474 



TUFTS COLLEGE STUDIES, VOL. II, No. 3 



Quekettii, 408. 

 Palmella, 136. 



rniniata, 137. 



v. aequalis, 137. 

 Palmellococcus, 158, 305. 



marinus, 159. 



miniatus, 159. 



thermalis, 159. 

 Palmodactylou, 140. 



simplex, 140. 



varium, 140. 

 Palmodictyon, 310. 



viride, 310. 

 Pandorina, 132. 



Morum, 132. 

 Parthenospores, 105. 

 Paspaloideae, 410. 

 Pectinata, 102. 

 Pediastrum, 161, 176. 



angulosuui, 176, 178. 



biradiatum, 179. 



v. emargitiatum. 179. 



Boryanum, 176, 177. 

 v. granulatum, 178. 

 v. undulatum, 178. 



duplex, 179. 



v. brachylobutn, 179. 

 v. clathratum, 179. 



Ehrenbergii, 179. 



forcipatum, 176, 177. 



pertusum, 179. 



rot it la, 179. 

 z>. emarginatum, 179. 



simplex, 177. 



v. duodenariuni, 177. 

 v. Sturmii, 177. 



tetras, 179. 



tricornutum, 177. 



undulatum, 178. 



vagum, 176, 178. 

 Pellucida, 376. 

 Penicillus, 391, 396, 431. 



capitatus, 392, 393. 



dumetosus, 392. 



Latnourouxii, 392. 

 v. gracilis, 393. 



Phoenix, 393. 



pyriformis, 393. 

 Petrocelis,' 147. 152. 

 Petrosipbon, 375. 



adhaerens, 375. 

 Phycopeltis, 321 . 

 Phyllactidium, 321. 



tropicum, 321. 

 Phyllantoideae, 410. 

 Phyllodictyon, 377. 

 Pbyllosipbou, 407, 408. 



Arisari, 408. 

 Pbyllosiphonaceae, 407. 

 Pilinia, 86, 291 



endophytica, 292. 



Lunatiae, 292. 



uiaritima, 293. 



minor, 292. 



Morsei, 293. 



Reinschii. 293. 



rimosa, 293. 

 Piloboloideae, 422. 

 Pitbophora, 362. 



aequalis, 363. 



v. floridensis, 363. 



affinis, 363. 



Cleveana, 244, 280, 364. 



kezvensis, 364. 



oedogonia, 363. 



v. I'aucherioides, 363. 



Roettleri, 364. 



varia, 364. 



Plagiospermioae, 122. 

 Plagiospermum, 121. 



tenue, 126. 

 Plates, 81. , 

 Platyrlorina, 133. 



caudata, 134. 

 Pleodorina, 132. 



californica, 133. 



illinoisensis, 133. 

 Pleurocarpus, 125. 



columbianus, 125. 



mirabilis, 125. 

 Pleurococcaceae. 217. 

 Pleurococcus, 304, 305. 



aquaticus, 305. 



Kiitzingii, 305. 



mar in us, 159. 



regularise 305. 



vulgaris, 284, 304, 305. 

 Polychaetophora, 278. 



lamellosa, 278. 



simplex, 278. 

 Polyedrium, 161. 



angulosum, 164. 



armatum, 165. 



etwrine, 165. 



gigas, 165. 



gracile, 164. 

 v. tenue, 164. 



irregulare, 164. 



minim inn, 163. 



minutnm, 166. 



inuttciun, 163. 



pachydermum, 164. 



punctnlatiitn, 163. 



quadratum, 164. 



