417 Porto (Porto) Portugal : Hauck & Richter 350 : Synedra splendens Portofino (Liguria) Italy : Ekart, ser. 2, 578 : Navicula lance secondary Kützing Portofino (Liguria) Italy : Ekart, ser. 2, 578 : Pinnularia viridis Porto Maurizio (Liguria) Italy : Ekart, ser. 2, 790 : Doryphora elegans Roper Porto Maurizio (Liguria) Italy : Ekart, ser. 2, 790 : Podocystis adriatica Kützing Porto Maurizio (Liguria) Italy : Ekart, ser. 2, 790 : Podocystis americana J.W. Bailey Porto Maurizio (Liguria) Italy : Ekart, ser. 2, 1425 : Schizonema implicatum Harvey Porto Maurizio (Liguria) Italy : Ekart, ser. 2, 1425 : Schizonema rutilans v. implicatum Porto Rico, see (Puerto Rico) West Indies : Cleve & Möller 7, 22 Porto Rosega (Friuli-Venezia-Giulia) Italy : Hauck & Richter 97 : Synedra pulchella Kützing v. lanceolata Port Rush, see Portrush (Antrim) Northern Ireland : Eulenstein 4 P[or]t Rush, Irel'地, see Portrush (Antrim) North Ireland : H.L. Smith 216 Portrush (Antrim) Northern Ireland : Eulenstein 4 : Orthosira arenaria (Moore) W. Smith Portrush (Antrim) Northern Ireland : H.L. Smith 216 : Melosira arenaria Moore Portrush (Antrim) Northern Ireland : H.L. Smith 216 : Orthosira arenaria W. Smith Portugal :: see Porto Port William, Falkland Islands : Rabenhorst 2556 : Actinoptychus omphalopelta Grunow Port William, Falkland Islands : Rabenhorst 2556 : Actinoptychus senarius Port William, Falkland Islands : Rabenhorst 2556 : Actinoptychus undulatus Ehrenberg v. senarius Port William, Falkland Islands : Rabenhorst 2556 : Amphora coffeaeformis Kützing v. minor Port William, Falkland Islands : Rabenhorst 2556 : Amphora coffeaeformis Kützing v. limata Port William, Falkland Islands : Rabenhorst 2556 : Amphora crassa Gregory v. incurva Port William, Falkland Islands : Rabenhorst 2556 : Amphora obtusa Gregory Port William, Falkland Islands : Rabenhorst 2556 : Amphora proteus Grunow Port William, Falkland Islands : Rabenhorst 2556 : Auliscus gregorii Janisch Port William, Falkland Islands : Rabenhorst 2556 : Auliscus sculptus Ralfs v. interruptus Port William, Falkland Islands : Rabenhorst 2556 : Cocconeis disrupta Gregory Port William, Falkland Islands : Rabenhorst 2556 : Cocconeis distans Gregory Port William, Falkland Islands : Rabenhorst 2556 : Cocconeis pseudomarginata Gregory Port William, Falkland Islands : Rabenhorst 2556 : Cocconeis scutellum Ehrenberg v. distans Port William, Falkland Islands : Rabenhorst 2556 : Coscinodiscus centralis Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Coscinodiscus marginatus Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Cyclotella striata Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Endictya oceanica Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Eunotia doliolus Wallich Port William, Falkland Islands : Rabenhorst 2556 : Eupodiscus fulvus W. Smith Port William, Falkland Islands : Rabenhorst 2556 : Fragilaria pacifica Grunow hamulifera Port William, Falkland Islands : Rabenhorst 2556 : Grammatophora oceanica Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Grammatophora parallela Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Grammatophora serp ina Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Hyali discus subtilis J.W. Bailey Port William, Falkland Islands : Rabenhorst 2556 : Melosira nummuloides C. Agardh Port William, Falkland Islands : Rabenhorst 2556 : Melosira sul might Kützing Port William, Falkland Islands : Rabenhorst 2556 : Melosira sulcata W. Smith v. minor Port William, Falkland Islands : Rabenhorst 2556 : Navicula crabro Kützing Port William, Falkland Islands : Rabenhorst 2556 : Navicula didyma Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Navicula entomon Ehrenberg v. didyma Port William, Falkland Islands : Rabenhorst 2556 : Navicula liber W. Smith Port William, Falkland Islands : Rabenhorst 2556 : Navicula littoralis Donkin Port William, Falkland Islands : Rabenhorst 2556 : Navicula lyra Ehrenberg Port William, Falkland Islands : Rabenhorst 2556 : Navicula palpebralis Brébisson Port William, Falkland Islands : Rabenhorst 2556 : Navicula polysticta Greville v. minor Port William, Falkland Islands : Rabenhorst 2556 : Nitzschia dubia Hantzsch Port William, Falkland Islands : Rabenhorst 2556 : Nitzschia latestriata Pritchard Port William, Falkland Islands : Rabenhorst 2556 : Nitzschia signa W. Smith Port William, Falkland Islands : Rabenhorst 2556 : Pinnularia directa W. Smith