Index Nominum Algarum Image Index
747 CARD IMAGES
beginning with PTEROMONAS
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Return to master index - PTEROMONAS A. Seligo
- Pteromonas aculeata E.J. Lemmermann
- Pteromonas aculeata var. crenulata ('crenulatus') M.T. Philipose
- Pteromonas aculeata var. irregularis A.A. Korshikov
- Pteromonas aculeata var. lemmermannii H.L. Skuja
- Pteromonas aculeata var. mirifica Lee
- Pteromonas acuta B.V. Skvortzov
- Pteromonas acuta B.V. Skvortzov
- Pteromonas aequiciliata (J. Gicklhorn) R.H. Chodat
- Pteromonas aequiciliata (J. Gicklhorn) P. Bourrelly
- Pteromonas alata (F.J. Cohn) A. Seligo
- Pteromonas alata var. australis G.I. Playfair
- Pteromonas angulosa R.H. Chodat
- Pteromonas angulosa var. cordiformis (E.J. Lemmermann) M.T. Philipose
- Pteromonas angulosa var. elongata B.V. Skvortzov
- Pteromonas angulosa var. incurva B.V. Skvortzov
- Pteromonas angulosa var. obtusa B.V. Skvortzov
- Pteromonas angulosa var. scutiformis G.I. Playfair
- Pteromonas angulosa var. takedana (G.S. West) A.A. Pascher
- Pteromonas angulosa var. vexilliformis G.I. Playfair
- Pteromonas armata A.A. Korshikov
- Pteromonas armata B.V. Skvortzov
- Pteromonas armata B.V. Skvortzov
- Pteromonas bicorniculata B.V. Skvortzov
- Pteromonas caudata B.V. Skvortzov
- Pteromonas caudata B.V. Skvortzov
- Pteromonas chodatii E.J. Lemmermann
- Pteromonas compressa B.V. Skvortzov
- Pteromonas conspersa B.V. Skvortzov
- Pteromonas cordiformis E.J. Lemmermann
- Pteromonas cordiformis var. subcordiformis (B.V. Skvortzov) L.S. Péterfi
- Pteromonas cornuta B.V. Skvortzov
- Pteromonas cruciata G.I. Playfair
- Pteromonas cruciata var. pulchra G.I. Playfair
- Pteromonas cryophila (R.H. Chodat) A.A. Pascher
- Pteromonas cylindrica B.V. Skvortzov
- Pteromonas cylindrica B.V. Skvortzov
- Pteromonas danubialis T. Hortobágyi
- Pteromonas denticulata H.L. Skuja
- Pteromonas diptera W. Conrad
- Pteromonas foliolata B.V. Skvortzov
- Pteromonas foliosa B.V. Skvortzov
- Pteromonas foliosa B.V. Skvortzov
- Pteromonas golenkiniana A.A. Pascher
- Pteromonas golenkiniana var. subquadrata Lee
- Pteromonas golenkiniana var. tiszae T. Hortobágyi
- Pteromonas incisa B.V. Skvortzov
- Pteromonas incisa B.V. Skvortzov
- Pteromonas incurva (B.V. Skvortzov) B.V. Skvortzov
- Pteromonas korshikoffi B.V. Skvortzov
- Pteromonas leopoliensis J. Woloszynska
- Pteromonas limnetica T. Hortobágyi
- Pteromonas limnetica var. orientalis S. Cirik-Altindag
- Pteromonas loligo W. Conrad
- Pteromonas longicollis B.V. Skvortzov
- Pteromonas longicollis B.V. Skvortzov
- Pteromonas madrasensis M.O.P. Iyengar
- Pteromonas meyeriana N.M. Kabanov
- Pteromonas mitra B.V. Skvortzov
- Pteromonas multipyrenoidea M.O.P. Iyengar
- Pteromonas nasuta B.V. Skvortzov
- Pteromonas nivalis R.H. Chodat
- Pteromonas oblonga B.V. Skvortzov
- Pteromonas obtusa (B.V. Skvortzov) B.V. Skvortzov
- Pteromonas obtusa B.V. Skvortzov
- Pteromonas ovalis B.M. Griffiths
- Pteromonas pascheri B.V. Skvortzov
- Pteromonas penardii L. Gain
- Pteromonas planctonica B.V. Skvortzov
- Pteromonas planctonica B.V. Skvortzov
- Pteromonas protracta E.J. Lemmermann
- Pteromonas pseudoaculeata G.E. Huber-Pestalozzi
- Pteromonas pseudoangulosa L.S. Péterfi
- Pteromonas punctata B.V. Skvortzov
- Pteromonas quadrata Strampff
- Pteromonas rectangularis E.J. Lemmermann
- Pteromonas rhombica B.V. Skvortzov
- Pteromonas rhomboides B.V. Skvortzov
- Pteromonas robusta A.A. Korshikov
- Pteromonas rotantes B.V. Skvortzov
- Pteromonas rotantes B.V. Skvortzov
- Pteromonas rotundata B.V. Skvortzov
- Pteromonas rotundata B.V. Skvortzov
- Pteromonas rugosa B.V. Skvortzov
- Pteromonas rugosa B.V. Skvortzov
- Pteromonas simplex B.V. Skvortzov
- Pteromonas simplex B.V. Skvortzov
- Pteromonas sinuosa R.H. Chodat
- Pteromonas spinosa G. Nygaard
- Pteromonas spinosa B.V. Skvortzov
- Pteromonas spinosa B.V. Skvortzov
- Pteromonas subcordiformis B.V. Skvortzov
- Pteromonas subcordiformis B.V. Skvortzov
- Pteromonas takedana G.S. West
- Pteromonas tenuis J.H. Belcher & E.M.F. Swale
- Pteromonas torta A.A. Korshikov
- Pteromonas torta A.A. Korshikov
- Pteromonas trigustra B.V. Skvortzov
- Pteromonas triquetra B.V. Skvortzov
- Pteromonas undulata B.V. Skvortzov
- Pteromonas undulata B.V. Skvortzov
- Pteromonas variabilis G.E. Huber-Pestalozzi
- Pteromonas varians F.W. Jane
- Pteromonas vernalis ('vernale') B.V. Skvortzov
- Pteromonas vexilliformis (G.I. Playfair) L.S. Péterfi
- Pteromonas vexilliformis var. aequiciliata (J. Gicklhorn) L.S. Péterfi
- Pteromonas volgensis W. Zykoff
- Pteromonas willei L. Gain
- PTERONCOLA R.W. Holmes & D.A. Croll
- Pteroncola marina R. W. Holmes & Croll
- PTERONIA F. Schmitz
- Pteronia pectinata (Hooker f. & Harvey) Schmitz
- Pteronia plumosa Kylin
- PTEROPHYCUS J.G. Agardh {section of Sargassum}
- PTEROSIPHONIA P. Falkenberg
- Pterosiphonia acanthina (J.G. Agardh) P. Falkenberg
- Pterosiphonia arctica (J.G. Agardh) W.A. Setchell & N.L. Gardner
- Pterosiphonia ardreana C.A. Maggs & M.H. Hommersand
- Pterosiphonia baileyi (Harvey) Falkenberg
- Pterosiphonia bartlingiana (Kützing) Ardré
- Pterosiphonia bipinnata (A.P. Postels & F.J. Ruprecht) P. Falkenberg
- Pterosiphonia bipinnata var. robusta (N.L. Gardner) M.S. Doty
- Pterosiphonia californica Kylin
- Pterosiphonia calliptera (Kützing) Ardré
- Pterosiphonia clevelandii (Farlow) Hollenberg
- Pterosiphonia cloiophylla (C. Agardh) Falkenberg
- Pterosiphonia complanata Schmitz {mss.}
- Pterosiphonia complanata (S. Clemente y Rubio) P. Falkenberg
- Pterosiphonia concinna Baardseth
- Pterosiphonia dendroidea (J.P.F.C. Montagne) P. Falkenberg
- Pterosiphonia disticha Levring
- Pterosiphonia farlowii G.J. Hollenberg
- Pterosiphonia fibrillosa Okamura
- Pterosiphonia gardneri G.J. Hollenberg
- Pterosiphonia gracilis J.H. Kylin
- Pterosiphonia hamata E.S. Sinova
- Pterosiphonia japonica Nagai
- Pterosiphonia javanica (Martens) De Toni
- Pterosiphonia parasitica (W. Hudson) P. Falkenberg
- Pterosiphonia parasitica var. australis Joly & Cordeiro Marino
- Pterosiphonia parasitica f. borealis Collins
- Pterosiphonia parasitica var. dendroidea (Montagne) Collins, Holden, & Setchell
- Pterosiphonia parasitica f. luxurians Collins
- Pterosiphonia paucicorticata Dawson
- Pterosiphonia pennata (C.A. Agardh) C.F. Sauvageau
- Pterosiphonia pinnulata (Kützing) C.A. Maggs & M.H. Hommersand
- Pterosiphonia plumula (J.G. Agardh) F.S. Collins
- Pterosiphonia pumila K. Yendo
- Pterosiphonia pusilla Levring
- Pterosiphonia pygmaea (Setchell) Kylin
- Pterosiphonia robusta Gardner
- Pterosiphonia robusta var. divaricata N.L. Gardner
- Pterosiphonia robusta var. inermis Gardner
- Pterosiphonia simplicifilum (J. Agardh) De Toni
- Pterosiphonia simplicifilum {supplanted}
- Pterosiphonia skottsbergii Levring
- Pterosiphonia spinifera (Kützing) Ardré
- Pterosiphonia spinifera var. californica (Kylin) Ardré
- Pterosiphonia spinifera var. robusta Ardré
- Pterosiphonia spinifera var. spinifera Ardré {err. cit.}
- Pterosiphonia stangeri (J. Agardh) Falkenberg
- Pterosiphonia thuyoides (Harvey) Schmitz
- Pterosiphonia woodii (Harvey) Falkenberg
- Pterosiphonia woodii f. pygmaea Setchell
- PTEROSIPHONIELLA E.Y. Dawson
- Pterosiphoniella williamsii Dawson
- PTEROSPERMA C.-H.-G. Pouchet
- PTEROSPERMA (Pouchet) Lemmermann {section}
- Pterosperma atlanticum Lohmann
- Pterosperma citriforme Parke
- Pterosperma cristatum Schiller
- Pterosperma cuboides Gaarder
- Pterosperma dictyon (Jørgensen) Ostenfeld
- Pterosperma eurypteron Parke
- Pterosperma hemisphaericum Meunier
- Pterosperma hexagonum Meunier
- Pterosperma inornatum Parke
- Pterosperma joergensenii ('joergenseni') Schiller
- Pterosperma labyrinthus Ostenfeld
- Pterosperma laciniatum Meunier
- Pterosperma lenticulare Meunier
- Pterosperma marginatum Gaarder
- Pterosperma michaelsarsii (Gaarder) Parks & Boalch
- Pterosperma moebii ('möbii') (Jørgensen) Ostenfeld
- Pterosperma moebiusii ('möbiusi') (Lemmermann) Ostenfeld
- Pterosperma moebiusii ('möbiusi') (Lemmermann) Ostenfeld
- Pterosperma oblongum ('oblonga') Cleve
- Pterosperma oblongum Cleve
- Pterosperma oblongum ('oblonga') Cleve
- Pterosperma octogonum Meunier
- Pterosperma ornatum Schiller
- Pterosperma ovatum Pouchet
- Pterosperma ovum Gaarder
- Pterosperma parallelum Gaarder
- Pterosperma parvareopunctatum Thorrington-Smith
- Pterosperma polyedro-sphaericum Meunier
- Pterosperma polygonum Ostenfeld
- Pterosperma porosum Parke
- Pterosperma reticulatum Ostenfeld
- Pterosperma rotondum Pouchet
- Pterosperma rotundatum 'Pouchet'
- Pterosperma rotundum 'Pouchet'
- Pterosperma saturnus Meunier
- Pterosperma trigonum Meunier
- Pterosperma undulatum Ostenfeld
- Pterosperma vanhoeffenii ('vanhöffenii') (Jørgensen) Ostenfeld
- PTEROSPERMELLA A. Eisenack
- Pterospermella aureolata (Cookson & Eisenack) Eisenack
- Pterospermella australiensis (Deflandre & Cookson) Cookson & Eisenack
- Pterospermella brasiliensis (Brito) Wicander
- Pterospermella capitana Wicander
- Pterospermella latibalteus Wicander
- Pterospermella microptera (Deflandre & Cookson) Cookson & Eisenack
- Pterospermella onondagaensis ('onondagaense') (Deunff) Wicander
- Pterospermella radiata Wicander
- Pterospermella scruposa Colbath
- Pterospermella solis Wicander
- PTEROSPERMOPSIMORPHA Timofeev
- PTEROSPERMOPSIMORPHA Timofeev
- Pterospermopsimorpha annularis ('annulare') Timofeev
- Pterospermopsimorpha binata Timofeev
- Pterospermopsimorpha insolita Timofeev
- Pterospermopsimorpha kelar Timofeev
- Pterospermopsimorpha mogilevica Timofeev
- Pterospermopsimorpha pileiformis Timofeev
- PTEROSPERMOPSIS W. Wetzel
- Pterospermopsis aristotelesii Ioannides, Stavrinos & Downie
- Pterospermopsis aureolata Cookson & Eisenack
- Pterospermopsis australiensis ('australiense') Deflandre & Cookson
- Pterospermopsis australiensis Deflandre & Cookson
- Pterospermopsis barbarae Górka
- Pterospermopsis bernardinae Cramer
- Pterospermopsis brasiliensis Brito
- Pterospermopsis bulbosa S. A. J. Pocock
- Pterospermopsis carminae Cramer
- Pterospermopsis castellaroi Pothe de Baldis
- Pterospermopsis centrata Cookson & Eisenack
- Pterospermopsis chinaica Timofeev
- Pterospermopsis chiquitina Cramer
- Pterospermopsis circumstriata Jardine & al.
- Pterospermopsis danica W. Wetzel
- Pterospermopsis doeringii S. A. J. Pocock
- Pterospermopsis eurypteris Cookson & Eisenack
- Pterospermopsis flosdevonica (Stockmans & Willière) Stockmans & Willière
- Pterospermopsis fragalis Thusu
- Pterospermopsis ginginensis Deflandre & Cookson
- Pterospermopsis goslarensis Mädler
- Pterospermopsis guapita Cramer
- Pterospermopsis heliantoides De Coninck
- Pterospermopsis helios Sarjeant
- Pterospermopsis hermosita Cramer
- Pterospermopsis macroptera H. Döring
- Pterospermopsis martinii F. H. Cramer
- Pterospermopsis microptera Deflandre & Cookson
- Pterospermopsis onondagaensis Deunff
- Pterospermopsis pelagica (Eisenack) Eisenack
- Pterospermopsis pluriparietes H. Döring
- Pterospermopsis rajada Cramer
- Pterospermopsis rugosa S. A. J. Pocock
- Pterospermopsis scabrata S. A. J. Pocock
- Pterospermopsis spinosa Clarke & Verdier
- Pterospermopsis van-campoae ('van campoae') Rossignol
- Pterospermopsis zonaria Cookson & Eisenack
- PTEROSPHAERA E.H. Jřrgensen
- Pterosphaera dictyon Jřrgensen
- Pterosphaera flagellifera (Meunier) Lohmann
- Pterosphaera moebii ('möbii') Jřrgensen
- Pterosphaera nana Lohmann
- Pterosphaera nationalis Lohmann
- Pterosphaera polygonum (Ostenfeld) [Lohmann]
- Pterosphaera reticulatum (Ostenfeld) [Lohmann]
- Pterosphaera vanhoeffenii ('vanhöffeni') Jřrgensen
- PTEROSPHAERIDIA K. Mädler
- Pterosphaeridia eisenackii Mädler
- Pterosphaeridia nodosa Mädler
- Pterosphaeridia pachytheca (Eisenack) Mädler
- Pterosphaeridia undulata Mädler
- PTEROTA Cramer
- Pterota asplenioides (Esper) Cramer
- Pterota californica (Ruprecht) Cramer
- Pterota densa (C. Agardh) Cramer
- Pterota plumosa Cramer
- Pterota plumosa var. superba Cramer
- Pterota plumosa var. vulgaris Cramer
- PTEROTHAMNION C.W. Naegeli
- PTEROTHAMNION {subgenus EUPTEROTHAMNION Naegeli}
- PTEROTHAMNION {sect. TETRAKLADION A. Athanasiadis}
- PTEROTHAMNION {subgen. PLATYTHAMNION (J. Agardh) A. Athanasiadis}
- PTEROTHAMNION J. Agardh {tribus}
- Pterothamnion abietinum (Reinsch) A. Athanasiadis
- Pterothamnion aciculare (Wollaston) A. Athanasiadis & G.T. Kraft
- Pterothamnion americanum (Harvey) Naegeli
- Pterothamnion antarcticum (Kylin) Moe & Silva
- Pterothamnion capense (Stegenga) A. Athanasiadis & G.T. Kraft
- Pterothamnion confusum (J. Agardh) A. Athanasiadis
- Pterothamnion crispum (Ducluzeau) Naegeli
- Pterothamnion cuspidatum (Wollaston) A. Athanasiadis & G.T. Kraft
- Pterothamnion flexile (Wollaston) A. Athanasiadis & G.T. Kraft
- Pterothamnion floccosum (Müller) Naegeli
- Pterothamnion francisianum (Wollaston) A. Athanasiadis & G.T. Kraft
- Pterothamnion heteromorphum (J. Agardh) A. Athanasiadis & G.T. Kraft
- Pterothamnion horridum (Tokida & Inaba) A. Athanasiadis & G.T. Kraft
- Pterothamnion intermedium (Tokida) A. Athanasiadis & G.T. Kraft
- Pterothamnion lapponicum (Ruprecht) Naegeli
- Pterothamnion latiramosum A. Athanasiadis
- Pterothamnion lindaueri (G. Feldmann) A. Athanasiadis & G.T. Kraft
- Pterothamnion macropterum (Meneghini) Naegeli
- Pterothamnion manifestum (Wollaston) A. Athanasiadis & G.T. Kraft
- Pterothamnion nodiferum (J. Agardh) A. Athanasiadis & G.T. Kraft
- Pterothamnion orbignianum_('orbignyanum') (Montagne) Naegeli
- Pterothamnion pectinatum (J.H. Kylin) A. Athanasiadis & G.T. Kraft
- Pterothamnion pluma (Dillwyn) Thuret
- Pterothamnion plumula (J. Ellis) Naegeli
- Pterothamnion plumula (J. Agardh) Collins
- Pterothamnion plumula var. bebbii (Reinsch) C.F. Boudouresque & M.M. Perret-Boudouresque
- Pterothamnion plumula subsp. haplokladion A. Athanasiadis
- Pterothamnion plumula subsp. verticillatum A. Athanasiadis
- Pterothamnion polyacanthum ( Kützing) Naegeli
- Pterothamnion polysporum (Itono) A. Athanasiadis & G.T. Kraft
- Pterothamnion ptilota (Hooker f. & Harvey) Naegeli
- Pterothamnion pusillum (Ruprecht) Naegeli
- Pterothamnion pylaisaei (Montagne) Naegeli
- Pterothamnion ramulentum (Wollaston) A. Athanasiadis & G.T. Kraft
- Pterothamnion recurvatum (Wollaston) A. Athanasiadis & G.T. Kraft
- Pterothamnion refractum (F.T. Kützing) C.W. Naegeli
- Pterothamnion reversum (Setchell & Gardner) Athanasiadis & G.T. Kraft
- Pterothamnion simile (Hooker f. & Harvey) Naegeli
- Pterothamnion spinescens (Strömfelt) A. Athanasiadis
- Pterothamnion squarrulosum (Harvey) A. Athanasiadis & G.T. Kraft
- Pterothamnion subnudum (F.J. Ruprecht) C.W. Naegeli
- Pterothamnion tepocense (Dawson) A. Athanasiadis & G.T. Kraft
- Pterothamnion ternifolium (J.D. Hooker & W.H. Harvey) C.W. Naegeli
- Pterothamnion villosum (J.H. Kylin) A. Athanasiadis & G. T. Kraft
- Pterothamnion yezoense (Inagaki) A. Athanasiadis & G.T. Kraft
- PTEROTHECA A. Grunow
- PTEROTHECA Grunow ex Forti
- Pterotheca aculeata Hajós
- Pterotheca aculeifera Grunow
- Pterotheca aculeifera var. spinosa Jousé
- Pterotheca alata Strelnikova
- Pterotheca capreolus (Forti) Hajós
- Pterotheca carinifera var. tenuis Jousé
- Pterotheca clavata N.I. Strelnikova
- Pterotheca cornuta Shibkova
- Pterotheca costata Shibkova
- Pterotheca cretacea Hajós & Stradner
- Pterotheca crucifera Hanna
- Pterotheca danica (Grunow) Forti
- Pterotheca evermannii ('evermanni') Hanna
- Pterotheca gracillima J. Fenner
- Pterotheca hungarica (Pantocsek) Forti
- Pterotheca infundibulum Krotov
- Pterotheca kittoniana Grunow
- Pterotheca major Jousé
- Pterotheca parvula (Hanna) Hajós & Stradner
- Pterotheca pokrovskajae A.P. Jousé
- Pterotheca reticulata Sheshukova-Poretskaya
- Pterotheca rossica (Pantocsek) Forti
- Pterotheca simplex Strelnikova
- Pterotheca spada Tempère & Brun
- Pterotheca spinosa A.P. Jousé
- Pterotheca subulata Grunow
- Pterotheca uralica Jousé
- Pterotheca uralica A.P. Jousé
- Pterotheca uralica A.P. Jousé
- PTEROTON A. Athanasiadis {subgenus}
- PTEROTOSPHAERULA F.H. Cramer
- Pterotosphaerula aliculata F.H. Cramer
- Pterotosphaerula astrala F.H. Cramer
- PTEROTRICHUM F.T. Kützing {section of Callithamnion}
- Pterygophora californica F.J. Ruprecht
- PTERIGOSPERMUM Targioni Tozzetti ex F.J. Ruprecht {nomen}
- PTILERPA W.H. Harvey {section of Caulerpa}
- PTILINOS G. Targioni Tozzetti
- PTILOBALLIA F. Schmitz {subgenus of Ballia}
- PTILOCLADIA O.W. Sonder
- Ptilocladia agardhiana (Harvey) Wollaston
- Ptilocladia australis (Harvey) Wollaston
- Ptilocladia divaricata (Okamura) T. Yoshida
- Ptilocladia japonica Itono
- PTERYGOPHORA Ruprecht
- Ptilocladia okiensis M. Kajimura
- Ptilocladia pulchra Sonder
- Ptilocladia pulchra f. teretiuscula J. Agardh
- Ptilocladia vestita (Harvey) Wollaston
- PTILOCLADIOPSIS G.D.W. Berthold
- Ptilocladiopsis horrida G.D.W. Berthold
- PTILONIA W.H. Harvey {sect. of Plocamium}
- PTILONIA (W.H. Harvey) J.G. Agardh
- Ptilonia australasica Harvey
- Ptilonia intermedia Lucas
- Ptilonia magellanica (Montagne) J. Agardh
- Ptilonia mooreana Levring
- Ptilonia okadae_('Okadai') Yamada
- Ptilonia willana Lindauer
- PTILOPHORA F.T. Kützing
- PTILOPHORA Kützing
- Ptilophora beckeri E.M. Holmes
- Ptilophora biserrata (Boergesen) R. E. Norris
- Ptilophora diversifolia (Suhr) Papenfuss
- Ptilophora helenae (Dickinson) R. E. Norris {invalid}
- Ptilophora hildebrandtii (Hauck) R.E. Norris
- Ptilophora irregularis (Akatsuka & Masaki) R. E. Norris
- Ptilophora mediterranea (H. Huvé) R. E. Norris
- Ptilophora pectinata (A. & E.S. Gepp) R. E. Norris
- Ptilophora pinnatifida J. Agardh
- Ptilophora prolifera (Harvey) J. Agardh
- Ptilophora pterocladioides A.V. Andriamampandry
- Ptilophora rhodoptera R. E. Norris
- Ptilophora rumpii (Dickinson) R. E. Norris
- Ptilophora scalaramosa (Kraft) R. E. Norris
- Ptilophora spissa (Suhr) Kützing
- Ptilophora subcostata (Okamura) R. E. Norris
- PTILOPOGON J. Reinke
- Ptilopogon botryocladus (Hooker & Harvey) Reinke
- Ptilopogon botryocladus (Hooker & Harvey) Reinke
- PTILOSIPHONIA J.G. Agardh {subgenus}
- PTILOSIPHONIA (J. Agardh) Ardissone {section}
- PTILOTA C.A. Agardh
- PTILOTA (C.A. Agardh) S.F. Gray {subgenus}
- PTILOTA C. Agardh
- Ptilota articulata J.G. Agardh
- Ptilota asplenioides (Esper) C.A. Agardh
- Ptilota australisica J.G. Agardh
- Ptilota californica F.J. Ruprecht ex W.H. Harvey
- Ptilota californica var. concinna Harvey
- Ptilota californica f. gracilis E. S. Zinova
- Ptilota californica f. media E. S. Zinova
- Ptilota californica f. pulchra E. S. Zinova
- Ptilota californica f. robusta E. S. Zinova
- Ptilota californica f. typica E.S. Sinova
- Ptilota californica f. typica E.S. Sinova
- Ptilota confluens Reinsch
- Ptilota coralloidea ('corallidea') J. Agardh
- Ptilota cryptocarpa Holmes
- Ptilota densa C.A. Agardh
- Ptilota dentata Okamura
- Ptilota eatonii_('eatoni') G. Dickie
- Ptilota eatonii_('eatoni') G. Dickie
- Ptilota elegans T. Bonnemaison
- Ptilota fergusonii ('fergusoni') Grunow
- Ptilota filicina F.J. Ruprecht
- Ptilota filicina J.G. Agardh
- Ptilota filicina (Farlow) J. Agardh {supplanted}
- Ptilota filiformis (C. Agardh) Kützing
- Ptilota flaccida (Turner) C. Agardh
- Ptilota flaccida var. gracilis Suhr
- Ptilota flaccida var. firma Rudolphi
- Ptilota formosa Kützing
- Ptilota formosa var. brasiliensis Kützing
- Ptilota formosissima Montagne
- Ptilota gunneri P.C. Silva, C.A. Maggs & M.H. Hommersand
- Ptilota hannafordii Harvey
- Ptilota harveyi J.D. Hooker
- Ptilota harveyi var. pectinata J.D. Hooker
- Ptilota hypnoides W.H. Harvey
- Ptilota jeannerettii Harvey
- Ptilota pappeana J. Agardh {Msc.}
- Ptilota pappeana (Kützing) J. Agardh
- Ptilota parva G. Dickie
- Ptilota pectinata W.H. Harvey
- Ptilota pectinata (J.E. Gunnerus) F.R. Kjellman
- Ptilota pectinata f. integerrima (Ruprecht) F.R. Kjellman
- Ptilota pectinata f. kjellmanii ('kjellmani') Foslie
- Ptilota pectinata f. litoralis F.R. Kjellman
- Ptilota pectinata f. tenuis F.S. Collins
- Ptilota pectinata f. tenuis F.S. Collins
- Ptilota pectinata subf. densa Foslie
- Ptilota pectinata subf. distans Foslie
- Ptilota pellucida W.H. Harvey
- Ptilota phacelocarpoides A. Zinova
- Ptilota pinnatifida Suhr
- Ptilota pinnatifolia Suhr
- Ptilota pinnatifolia Suhr card 2
- Ptilota plumosa (W. Hudson) C.A. Agardh
- Ptilota plumosa var. arbuscula Cramer
- Ptilota plumosa f. subglabra Cramer
- Ptilota plumosa f. tomentosa Cramer
- Ptilota plumosa f. arctica Gobi
- Ptilota plumosa var. asplenioides (Esper) C. Agardh
- Ptilota plumosa var. capillaris (Turner) W. J. Hooker
- Ptilota plumosa var. elegans Cramer
- Ptilota plumosa f. pilosa Cramer
- Ptilota plumosa f. subglabra Cramer
- Ptilota plumosa f. tomentosa Cramer
- Ptilota plumosa var. filicina W.G. Farlow
- Ptilota plumosa var. filiformis C. Agardh
- Ptilota plumosa var. formosa (Kützing) Kützing
- Ptilota plumosa f. intermedia E.S. Sinova
- Ptilota plumosa var. pectinata F.T. Kützing
- Ptilota plumosa var. plumula Cramer
- Ptilota plumosa f. glabra Cramer
- Ptilota plumosa f. tomentosa Cramer
- Ptilota plumosa var. ramosa Cramer
- Ptilota plumosa var. serrata (F.T. Kützing) F.T. Kützing
- Ptilota plumosa var. tenerrima Ruprecht
- Ptilota plumosa f. tenerrima (Ruprecht) E.S. Sinova
- Ptilota plumosa var. tenuissima C. Agardh
- Ptilota plumosa f. subglabra Cramer
- Ptilota plumosa f. typica C.J. Gobi
- Ptilota plumosa f. typica E.S. Sinova
- Ptilota rhodocallis Harvey {nom. nov.}
- Ptilota rhodocallis Harvey
- Ptilota schousboei Bornet
- Ptilota sericea (Gmelin) W.H. Harvey
- Ptilota serrata F.T. Kützing
- Ptilota setigera W.H. Harvey {mscr.}
- Ptilota setigera (Kützing) 'Harvey mscr.'
- Ptilota siliculosa Harvey
- Ptilota striata W.H. Harvey
- Ptilota subvilifera J. Agardh
- Ptilota tenuis (F.S. Collins) J.H. Kylin
- PTILOTHAMNION G.A. Thuret {tribus}
- PTILOTHAMNION Thuret
- PTILOTHAMNION (Thuret) Ardissone {Section}
- Ptilothamnion bipinnatum (Collins & Hervey) M.A. Howe
- Ptilothamnion butlerae ('butleriae') Collins
- Ptilothamnion cladophorae (Yamada & Tanaka) Feldmann-Mazoyer
- Ptilothamnion codicola ('codicolum') (Dawson) Abbott
- Ptilothamnion lucifugum Cotton
- Ptilothamnion microptilum (Grunow) Schiffner
- Ptilothamnion pectinatum (Montagne) Laing
- Ptilothamnion pluma (L.W. Dillwyn) G.A. Thuret
- Ptilothamnion pluma f. minor Nasr
- Ptilothamnion polysporum Gordon-Mills & Wollaston
- Ptilothamnion pusillum (Okamura & Segawa) Itono
- Ptilothamnion richardsii Skuja
- Ptilothamnion rupicola ('rupicolum') Gordon-Mills
- Ptilothamnion schmitzii Heydrich
- Ptilothamnion sphaericum (P. Crouan & H. Crouan ex J. Agardh) C.A. Maggs & M.H. Hommersand
- Ptilothamnion subsimplex Gordon
- PTILOTHAMNIONOPSIS P. Dixon
- Ptilothamnionopsis lejolisea (W.G. Farlow) P. Dixon
- PTYCHODES G.R. Cedergren {section}
- PTYCHODISCUS E. O'Meara
- PTYCHODISCUS Stein
- Ptychodiscus carinatus Kofoid
- Ptychodiscus inflatus Pavillard
- Ptychodiscus lineatus O'Meara
- Ptychodiscus noctiluca Stein
- Ptychodiscus noctiluca var. fimbriatus Murray & Whitton
- PTYCHOSTOMA E.E. Tyzzer
- Ptychostoma bonasae Tyzzer
- PUGETIA J.H. Kylin
- Pugetia chilensis (J. Agardh) Kylin
- Pugetia delicatissima R.E. Norris
- Pugetia firma J.H. Kylin
- Pugetia fragilissima J.H. Kylin
- Pugetia harveyana (J. Agardh) R.E. Norris
- Pugetia japonica J.H. Kylin
- Pugetia kylinii Baardseth
- Pugetia mexicana Dawson
- Pugetia palmatifolia J. Tokida
- Pugetia porphyroidea (Schmitz ex Holmes) R.E. Norris
- Pugetia sanguinea (Montagne) Kylin
- PULCHRASPHAERA T.R. Deason
- Pulchrasphaera macronucleata Deason
- PULINA M. Adanson
- PULVERARIA E. Acharius
- Pulveraria aeruginosa (Hudson) E. M. Fries
- Pulveraria albo-flava Flörke
- Pulveraria byssoidea Flörke
- Pulveraria chlorina (Acharius) Acharius
- Pulveraria chlorina var. aurea Flörke
- Pulveraria flava (Acharius) Flörke
- Pulveraria incana (L.) Flörke
- Pulveraria latebrarum (Acharius) Acharius
- PULVINALARIA A. Borzì
- PULVINARIA L. Reinhard
- PULVINARIA Fournier {info}
- Pulvinaria algicola Reinhard
- Pulvinaria giraudii (Derbès & Solier) Bourrelly
- Pulvinella californica G.J. Hollenberg, inval.
- PULVINIA G.J. Hollenberg
- Pulvinia epiphytica G.J. Hollenberg
- PULVINOCLADUS M.O.P. Iyengar
- Pulvinocladus rivularis M.O.P. Iyengar
- PULVINOCOCCUS E. Tschermak
- Pulvinococcus gomphonematis (K.I. Meyer) E. Tschermak
- Pulvinococcus praecipitans E. Tschermak
- PULVINOMORPHA Timofeev
- Pulvinomorpha angulata Timofeev
- Pulvinomorpha mitis Timofeev
- PULVINOSPHAERIDIUM A. Eisenack
- Pulvinosphaeridium cochinum (Cramer) F. Martin
- Pulvinosphaeridium oligoprojectum Downie
- Pulvinosphaeridium parvum A. R. Loeblich Jr.
- Pulvinosphaeridium pulvinellum Eisenack
- PULVINULARIA A. Borzì
- PULVINULARIA Borzì
- Pulvinularia suecica Borzì
- PUNCTARIA R.K. Greville
- PUNCTARIA {subgenera}
- Punctaria angustifolia Kützing
- Punctaria baltica (F.T. Kützing) E.A.L. Batters
- Punctaria caespitosa J. Agardh
- Punctaria calendulifolia ('calendulaefolia') (Gmelin) Trevisan
- Punctaria chartacea W.A. Setchell & N.L. Gardner
- Punctaria conglomerata Yamada & Iwamoto
- Punctaria crispata (Kützing) Trevisan
- Punctaria cuneata (Suhr) Trevisan
- Punctaria debilis (C. Agardh) V.B.A. Trevisan
- Punctaria expansa W.A. Setchell & N.L. Gardner
- Punctaria fascia (Müller) Trevisan
- Punctaria fissa (F.T. Kützing) V.B.A. Trevisan
- Punctaria fissilis W.A. Setchell & N.L. Gardner
- Punctaria flaccida M. Nagai
- Punctaria glacialis Rasenvinge
- Punctaria hesperia Setchell & Gardner
- Punctaria hiemalis J.H. Kylin
- Punctaria kinoshitae Yamada & Iwamoto
- Punctaria laminariae (Lyngbye) Crouan fr.
- Punctaria laminarioides Crouan fr.
- Punctaria lanceolata (Kützing) Hariot
- Punctaria lanceolata (Kützing) Trevisan
- Punctaria latifolia R.K. Greville
- Punctaria latifolia f. angustifolia (Kützing) Boergesen
- Punctaria latifolia f. crispata (Kützing) Collins
- Punctaria latifolia f. dictyotoides Chalon
- Punctaria latifolia var. genuina Batters
- Punctaria latifolia var. lanceolata [Grun.]
- Punctaria latifolia var. lanceolata Batters
- Punctaria latifolia var. tenuissima (Harvey) Chalon
- Punctaria latifolia var. zosterae Le Jolis
- Punctaria lobata (Saunders) W.A. Setchell & N.L. Gardner
- Punctaria mageshimensis Tanaka
- Punctaria multifida Anand
- Punctaria occidentalis W.A. Setchell & N.L. Gardner
- Punctaria orbiculata C.C. Jao
- Punctaria pilosa I. Umezaki
- Punctaria plantaginea (A.W. Roth) R.K. Greville
- {Scanning error}
- Punctaria plantaginea var. crouanii ('crouani') Thuret
- Punctaria plantaginea var. linearis Foslie
- Punctaria plantaginea var. rubescens Batters
- Punctaria plantaginea var. rugosa W. R. Taylor
- Punctaria plantaginea f. typica Kjellman
- Punctaria projecta Yamada
- Punctaria pusilla (Carmichael) Crouan fr.
- Punctaria rubescens (H.C. Lyngbye) V.B.A. Trevisan
- Punctaria rubescens J. Agardh
- Punctaria stipitata F.S. Collins
- Punctaria tenuis Yamada & Iwamoto
- Punctaria tenuissima (C.A. Agardh) R.K. Greville
- Punctaria undulata J.G. Agardh
- Punctaria winstonii C.L. Anderson
- PUNCTASTRIATA D.M. Williams & F.E. Round
- Punctastriata linearis D.M. Williams & F.E. Round
- Punctastriata ovalis D.M. Williams & F.E. Round
- PUNCTULATA R.M. Patrick {subgenus}
- PUSILLINA Bory
- PUSTULARIA A.G. Vologdin
- Pustularia taeniata Vologdin
- Pustularia vetusta Vologdin
- PUSTULISPHAERIDIUM R. Wicander
- Pustulisphaeridium levibrachium Wicander
- PYCNOBRYON De Fromentel
- Pycnobryon socialis De Fromentel
- PYCNOCOCCUS R.R.L. Guillard
- Pycnococcus guillardii S.M. Myklestad
- Pycnococcus provasolii R. Guillard
- PYCNOMONAS C.A. Hoare {subgenus}
- PYCNOPHYCUS Kützing
- PYCNOPHYCUS (Kützing) J. Agardh {section of}
- Pycnophycus brassiciformis ('brassicaeformis') Kützing
- Pycnophycus levigatus Kützing
- Pycnophycus sisymbrioides Kützing
- Pycnophycus tuberculatus (Hudson) Kützing
- Pycnophycus tuberculatus var. sisymbrioides (Kützing) Grunow
- PYCNOPORIDIUM H. Yabe & S. Toyama
- Pycnoporidium concentricum R. Endo
- Pycnoporidium dilatum R. Endo
- Pycnoporidium elongatum R. Endo & Horiguchi
- Pycnoporidium levantinum G.H. Johnson
- Pycnoporidium lobatum Yabe & Toyama
- Pycnoporidium ortonelloides R. Endo
- Pycnoporidium sinuosum G.H. Johnson & Konishi
- Pycnoporidium toyamae ('toyamai') R. Endo
- PYCNOSTROMA G.J.E. Gürich
- Pycnostroma densius Gürich
- Pycnostroma spongilliferum Gürich
- PYCNOTHAMNION P.J.L. Dangeard
- Pycnothamnion crustaceum (P. Dangeard) P. Dangeard
- PYGMAEA J. Stackhouse
- Pygmaea lichenoides (Goodenough & Woodward) Stackhouse
- PYLAIELLA D.S. Leman
- PYLAIELLA {see Pilayella}
- {Scanning error}
- PYRAMICHLAMYS H. Ettl & O. Ettl
- Pyramichlamys acuta (Schiller) H. Ettl & O. Ettl
- Pyramichlamys conica Ettl
- Pyramichlamys cordiformis (Carter) H. Ettl & O. Ettl
- Pyramichlamys cordiformis f. quadrata Ettl
- Pyramichlamys crassifilis (Schiller) H. Ettl & O. Ettl
- Pyramichlamys cylindraceae (Schiller) H. Ettl & O. Ettl
- Pyramichlamys depressa (Butcher) Ettl
- Pyramichlamys dissecta (Tiffany) H. Ettl & O. Ettl
- Pyramichlamys excavata (Massart) H. Ettl & O. Ettl
- Pyramichlamys globosa (Schiller) H. Ettl & O. Ettl
- Pyramichlamys irregularis (Conrad & Kufferath) H. Ettl & O. Ettl
- Pyramichlamys konion (Conrad & Kufferath) Ettl
- Pyramichlamys massartii (Conrad & Kufferath) H. Ettl & O. Ettl
- Pyramichlamys protuberans (Pascher) H. Ettl & O. Ettl
- Pyramichlamys quadrangulata (Pascher) H. Ettl & O. Ettl
- Pyramichlamys salina (Wislouch) H. Ettl & O. Ettl
- Pyramichlamys semiglobosa (Pascher) H. Ettl & O. Ettl
- Pyramichlamys subcordiformis (Schiller) H. Ettl & O. Ettl
- Pyramichlamys vectensis (Conrad & Kufferath) H. Ettl & O. Ettl
- Pyramichlamys wettsteinii (Schiller) H. Ettl & O. Ettl
- PYRAMIDIUM W.B. Turner {subgenus of Cosmarium}
- PYRAMIDIUM R.F.A. Clarke & J.-P. Verdier
- Pyramidium alatum (Harvey & Eisenack) Clarke & Verdier
- PYRAMIDOCHRYSIS A.A. Pascher
- Pyramidochrysis modesta Pascher
- Pyramidochrysis splendens Pascher
- PYRAMIDOCOCCUS M.O.P. Iyengar
- Pyramidococcus indicus Iyengar
- PYRAMIDOMONAS F. Stein
- PYRAMIDOMONAS Averintsev
- Pyramidomonas abdida Skvortzov
- Pyramidomonas abnato Skvortzov
- Pyramidomonas acuta Pascher
- Pyramidomonas agamae Averintsev
- Pyramidomonas amylifera Conrad
- Pyramidomonas conica Conrad
- Pyramidomonas conica Taft
- Pyramidomonas denticulata Pascher
- Pyramidomonas elongata Pascher
- Pyramidomonas geitleri Conrad
- Pyramidomonas hyalina Skvortzov
- Pyramidomonas impressus Schiller
- Pyramidomonas inconstans 'Hodgett'
- Pyramidomonas minima Pascher
- Pyramidomonas nansenii ('nanseni') Braarud
- Pyramidomonas octostriata Pascher
- Pyramidomonas oltmannsii ('oltmannsi') Schiller
- Pyramidomonas ovalis Conrad
- Pyramidomonas quadricauda Pascher
- Pyramidomonas quadricostata Pascher
- Pyramidomonas reticulata (Korshikov) Korshikov
- Pyramidomonas salina Kiselev
- Pyramidomonas schmardae Stein
- Pyramidomonas semiglobosa Pascher
- Pyramidomonas splendidissima Pascher
- Pyramidomonas tetrarhynchus (Schmarda) Stein
- Pyramidomonas utrajectina 'Bretschneider'
- Pyramidomonas variabile Skvortzov
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