310 



Minnesota Algae 



crustaceum Ag. (Scytonema) 212, 226 

 var. incrustans (Kuetz.) Born, and 



Flah. 226 

 crustaceus Kuetz. (Symphyosiphon) 



226 

 crustifprmis Naeg. (Schizosiphon) 



269 

 cryptarum Farl. (Chroothece ?) 12 

 Cryptoglena Ehr. 297 

 Cryptoglenaceae 297 

 cupressophila Wolle (Anabaena) 184, 



187, 195 

 curtus Setchell (Synechococcus) 11 

 curvatus Nordst. (Chamaesiphon) 55, 



S6 

 curviceps Ag. (Oscillatoria) 59, 67 

 cuspidata W. and G. S. West (Sym- 



ploca) 14s 

 cuspidata (Symploca) 203 

 cuspidatum (.W. and G. S. West) De 



Toni (Symplocastrum) 144, 145 

 var. luteo-fusca W. and G. S. West 



145 

 cuticulare (Breb.) Born, and Flah. 



(Nostoc) 161, 164 

 cyanea Crouan (Lyngbya) iig 

 cyanescens Crouan (Scytonema) 222 

 Cyanophyceae i 



cycadearum Reinke (Anabaena) 164 

 Cylindrospermum Kuetz. 161, 197 

 cystifera (Hass.) Rab. (Gloeothece) 



26 



Dasygloea Thwaites 58, 154 

 decorticans A. Br. (Chroococcus) 4, 8 

 densum (A. Br.) Born. (Scytonema) 



212, 227 

 depressum Wood (Nostoc) 163, 177 

 Dermocarpa Crouan 46, 52 

 Desmonema Berk, and Thwaites 206, 



detersa Stiz. (Oscillaria) 98 

 Dichothrix Zanard. 252, 274 

 diffusa Farlow (Oscillaria) 61 

 digueti Gom. (Lyngbya) 109, iis 

 dillwynii Hass. (Calothrix) 23s 

 Diplocolon Naeg. 206, 236 

 distincta (Nordst.) Schmidle (Lyng- 

 bya) 109, 113 

 distorta (Hofman-Bang) Kuet^. (To- 



lypothrix) 229, 231 

 distorta var. Wood (Tolypothrix) 230 

 donnellii (Wolle) (Calothrix) 256, 271 

 donnellii Wolle (Mastigonema) 271 

 donnellii Wolle (Microcystis) 33, 34 

 dubia Wartm. (Gloeocapsa) 15, 23 

 dubia (Naeg.) Gom. (Symploca) 129, 



.131 

 dubium Grun. (Coelosphaerium) 39, 



40 

 dubium Wood (Scytonema) 212, 227 



duplex Wolle (Spirulina) 87, 90 

 dura Roth (Rivularia) 283, 291 



echinata Eng. Bot. (Rivularia) 284 



echinulata (Smith) Born, and Flah. 

 (Rivularia) 283, 286 



elabens (Menegh.) Kuetz. (Microcys- 

 tis) 33. 35 



elabens Kuetz. (Polycystis) 35 



elachista W. and G. S. West (Aphano- 

 capsa) 27, 28 



elegans (Chauv.) Zanard. (Goniotri- 

 chum) 295 



elegans A. Br. (Merismopedium) 42, 

 43 



elegans Ag. (Oscillatoria) 96 



elegans Kuetz. (Scytonema) 

 var. antillarum Crouan 213 



ellipsosporum (Desm.) Rab. (Nos- 

 toc) 162, 168 



elongatum Wood (Mastigonema) 256, 

 271 



enteromorphoides Grun. (Hormo- 

 thamnion) 205 



Entophysalis Kuetz. 2, 23 



epiphytica West and West (Calo- 

 thrix) 2SS, 26s 



erosa Liebm. (Lyngbya) 124 



erythraeum Ehr. (Trichodesmium) 84 



Eucapsis Clements and Shantz 3, 45 



farlowii Born. (Hormactis) 294 

 fasciculata Ag. (Calothrix) 234, 262 



forma incrustans Collins 262 

 fasciculata (Naeg.) Grun. (Inactis) 



147 

 fasciculata Gom. (Schizothrix) 147, 



148 

 favosum (Bory) Gom. (Phormidium) 



93, 104 

 fenestralis Kuetz. (Gloeocapsa) 13, 



16 

 ferruginea C. Ag. (Lyngbya) 109, 120, 



123 

 ferruginea G. S. West (Lyngbya) 114 

 fertile Wood CMastigojiema) 256, 271 

 fibrosum (Wood) Wolle (Mastigone- 

 ma) 256, 272 

 figuratum Ag. (Scytonema) 223 

 Fischerella (Born, and Flah.) Gom. 



237, 242 



flaccida Crouan (Leibleinia) 261 

 flaccida Kuetz. (Tolypothrix) 231 

 flavo-viride (Kuetz.) Born, and Flah. 



(Scytonema) 212, 222 

 flexuosum Rab. (Cylindrospermum) 



193 

 flexuosus Borzi (Hapalosiphon) 238 

 flos-aquae (Lyngb.) Breb. (Anabae- 

 na) 186, 189 



