Index 



469 



Phyllophuc Schmidle, 309 

 Phyllosiphon Kiihn, 139, 212, 222, 242, 243, 

 421 



P. Alocasise, Lagerh., 243 



P. Arisari Kiihn, 242 (fig. 150), 243 



P. maximum Lagerh., 243 



P. Philodendri Lagerh., 243 

 Phyllosiphonacese, 242, 243 

 Phylogeny of Desrnids, 370 

 Phymatodocis Nordst., 381 



Ph. irregularis Schmidle, 300 (fig. 224 H) 



Ph. Nordstedtiana Wolle, 300 (fig. 224 E-G) 

 Physocytium Borzi, 185, 405 



P. confervicola Borzi, 184 (fig. 110Z>-#) 

 Phythelios Frenzel, 199 

 Phytodiniacese, 57, 80 

 Phytodinium Klebs, 57 

 Phytomorula Kofoid, 453 

 Phi/tophysa Weber van Bosse, 222, 243, 421 



P. Treubii W. van Bosse, 243, 420 (fig. 200) 

 Pilea (Urticacese), 243, 421 

 Pilidiocystis Bolilin, 200 

 Pilinia Kiitz., 303 

 Pithiscus Dang., 170 



Pithophora Wittr., 250, 259, 202, 203, 205, 

 428, 429 



P. Cleveana Wittr., 203, 204 (fig. 109), 205 



P. kewensis Wittr., 205 



P. Boettleri Wittr., 205 

 Pithophoracese, 205 

 Placodermse, 380 

 Plagiospermum Cleve, 338 



P. tenue Cleve, 338 

 Planctonema Schmidle, 287 

 Plankton of pools and lakes, 433-445 

 Planktonidla Schiitt, 91 

 Planophila Gerneck, 194 

 Planosporacege, 209-210 

 PLATE, 00 

 Platydorina Kofoid, 170, 178, 180, 182 



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



440 



Platymonas G. S. West, 453 

 PLAYFAIR, 145 

 Plectonema Thur., 20, 43 



PI. capitatum Lemm., 20 

 Pleodorina Shaw, 170, 178, 180, 182, 429 



PL calif arnica Shaw, 170, 178 



PL illinoisensis Kofoid, 109, 170, 178 (fig. 



100), 440, 453 

 Pleurocapsa Thur., 25, 33 

 Pleurococcus vulgaris auct., 191 

 Pleurodiscus Lagerh., 343, 347 



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



210 D) 

 Pleurotsenium Nag., 302, 303, 305, 378, 381 



PL coronulatum (Grun.) Wille, 350 



PL doliiformeW. & G. S. West, 302 (fig. 227 B) 



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

 G. S. West, 307 



PL perlongum W. & G. S. West, 350 



PL trochiscum W. & G. S. West, 302 (fig. 



227,4) 



Pleurothamnion Borzi, 301, 303 

 Podolampas Stein, 58, 59, 04 

 Polyblepharidacese, 104, 105 

 Polyblepharides Dang., 105 



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



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



Polychloris Borzi, 408, 409 



Polycystin, 10 



Polyedrium Nag., 200 



Polycdropsis Schmidle, 200 



Polykrikos Biitschli, 54, 79 



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

 Polymorphism, in the Myxophyceae, 30; in 



Mdosira, 100; in the Green Algae, 145 

 Polyphysa Lain., 273 

 Polytoma Ehrenb., 174 



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

 Porodiscus Grev., 118 



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

 Porphyrosiphoii Kiitz., 38 



P. Notarisii (Menegh.) Kiitz., 31 

 Potamoplankton, 445^47 

 Pouchetia Schiitt, 51, 52 



P. armata Dogiel, 55 

 POWERS, 170, 179 

 Prasinocladus Kuck., 184, 185, 405 



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

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



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



D-G), 419 



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

 Prasiolacese, 279 



PKINGSHEIM, 315, 310, 317, 338, 388 

 Pringsheimia Reinke, 298, 299 

 PRINTZ, 407, 408, 453, 454 

 Prorocentraceae, 70-78, 80 

 Prorocentrum Ehrenb., 77 



P. micans Ehrenb., 70, 77 (fig. 50 G and D) 

 Prolerendothrix W. & G. S. West, 38 

 Protochrysis Phxophyccarum, 80 

 Protococcacese, 191-194 

 Protococcales, 100-222 



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. Ndgelii Chodat, 191 



P. rufescens Kiitz., 193 



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



(fig. use) 



P. viridis Ag., 191, 192 (fig. 118^4), 193, 



195, 419, 447 

 Protococcws-forrnation. 419 

 Protoderma Kiitz., 192, 298, 299 



P. Brownii Fritsch, 447 



P. viride Kiitz., 299 

 Protoderma-st&te of Protococcus, 140 

 Protosiphon Klebs, 222, 223, 224, 251 



P. botryoidcs (Kiitz.) Klebs, 224 

 Protosiphonaceae, 223 

 Proiothc.ca Kriiger, 198 



P. moriformis Kriiger, 158 

 PROVAZEK, 97 



Psephotaxus W. & G. S. West, 287 

 Pseudendoclonium Wille, 301, 304 

 Pseudobryopsis Berth., 225, 220, 227 



P. myura (J. Ag.) Berth., 220 (fig. 140 2-6) 

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



300 

 Pseudocilia of the Tetrasporese, 185, 187 



303 



