Index 



469 



Phyllophix Schmidle, 309 



Phyllosiphoik Kiihn, 139, 212, 222, 2-42, 243, 



421 



P. Alocasise Lagerh., 243 

 P. Arisari Kiihn, 242 (fig. 156), 243 

 P. maximum Lagerh., 243 



P. Philodetidri Lagerh., 243 

 Phyllosiphonacese, 242, 243 

 Phylogeny of Desmids, 376 

 Phymatodocis Nordst., 381 



Ph. irregularis Schmidle, 360 (fig. 224 H) 



Ph. Nordstedtiana Wolle, 360 (fig. 224 E-G) 

 Physocytium Borzi, 185, 405 



P. confervicola Borzi, 184 (fig. 110 D-H) 

 Phythdios Frenzel, 199 

 Phytodiniacese, 57, 80 

 Phytodinium Klebs, 57 

 Phytomorula Kofoid, 453 

 Phylophysa Weber van Bosse, 222, 243, 421 



P. Treubii W. van Bosse, 243, 420 (fig. 266) 

 Pilea (Urticacese), 243, 421 

 Pilidiocystis Bohlin, 200 

 Pilinia Kiitz., 303 

 Pithiscus Dang., 170 



Pithophora Wittr., 250, 259, 262, 263, 265, 

 428, 429 



P. CleveatM Wittr., 263, 264 (fig. 169), 265 



P. kc.we.nsis Wittr., 265 



P. Roettleri Wittr., 265 

 Pithophoracese, 265 

 Placoderrase, 380 

 Play iosper mum Cleve, 338 



P. tenue Cleve, 338 

 Plaiiftonema Schmidle, 287 

 Plankton of pools and lakes, 433-445 

 Planktoniclla Schtitt, 91 

 Planophila Gerneck, 194 

 Planosporaceae, 209-216 

 PLATE, 66 

 Platydorina Kofoid, 176, 178, 180, 182 



PL caudata Kofoid, 179 (fig. 107 A and B), 



446 



Platymotias G. S. West, 453 

 PLAYFAIR, 145 

 Plectonema Thur., 26, 43 



PL capitatum Lemm., 26 

 Pleodorina Shaw, 176, 178, 180, 182, 429 



PL californica Shaw, 176, 178 



PL illinoisensis Kofoid, 169, 176, 178 (fig. 



106), 446, 453 

 Plcurocapsa Thur., 25, 33 

 Pleurococcus vulgaris auct., 191 

 Plearodiscus Lagerh., 343, 347 



PL purpureus (Wolle) Lagerh., 329, 347 (fig. 



216 D) 

 Plcurotsenium Nag., 362, 363, 365, 378, 381 



PI. coronulatum (Grim.) Wille, 356 



PL doliiformeW. & G. S. West, 362 (fig. 227 B) 



PL nodulosum var. coronatum (Breb.) W. & 

 G. S. West, 367 



PL perlongum W. & G. S. West, 356 



PL trochiscum W. & G. S. West, 362 (fig. 



227^4) 



Pleurothamnion Borzi, 301, 303 

 Podolampas Stein, 58, 59, 64 

 Polyblepharidaceje, 164, 165 

 Polyblepharides Dang., 165 



Polychaetophora W. & G. S. West, 207, 208 



Polychlamydum W. & G. S. West, 38, 43 



Polychloris Borzi, 408, 409 



Polycystin, 10 



Polyedrium Nag., 200 



Polyedropsis Schmidle, 200 



Polykrikos Biitschli, 54, 79 



P. Schwarizii Biitschli, 54 (fig. 39), 55 

 Polymorphism, in the Myxophyceae, 30; in 



Mdosira, 106; in the Green Algse, 145 

 Polyphysa Lam., 273 

 Polytoma Ehrenb., 174 



P. uvella Ehrenb., 158, 173 (fig. 102 A-D), 174 

 Porodiscus Grev., 118 



Porphyridium cruentum (Ag.) Nag., 40, 422 

 Porphyrosiphon Kiitz., 38 



P. Notarisii (Menegli.) Kiitz., 31 

 Potamoplankton, 445^47 

 Pouchetia Schiitt, 51, 52 



P. armata Dogiel, 55 

 POWERS, 176, 179 

 Prasinocladus Kuck., 184, 185, 405 



P. lubricm Kuck., 184 (fig. 110 A-C) 

 Prasiola Ag.. 130, 132, 140, 157, 192, 279, 280 



P. crispa (Lightf.) Menegh., 280 (fig. 179 

 D-G), 419 



- f. muralis, 280 (fig. 179 A-C) 

 Prasiolacese, 279 



PRINGSHEIM, 315, 316, 317, 338, 388 

 Pringsheimia Reinke, 298, 299 

 PRINTZ, 407, 408, 453, 454 

 Prorocentracese, 76-78, 80 

 Prorocentrum Ehrenb., 77 



P. rnicans Ehrenb., 76, 77 (fig. 56 G and D) 

 Proterendotfirix W. & G. S. West, 38 

 Protochrysis Phceophyccarurn, 80 

 Protococcacese, 191-194 

 Protococcales, 160-222 



Protococcus Ag. (= Pleurococcus auct.), 132, 

 193, 194, 195, 419 



P. antarcticus G. S. West forma robusta 

 W. & G. S. West, 193 



P. dissectus Kiitz., 193, 195 



P. Ndgdii Chodat, 191 



P. rufesrais Kiitz., 193 



- var. sanguineus W. & G. S. West, 192 

 (fig. 1185) 



P. viridis Ag., 191, 192 (fig. 118.4), 193, 



195, 419, 447 

 Protococcus- formation , 419 

 Protoderma Kiitz., 192, 298, 299 



P. Browiiii Fritsch, 447 



P. viride Kiitz., 299 

 Protoderma-stsAe of Protococcus, 146 

 Protosiphon Klebs, 222, 223, 224, 251 



P. botryoides (Kiitz.) Klebs, 224 

 Protosiphonacec-e, 223 

 Protothcca Kriiger, 198 



P. moriformis Kriiger, 158 

 PROVAZEK, 97 



Psephotaxus W. & G. S. West, 287 

 Pseudcndoclonium Wille, 301, 304 

 Pseudobryopsis Berth., 225, 226, 227 



P. myura(3. As?.) Berth., 226 (fig. 146 2-6) 

 Pseudochxte W. & G. S. West, 295, 297, 298, 



300 

 Pseudocilia of the Tctrasporeae, 185, 187 



303 



