474 



TUFTS COLLEGE STUDIES, VOL. II, No. 3 



Quekettii, 408. 

 Palmella, 136. 



ininiata, 137. 



v. aequalis, 137. 

 Palmellococcus, 158, 305. 



marinus, 159. 



miniatus, 159. 



thermalis, 159. 

 Palrnodactylon, 140. 



simplex, 140. 



varium, 140. 

 Palmodictyon, 310. 



viride, 310. 

 Patidorina, 132. 



Morum, 132. 

 Parthenospores, 105. 

 Paspaloideae, 410. 

 Pectinata, 102. 

 Pediastrum, 161, 176. 



angulosum, 176, 178. 



biradiatum, 179. 



v. etnarginatum, 179. 



Boryanum, 176, 177. 

 v. granulatum, 178. 

 v. uodulatum, 178. 



duplex, 179. 



v. brachylobuui, 179. 

 v. clathratum, 179. 



Ehrenbergii, 179. 



forcipatum, 176, 177. 



pertusum, 179. 



rotula, 179. 



v. emarginatum, 179. 



simplex, 177. 



v. duodenarium, 177. 

 v. Sturtnii, 177. 



tetras, 179. 



tricornutum, 177. 



undulatum, 178. 



vagum, 176. 178. 

 Pellucida, 376. 

 Penicillus, 391, 396, 431. 



capitatus. 392, 393. 



dumetosus, 392. 



Lamourouxii, 392. 

 v. gracilis, 393. 



Phoenix, 393. 



pyriformis, 393. 

 Petrocelis, 147. 152. 

 Petrosiphon, 375. 



adhaerens, 375. 

 Phycopeltis, 321. 

 Phyllactidium, 321. 



tropicum, 321.- 

 Phyllantoideae, 410. 

 Phyllodictyon, 377. 

 Phyllosiphon, 407, 408. 



Arisari, 408. 

 Phyllosiphonaceae, 407. 

 Pilinia, 86, 291 



endophytica, 292. 



Lunatiae, 292. 



inaritima, 293. 



minor, 292. 



Morsei, 293. 



Reinschii, 293. 



rimosa, 293. 

 Piloboloideae, 422. 

 Pithophora, 362. 



aequalis, 363. 



v. floridensis, 363. 



Cleveana, 244, 280, 364. 



kewensis, 364. 



oedogonia, 363. 



v. vaucherioides, 363. 



Roettleri, 364. 



varia, 364. 



Plagiosperrnicae, 122. 

 Plagiospermum, 121. 



tenuc, 126. 

 Plates, 81. 

 Platydorina, 133. 



caudata, 134. 

 Pleodorina, 132. 



californica, 133. 



illinoisensis, 133. 

 Pleurocarpus, 125. 



columbianus, 125. 



mirabilis, 125 

 Pleurococcaceae. 217. 

 Pleurococcus, 304, 305. 



aquaticus, 305. 



Ktitzingii, 305. 



marinus, 159. 



regularis, 305. 



vulgaris, 284, 304, 305. 

 Polychaetophora, 278. 



lamellosa, 278. 



simplex, 278. 

 Polyedrium, 161. 



angulosum, 164. 



armatum, 165. 



enorme, 165. 



gigas, 165. 



gracile, 164. 

 v. tenue, 164. 



irregulare, 164. 



minimum, 163. 



minutum, 166. 



muticum, 163. 



pachydermum, 164. 



puncfulatum, 163. 



quadratum, 164. 



