1956; Dawson, 1957. 

 Order OSCILLATORIALES 

 Family NOSTOCACEAE 



Cahthrix Crustacea Schousboe and Thuret: Dawson, 1957; Bakus, 1967; Drouet, 1973; Webb et al., 1975; 

 Webb and Wiebe, 1975; Wiebe et al., 1975; Wiebe, 1976. 



Rivuhria atra Roth: Dawson, 1957. 



Rivularia polvotis (J. Ag.) B. and Fl.: Dawson, 1957. 

 Hormotharinnion enteromorphoides B. and Fl.: Taylor, 1950b: Dawson, 1957; Gilmartin, 1960; Webb et al., 1975; 

 Wiebe et al, 1975. 



Sci/tonema hofmanii Ag. 



Sciitonema mi/oci^rous (Dillw.) C. Ag.: Dawson, 1957. 

 Sciitonema poli^cvstum B. and Fl.: Dawson, 1957; Gilmartin, 1960. 

 Family OSCILLATORIACEAE 



Microcoleus /yngbyacpus (Kiitz.) Crouan. 



Hf^drocoleum cantharidosmum (Mont.) Gomont: Taylor, 1950b. 



Hf^drocoleum coccineum Gomont: Dawson, 1957. 



Hiidrocoleum cowoides (Harv.) Gomont: Dawson, 1957; Gilmartin, 1960. 



Hvdrocoleum glutinosum (C. Ag.) Gomont: Dawson, 1957; Gilmartin, 1960. 



Hvdrocoleum li/ngbvaceum Kiitz.: Dawson, 1957. 



Li^ngbya aestuarii (Mert.) Lyngb.: Dawson, 1957. 



L^/ngbva conferuoides C. Ag.: Taylor, 1950b; Dawson, 1957. 



Lvngbva majuscuta (Dillw ) Harv.: Dawson, 1957; Gilmartin, 1960. 



L\;ngbva meneghiniana (Kiitz.) Gomont: Taylor, 1950b; Dawson, 1957. 



Lvngbya semiplena (Ag.) J. Ag.: Dawson, 1957. 

 Oscilhtoha subrnembranacea Ard. and Straff: Drouet, 1968. 



Phormidium penicillatum Gomont: Dawson, 1957. 

 Porpfiyrosiphon notarisii (Menegh) Kiitz, 



Oscillatoria nigro-viridis Thw.: Dawson, 1957. 

 Schizothrix arenaria (Berkeley) Gomont. 



Svmploca laete-mndis Gomont: Dawson, 1957; Gilmartin, 1960. 

 Schizothrix calcicola (C. Ag.) Gomont: Bakus, 1967; Drouet, 1968; Johannes et al, 1972; Webb and Wiebe, 1975. 



Phormidium crosbyanum Tilden: Taylor, 1950b; Dawson, 1957. 



Plectonema nostocorum Bornet: Taylor, 1950b; Dawson, 1957. 



Plectonema terebrans B. and Fl.: Dawson, 1957. 



Schizothrix lacustris A. Br.: Dawson, 1957 

 Schizothrix mexicar^a Gomont: Drouet, 1968. 



Lyngbj/a gracilis (Menegh.) Rabenh : Taylor, 1950b; Dawson, 1957 



Lvngbva sordida (Zanard.) Gomont: Dawson, 1957; Gilmartin, 1960. 



Si/mploca h\!dnoides (Harv ) Kiitz: Dawson, 1957; Gilmartin, 1960. 

 Schizothrix tenerrima (Gomont) Dr : Drouet, 1968. 



Microcoleus tenerrimus Gomont: Dawson, 1957. 

 Spirulina subsalsa Oersted: Dawson, 1957. 



Spirulina major Kiitz.: Dawson, 1957. 



Spirulina tenerrima Kiitz.: Dawson, 1957. (This table continued on next page.) 



