294 



INDEX. 



rectum, Peniuni, I 212 



- Pleurotsenium, I 212 

 refractum, Staurastrum, V 86 

 Regelianum, Dysphinctium, I 97 

 Regnellii, Cosmarium, III 89 



Ursinella, III 89 

 Regiiesi, Cosmarium, III 36 



var. montanum. Ill 39 



- var. productum. Ill 38 



- var. tritum, III 38 



Didymidium (Cosmarium), III 30 



Sphaerozosma, V 214 

 Ursinella, III 36 



regulare, Closterium, I 122 

 regularis, Arthrodia, I 122 

 Reinschii, Cosmarium, III 12 



- var. eboracense, III 13 



>Staurastrum, V 45, 46 



- Ursinella, III 13 

 reniforme, Cosmarium. Ill 157 



- var. apertum, 111 159 



- var. compressum, III 158 



var. elevatuni, III 159 

 reniformis, Ursinella, III 157 

 repanda, Ursinella, III 53 

 repandum, Cosmarium, III 53 



- f. minor, III 54 



Staurastrum, V 196 

 retusa, Ursinella, III 265 

 retusiforme, Cosmarium, II 180 

 retusum, Cosmarium, IV 91 



- Cosmarium, III 265 



- var. angustatum, III 266 



Euastrum, IV 91 



- (Cosmarium), III 265 



- Staurastrum, IV 160 



- var. boreale, IV 160 



- var. puiictulatum, IV 160 

 rliabdophorum, Staurastrum, IV 129 

 Robinsoniaiium, Xanthidium, IV 83 



- Xanthidium, IV 84 



roseola, Cylindrocystis, I 62 ; V 260 

 Rostaiiiiskii, Cosmarium, 111 251 

 rostellum, Staurastrum, Y 164 



var. erostellum, V 72 

 rostrata, Arthrodia, I 188 



Helierella, II 35 

 rostratum, Closterium, I 188 



- var. brevi rostra turn, 1 189 



- var. Kuetzingii, I 180' 



- var. setaceum, I 190 



var. typicum. I 188 

 Euastrum, II 35 



- var. eumbricum, II 37 

 Rota, Euastrum, II 82, 99 102 

 rotata, Didymidium (Micrasterias), II 



102 

 Echinella, II 102 



rotata, Eutomia, II 102 

 Helierella, II 102 



- Micrasterias, I 8 ; II 102 



- var. acutideiitata, II 102 



- f. evoluta, II 104 



- f. granulata, II 104 



- var. pulchra, II 104 

 var. uriiigera, II 104 



rotundum, Cosmarium, II 139 

 Roya, I 3, 106 ; V 258 

 Royanum, Peiiium, I 88, 89 



- Staurastrum, V 52 

 ruficeps, Closterium, I 130 

 rufescens, Penium, I 99 

 rufopellitum, Penium, I 99 

 rugulosum, Staurastrum, IV 178 



Saccodermae, I 25, 29 

 Sarsii, Staurastrum, IV 102 



- var. longispiiium, IV 95 

 Saxonicum, Cosmocladium, V 198, 202 



- Staurastrum, V 54, 56 



- f. tenue, V 63 

 scabrum, Staurastrum, V 81 

 scandinavicum, Penium, 1 88, 89 

 Scenedesmus, Cosmarium, II 176 



- f. pimctata, II 176 

 Ursinella, II 176 



Sccptruni, Closterium, I 193 

 Docidium, I 208 

 Pleurota?nium, I 208 



var. capitatum, I 209 

 Sdiizacanthum, IV 48 

 Schizodesmus, IV 89 

 Schliephackeana, Ursinella, III 74 

 Schliephackeanum, Cosmarium, III 

 73 



- f. spetsbergensis, II 163 

 scitum, Euastrum, III 259 

 scorpioideum, Staurastrum, var. 



brevis, V 169 

 Scoticum, Closterium, I 161 



- var. fusiforme, I 162 



- Cosmarium. Ill 269 



Sebaldi, Didymidium (Staurastrum), 

 V 166 ' 



- Staurastrum, V 166 



- var. ornatum, V 114, 167 



- var. productum, V 168 

 secodeiis, Sphaerozosma, V 225 



- var. pulchellum. V 227 



- Spoudylosiurn, V 225 

 semiradiata, Micrasterias, II 84 

 semiradiatum, Euastrum, II 84 

 senarium, Desmidium, V 175 



- Staurastrum, V 175 



- var. alpinum, f. tatrica, V 184 

 var. bifarium, V 184 



