vol.i] Setchell— Gardner. — Algce of Northwestern America. 395 



PAGE 



Odonthalia semicostata 336 (359) 



Oneobyrsa Cesatiana ISO 



Ooeardiurn stratum 205 



Oocystis solitaria 205 



f . crassa 205 



f. major 205 



Oseillatoria amoena 184 



amphibia 183 



Bonnernaisonii 183 



ehlorina 183 



geminata 183 



lsetevirens 184 



limosa 183 



nigro-viridis 183 



Okeni 184 



princeps 182 



proboscidea 182 



sancta 182 



splendida 184 



f. uneinata 184 



tenuis 183 



var. tergestiiia 183 



Paditia deusta 253 



Pediastrum angulosum 207 



Boryanum 207 



Petroc-elis -Middendorfii ....357 (206) 



Peysonnellia Dubyi 367 



Phloeospora subartieulata 245 



tortilis 245 



Phormidium ambiguum 185 



autumnale 186 (184) 



Corium 185 



favosum 186 



foveolarum 184 



inundatum 185 



laminosum 185 



papyraceum 185 



Retzii 185 



tenue 185 



Treleasei 186 



uneinatum 186 



Valderiarmm 184 



Phyeoecelis Baltica 239 



fecunda 249 



Phycolapathum crispatum 240 



Phyllitis fascia 243 



Phyllophora Brodifei 304 



interrupts 304 



nervosa 308 



Phyllospora Henziesii 271 



Pikea Grayana 353 



Woodii 353 



Platythamnion heteromorphum 



344 (343) 



f. reversum 345 



f. typicum : 344 



Pleetonema roseolum 188 



Pleonosporium Vancouveria- 



num 338 



PAGE 



Pleurocapsa fuliginosa 181 



Pleurophyeus Gardneri 264 



Plocamium coccineurn 317 



f. uneinatum 317 



violaeeum 317 



Polyneura Californica 304 



Pohjsiphonia arctica 329 



atrorubeseens 326 (327) 



I' . minor 326 



bipimiata 327 



f. psammicola 329 



Californica 327 (328) 



var. plumigera 327 



dendroidea 328 



nigrescens 326 (327, 328) 



f. Pucoides 326 



parasitica .. 328 



senticulosa 327 



spinifera 328 



ureeblata 326 (327) 



rillum 330 



Porphyra abyssicola 291 



amp'lissima 290 (291) 



laciniata.. 289 



f. umbilicalis 289 



leucosticta 290 



miniata 291 



f. cuneiformis 291 



naiadum 290 



f. major 290 



f. minor 290 



Nereocystis 290 



occidentalis 292 



perforata 289 (290) 



f. segregata 290 



piertusa 313 



tenuissima 291 



variegata 291 (292) 



vulgaris 290 



Postelsia palmseformis 268 



Prasiola Antarctica 215 



borealis 215 



calophylla 215 



crispa 214 (215, 216) 



subsp. marina 217 



£. maxima 216 



fluviatilis 216 



Pringsheimia seutata 219 



f. Cladopborse 219 (182) 



Prionitis amgusta 350 



Clevelandii 308 



decipiens 350 



jubata 352 



lanceolata 352 (350, 351) 



var. filicina 352 



Lyallii 350 (349) 



f. densissima 351 



f. depauperata 352 



f. dilatata 351 



