Index Nominum Algarum Image Index
571 CARD IMAGES
beginning with THALASSIOTHRIX Cleve & Grunow
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- THALASSIOTHRIX Cleve & Grunow
- Thalassiothrix acuta Karsten (CAS)
- Thalassiothrix africana Woodhead & Tweed (CAS)
- Thalassiothrix antarctica Schimper
- Thalassiothrix antarctica var. echinata Karsten (CAS)
- Thalassiothrix antarctica f. japonica Skvortsov
- Thalassiothrix antarctica var. tenuis [Schimper]
- Thalassiothrix curvata Castracane (CAS)
- Thalassiothrix delicatula E. Cupp
- Thalassiothrix elongata Grunow
- Thalassiothrix elongata var. filiformis J. Brun
- Thalassiothrix fallax Cleve-Euler (CAS)
- Thalassiothrix fossilis Jurilj (CAS)
- Thalassiothrix frauenfeldii (Grunow) Grunow
- Thalassiothrix frauenfeldii var. arctica Grunow
- Thalassiothrix frauenfeldii f. curvata (Castracane) Jørgensen (CAS)
- Thalassiothrix frauenfeldii var. javanica Grunow
- Thalassiothrix frauenfeldii f. curvata (Castracane) Jørgensen (CAS)
- Thalassiothrix frauenfeldii var. tenella Grunow
- Thalassiothrix gibberula Hasle (CAS)
- Thalassiothrix gibberula G.R. Hasle
- Thalassiothrix heteromorpha Karsten (CAS)
- Thalassiothrix heteromorpha var. mediterranea (Pavillard) Hallegraeff (CAS)
- Thalassiothrix javanica (Grunow) Cleve
- Thalassiothrix longissima Cleve & Grunow
- Thalassiothrix longissima var. antarctica Cleve & Grunow
- Thalassiothrix longissima var. gibberula (Hasle) Hallegraeff (CAS)
- Thalassiothrix longissima f. gracilis Ostenfeld
- Thalassiothrix marina Grunow
- Thalassiothrix mediterranea Pavillard (CAS)
- Thalassiothrix mediterranea var. pacifica E. Cupp
- Thalassiothrix miocenica H. J. Schrader
- Thalassiothrix monospina H. J. Schrader
- Thalassiothrix nitzschioides (Grunow) Grunow
- Thalassiothrix nitzschioides f. curvata (Castracane) Jørgensen (CAS)
- Thalassiothrix nitzschioides var. javanica Grunow
- Thalassiothrix nitzschioides var. lanceolata Grunow
- Thalassiothrix nitzschioides var. obtusa Grunow
- Thalassiothrix primitiva Schrader (CAS)
- Thalassiothrix pseudonitzschioides G. Schuette & H. Schrader
- Thalassiothrix robusta (H. J. Schrader) F. Akiba
- Thalassiothrix rupta Mertz (CAS)
- Thalassiothrix sagittalis Mertz (CAS)
- Thalassiothrix sinensis Meister (CAS)
- Thalassiothrix vanhoeffenii Heiden
- THALASSIPHORA Eisenack & Gocht
- Thalassiphora balcanica N. Baltes
- Thalassiphora bononiensis Corradini
- Thalassiphora delicata Williams & Downie
- Thalassiphora dynamica (Morgenroth) Stover & Evitt
- Thalassiphora flammea Cookson & Eisenack
- Thalassiphora munda R. J. Davey & Verdier
- Thalassiphora patula (Williams & Downie) Stover & Evitt
- Thalassiphora pelagica (Eisenack) Eisenack & Gocht
- Thalassiphora petila Corradini
- Thalassiphora reticulata Morgenroth
- Thalassiphora spinifera (Cookson & Eisenack) Stover & Evitt
- Thalassiphora succincta Morgenroth
- Thalassiphora sueroi Pothe de Baldis
- Thalassiphora velata (Deflandre & Cookson) Eisenack & Gocht
- Thalassocharis bosquetii ('bosqueti') f. lata Miquel
- THALASSOCYSTIS Taggart & L. R. Parker
- Thalassocystis striata Taggart & L. R. Parker
- THALASSOMONAS Butcher
- Thalassomonas caeca Butcher
- Thalassomonas exurgens Butcher
- Thalassomonas minima Butcher
- Thalassomonas pusilla Butcher
- Thalassomonas semiglobata Butcher
- THALASSOMYCES Niezabitowski
- Thalassomyces albatrossi Wing
- Thalassomyces batei Niezabitowski
- Thalassomyces boschmae_('boschmai') (Nouvel) Boschma
- Thalassomyces capillosus (Fage) Boschma
- Thalassomyces fasciatus (Fage) Boschma
- Thalassomyces racemosus (Coutière) Boschma
- Thalassomyces spiczakovii Niezabitowski
- Thalassomyxa canariensis K.G. Grell
- THALASSOPAPPUS Kamptner
- Thalassopappus pellucidus Kamptner
- Thallites polydichotomus Prinada
- THALLOCHRYSIS Conrad
- THALLOCHRYSIS Conrad
- Thallochrysis litoralis Anand
- Thallochrysis litoralis Anand
- Thallochrysis pascheri Conrad
- THALLODESMIUM W. B. Turner
- Thallodesmium wallichianum W. B. Turner
- THALPOPHILA Borzì
- Thalpophila caldaria Emoto & Yoneda
- Thalpophila cossyrensis Borzì
- Thalpophila imperialis J. Copeland
- THAMNIASTRUM Reinsch
- THAMNIASTRUM (Reinsch) Hansgirg
- Thamniastrum cruciatum Reinsch
- Thamniastrum surchanensis Ergashev invalid
- THAMNIDIUM Thuret
- THAMNIDIUM \{also on card: subgenera by Kjellman\}
- Thamnidium floridulum (Dillwyn) Thuret
- Thamnidium intermedium Kjellman
- Thamnidium mesocarpum (Carm.) Kleen
- Thamnidium mesocarpum f. penicilliforme ('penicilliformis') Kjellman
- Thamnidium pallens (Zanardini) Hauck
- Thamnidium rothii (Turton) Thuret
- Thamnidium sparsum (Harvey) Kleen
- Thamnidium spetsbergense Kjellman
- Thamniochaete aculeata W. West & G. S. West
- Thamniochaete frutex Margalef
- THAMNIOCHAETE Gay
- Thamniochaete huberi Gay
- THAMNIOCHLORIS P. Dangeard
- Thamniochloris atroviridis ('atro-viridis') P. Dangeard
- Thamniochloris ochlochaetoides P. Dangeard
- Thamniochloris variabilis P. Dangeard
- THAMNISCUS Kjellman \{also on card: Subgenus of Thamnidium\}
- THAMNOCARPUS Kützing
- THAMNOCARPUS Harvey
- THAMNOCARPUS J. Agardh \{also on card: subgenus of Plocamium\}
- Thamnocarpus cornutus (Turner) Kützing
- Thamnocarpus glomuliferus J. Agardh
- Thamnocarpus griffithsioides J. Agardh
- Thamnocarpus gunnianus Harvey
- Thamnocarpus harveyanus J. Agardh
- Thamnocarpus laurencia Hooker f. & Harvey
- Thamnocarpus magellanicus (Montagne) Kützing
- Thamnocarpus mertensii (Greville) Kützing
- Thamnocarpus mollis E.M. Wollaston
- Thamnocarpus penicillatus (Harvey) J. Agardh
- Thamnocarpus ptilota Hooker f. & Harvey
- THAMNOCLADUS D. White
- Thamnocladus buddei Kräusel & Weyland
- Thamnocladus clarkei D. White
- Thamnocladus mosellae Kräusel & Weyland
- Thamnocladus passifrons A. Hollick
- THAMNOCLONIUM Kützing
- THAMNOCLONIUM J. Agardh \{also on card: section of Thamnoclonium\}
- THAMNOCLONIUM \{also on card: sections by J. Agardh\}
- THAMNOCLONIUM J. Agardh \{also on card: [subgen. or sect.] of Thamnoclonium\}
- THAMNOCLONIUM \{also on card: subgenera or sections by J. Agardh\}
- Thamnoclonium bunburyense J. Agardh
- Thamnoclonium candelabrum J. Agardh
- Thamnoclonium claviferum J. Agardh
- Thamnoclonium decipiens J. Agardh
- Thamnoclonium dichotomum (J. Agardh) J. Agardh
- Thamnoclonium dichotomum var. codioides J. Agardh
- Thamnoclonium flabelliforme Sonder
- Thamnoclonium harveyanum Sonder
- Thamnoclonium hirsutum Kützing
- Thamnoclonium hirsutum var. africanum Kützing
- Thamnoclonium hirsutum var. gracilius Kützing
- Thamnoclonium latifrons Endlicher & Diesing
- Thamnoclonium lemannianum Harvey
- Thamnoclonium marchesettioides J. Agardh
- Thamnoclonium natalense (J.E. Gray) J. Agardh
- Thamnoclonium procumbens Weber-van Bosse
- Thamnoclonium proliferum Sonder
- Thamnoclonium seminerve J. Agardh
- Thamnoclonium spongicola {err. cit.}
- Thamnoclonium spongioides J. Agardh
- Thamnoclonium squamarioides J. Agardh
- Thamnoclonium tissotii Weber-van Bosse
- Thamnoclonium treubii Weber-van Bosse
- THAMNOPHORA C. Agardh
- THAMNOPHORA J. Agardh \{also on card: subgenus of Plocamium\}
- THAMNOPHORA (C. Agardh) Harvey
- Thamnophora angusta J. Agardh
- Thamnophora brasiliensis Greville
- Thamnophora corallorhiza (Turner) C. Agardh
- Thamnophora cornuta (Turner) Greville
- Thamnophora costata (C. Agardh) J. Agardh
- Thamnophora cunninghamii Greville MSS
- Thamnophora dentata Suhr mscr.
- Thamnophora disticha Lindenberg {mss}
- Thamnophora hypnoides Bory
- Thamnophora magellanica Montagne
- Thamnophora mertensii Greville
- Thamnophora procera (C. Agardh) J. Agardh
- Thamnophora seaforthii (Turner) C. Agardh
- Thamnophora telfairiae Hooker & Harvey
- Thamnophora triangularis (Gmelin) C. Agardh
- Thamnophora triangularis C. Agardh \{also on card: frm. grac.\}
- THAMNOPHYLLIS R. E. Norris
- Thamnophyllis discigera (J. Agardh) R. E. Norris
- Thamnophyllis lacerata Womersley & R. E. Norris
- Thamnophyllis laingii (J. Agardh) R.E. Norris
- Thamnophyllis pocockiae R. E. Norris
- THARAMA Wray
- THAUMALEOCYSTIS Trevisan
- Thaumaleocystis deusta (Meneghini) Trevisan
- THAUMALEORHABDIUM Trevisan
- Thaumaleorhabdium unipunctatum (Lyngbye) Trevisan invalid
- THAUMASIA C. Agardh
- Thaumasia cunninghamii_('cunninghami') W.J. Hooker
- Thaumasia flava (L.) C. Agardh
- Thaumasia ovalis C. Agardh
- THAUMATELLA Falkenberg \{also on card: subgenus of Brongniartella\}
- THAUMATELLA Kylin
- Thaumatella disticha (Falkenberg) Kylin
- THAUMATODINIUM Böhm
- Thaumatodinium molischii ('Molischi') Böhm
- THAUMATOMASTIX Lauterborn
- Thaumatomastix bipartita Beech & Moestrup
- Thaumatomastix patelliformis (Takahashi & Hara) Beech & Moestrup
- Thaumatomastix sagittifera (Conrad) Beech & Moestrup
- Thaumatomastix salina (Birch-Andersen) Beech & Moestrup
- Thaumatomastix setifera (Lauterborn) Lemmermann
- Thaumatomastix tripus (Takahashi & Hara) Beech & Moestrup
- THAUMATOMONAS De Saedeleer
- Thaumatomonas lauterbornii ('lauterborni') De Saedeleer
- THAUMATONEMA Greville
- Thaumatonema barbadense Greville (CAS)
- THAUMATONEMA Lauterborn
- Thaumatonema complanata J. Brun
- Thaumatonema costata ('costatum') Greville (CAS)
- Thaumatonema setifera ('setiferum') Lauterborn
- THAUMATOPHYCUS Korde
- THAUMATOPHYCUS Korde
- Thaumatophycus furcatus Korde
- Thaumatophycus furcatus Korde
- THAUMATOPORELLA Pia
- Thaumatoporella occidentalis Johnson & Kaska
- Thaumatoporella parvovesiculifera (Raineri) Pia
- THAURILENS Pavillard
- Thaurilens denticulata Pavillard
- THECADINIUM Kofoid & Skogsberg
- Thecadinium dragescoi Balech
- Thecadinium ebriolum (E.C. Herdman) Kofoid & Skogsberg
- Thecadinium hirsutum Balech
- Thecadinium inclinatum Balech
- Thecadinium kofoidii ('kofoidi') (E. C. Herdman) Schiller
- Thecadinium kofoidii (Herdman) Larsen
- Thecadinium neopetasatum ('neo-petasatum') Saunders & Dodge
- Thecadinium petasatum (E. C. Herdman) Kofoid & Skogsberg
- Thecadinium semilunatum (Herdman) Dodge
- Thecadinium swedmarkii ('swedmarki') Balech
- THECOMONAS
- THEKADINIUM Dragesco
- THELEPHORA Persoon
- Thelephora sanguinea Persoon
- THELESPHAERA Pascher
- Thelesphaera alpina Pascher
- THEOBALDIA Heer
- Theobaldia circinalis Heer
- Theobaldia minor Heer
- Theobaldia raetica Heer
- THERMOCHARIS Ehrenberg
- Thermocharis cistula (Ehrenberg) Ehrenberg
- THERMOCOELIUM Kützing
- Thermocoelium minutum Kützing
- THESIOPHYLLUM J. Agardh \{also on card: subgenus of Cystoseira\}
- THIOCAPSA Winogradsky
- Thiocapsa floridana Uphof
- THIERSTEINIA S.W. Wise, Jr. & D.K. Watkins
- Thiersteinia ecclesiastica S.W. Wise, Jr. & D.K. Watkins
- THIOCHAETE Welsh
- Thiochaete chutteri Welsh
- THIOCYSTIS Winogradsky
- THIODENDRON J. B. Lackey & E. W. Lackey
- Thiodendron mucosum J. B. Lackey & E. W. Lackey
- THIODERMA Miyoshi
- Thioderma rubrum Miyoshi
- THIONEMA R. Kolkwitz
- Thionema vaginatum Kolkwitz
- THIOPHYSA Hinze
- Thiophysa volutans Hinze
- THIOPLOCA R. Lauterborn
- Thioploca ingrica Wislouch
- Thioploca schmidlei Lauterborn
- THIOSIPHON Klas
- Thiosiphon adriaticus_('adriaticum') Klas
- THIOSPHAERA Miyoshi
- Thiosphaera gelatinosa Miyoshi
- THIOSPHAERION Miyoshi
- Thiosphaerion violaceum Miyoshi
- THIOSPIRA Wislouch
- Thiospira elongata Perfiliev
- Thiospira propera Hama
- THIOSPIRILLOPSIS J. C. Th. Uphof
- Thiospirillopsis floridana Uphof
- THIOSPIRILLUM Winogradsky
- Thiospirillum agile var. polonicum ('polonica') Strzeszewski
- Thiospirillum coccineum Hama
- Thiospirillum crassum Hama
- Thiospirillum jenense f. maximum ('maxima') Szafer
- THIOTHRIX Winogradsky
- THIOTHRIX (Winogradsky) De Toni & Trevisan \{also on card: [subgen.] of Leptotrichia\}
- Thiothrix annulata Molisch
- Thiothrix longiarticulata Klas
- Thiothrix marina Molisch
- Thiothrix minutissima Uphof
- Thiothrix voukii Klas
- THIOVULUM Hinze
- Thiovulum majus Hinze
- Thiovulum minus Hinze
- Thiovulum muelleri ('Mülleri') (Warming) Lauterborn
- Thiovulum spora Skuja
- THORACOMONAS Korshikov
- Thoracomonas asiatica Skvortsov
- Thoracomonas aspera Pascher & Jahoda
- Thoracomonas feldmannii Bourrelly
- Thoracomonas irregularis Korshikov
- Thoracomonas korschikovii_('Korschikovi') Skvortzov, illeg.
- Thoracomonas korschikoffii Conrad
- Thoracomonas lateralis Pascher
- Thoracomonas obovata Skvortsov
- Thoracomonas phacotoides G. M. Smith
- Thoracomonas quadrata Skvortsov
- Thoracomonas sabulosa Korshikov
- Thoracomonas undulata Huber-Pestalozzi
- THORACOSPHAERA Kamptner
- Thoracosphaera albatrosiana Kamptner
- Thoracosphaera atoposa Chongyou Wang
- Thoracosphaera biglobosa Chongyou Wang
- Thoracosphaera candora Kamptner
- Thoracosphaera corsena Kamptner
- Thoracosphaera deflandrei Kamptner
- Thoracosphaera elegans Chongyou Wang
- Thoracosphaera ellipsoidea Kamptner
- Thoracosphaera fossata Jafar
- Thoracosphaera granifera D. Fütterer
- Thoracosphaera granulosa Kamptner
- Thoracosphaera hartmannii ('Hartmanni') (Schiller) Kamptner
- Thoracosphaera heimii ('heimi') (Lohmann) Kamptner
- Thoracosphaera imperforata Kamptner
- Thoracosphaera libituca Chongyou Wang
- Thoracosphaera narena Kamptner
- Thoracosphaera operculata M. N. Bramlette & E. Martini
- Thoracosphaera peculiaris Chongyou Wang
- Thoracosphaera pelagica Kamptner
- Thoracosphaera prolata Bukry & Bramlette
- Thoracosphaera pulchra Chongyou Wang
- Thoracosphaera rela Kamptner
- Thoracosphaera reliana Kamptner
- Thoracosphaera reticulata Jafar
- Thoracosphaera ricoseta Kamptner
- Thoracosphaera saxea Stradner
- Thoracosphaera simplex Chongyou Wang
- Thoracosphaera subtilis Kamptner
- Thoracosphaera tesserula D. Fütterer
- Thoracosphaera tuberosa Kamptner
- Thoracosphaera vasiformis ('vaseiformis') Chongyou Wang \{pcs\}
- Thoracosphaera wombatensis T.J. Bralower, P.R. Brown, & W.G. Siesser
- THORAKOCHLORIS Pascher
- Thorakochloris nygaardii B. Fott
- Thorakochloris planktonica B. Fott
- Thorakochloris pringsheimii (Bourrelly) Komárek
- Thorakochloris tetras Pascher
- Thorama proninae Korde
- THOREA Bory
- Thorea americana Kützing
- Thorea americana var. natalensis (Hering) Kützing
- Thorea andina Lagerheim & Möbius
- Thorea bachmannii Pujals
- Thorea brodensis Klas
- Thorea chilensis Montagne
- Thorea clavata Seto & Ratnasabapathy
- Thorea flagelliformis Zanardini
- Thorea gaudichaudii ('Gaudichaudi') C. Agardh
- Thorea grateloupii ('gratelupi') Bory
- Thorea hepatica Bory
- Thorea hispida Bory
- Thorea hispida (Thore) Desvaux
- Thorea lehmannii ('lehmanni') Hornemann
- Thorea okadai Yamada
- Thorea okadae_('Okadai') Yamada
- Thorea pluma Bory
- Thorea prowsei Ratnasabapathy & Seto
- Thorea ramosissima Bory nom. illeg.
- Thorea ramosissima var. fuscescens Rab.
- Thorea ramosissima var. minor C. Agardh
- Thorea riekei Bischoff
- Thorea riekei Bischoff
- Thorea trailii ('Traili') G. Dickie
- Thorea villosa Bory
- Thorea violacea Bory
- Thorea viridis Bory
- Thorea wrangelii C. Agardh
- Thorea zollingeri Schmitz
- THORELLA Gaillon
- THORELLA Briquet
- Thorella ramosissima (Bory) Gaillon
- THORINA Bory
- THORINIA Bory \{also on card: subgenus of Batrachospermum\}
- THORINIES Bory \{also on card: subgenus of Batrachosperma\}
- THOROSPHAERA Ostenfeld
- Thorosphaera elegans Ostenfeld
- Thorosphaera flabellata Halldal & Markali
- Thorosphaera splendens Lohmann
- THRANIUM Hovasse
- THRANIUM Hovasse
- Thranium crassipes Hovasse
- Thranium hirtum Hovasse
- Thranium patulum Deflandre
- Thranium tenuipes Hovasse
- Thranium tenuipes var. minus ('minor') Deflandre
- Thranium tiltiliense Frenguelli
- THRICHOCLADIA Zanardini
- Thrichocladia nostocoides Zanardini
- THROMBIUM Wallroth
- Thrombium Nostoc (L.) Wallroth
- THRYPTICOSPHAERA W.A.S. Sarjeant
- Thrypticosphaera magnifica (C.Q. He) W.A.S. Sarjeant
- THULEDINIUM S. Pocock & Sarjeant
- Thuledinium groenlandicum S. Pocock & Sarjeant
- THURETELLA Schmitz
- Thuretella schousboei (Thuret) Schmitz {invalid}
- THURETELLOPSIS Kylin
- Thuretellopsis japonica Segawa & Ichiki
- Thuretellopsis peggiana Kylin
- THURETIA Decaisne
- Thuretia australasica (Sonder) Parsons
- Thuretia bornetii Vickers
- Thuretia quercifolia Decaisne
- Thuretia teres Harvey
- THWAITESIA Montagne
- THWAITESIA Montagne
- Thwaitesia duriaei Montagne
- Thwaitesia duriaei var. germanica Kützing
- Thwaitesia germanica (Kützing) Kützing
- THYLAKOMONAS Schewiakoff
- Thylakomonas compressa Schewiakoff
- THYLAX Renault & Bertrand
- Thylax britannicus Renault & Bertrand
- THYRSOPORELLA C. W. Gümbel
- Thyrsoporella cancellata Gümbel
- Thyrsoporella cribrosa Gümbel
- Thyrsoporella hatigamoriensis Yabe & Toyama
- Thyrsoporella silvestrii Pfender
- THYSANOCLADIA Endlicher \{also on card: Section of Bonnemaisonia\}
- THYSANOCLADIA (Endlicher) Kützing
- Thysanocladia africana Schmitz
- Thysanocladia angustifolia J. Agardh
- Thysanocladia colensoi (Hooker & Harvey) J. Agardh
- Thysanocladia coriacea (Sonder) Harvey
- Thysanocladia coriacea (Kützing) Sonder herb.
- Thysanocladia costata Harvey
- Thysanocladia densa Sonder
- Thysanocladia dentata (Kützing) Schmitz
- Thysanocladia dentata (Kützing) Fr. Schmitz
- Thysanocladia dorsifera (C. Agardh) Harvey
- Thysanocladia harveyana J. Agardh
- Thysanocladia hildebrandtii Hauck
- Thysanocladia laxa Sonder
- Thysanocladia oppositifolia (C. Agardh) J. Agardh
- Thysanocladia pectinata Greville & Harvey
- Thysanocladia serrata Harvey in Sonder herb.
- Thysanocladia serrata Harvey
- THYSANOPLANTA Vologdin & Titorenko
- Thysanoplanta filamentosa Vologdin & Titorenko
- THYSANOPROBOLUS Loeblich Jr. & Tappan
- Thysanoprobolus polykion Loeblich Jr. & Tappan
- TIAROLITHUS Kamptner
- Tiarolithus diversistriatus Kamptner
- Tiarolithus laxus Kamptner
- Tiarolithus medusoides (Kamptner) Kamptner
- Tiarolithus obscurus (Deflandre & Fert) Hay & Towe
- Tiarolithus pacificus Kamptner
- Tiarolithus rectilineatus Kamptner
- TIAROPHORA J. Agardh
- Tiarophora australis J. Agardh
- Tibiella pliocenica (Héribaud & M. Peragallo) Patrick
- Tibiella punctata (Lewis) Patrick (CAS)
- Tibiella scala (Brun) Patrick (CAS)
- TICHOCARPUS Ruprecht
- Tichocarpus crinitus (Gmelin) Ruprecht
- Tichocarpus crinitus f. complanatus Nagai
- Tichocarpus crinitus f. linearis Nagai
- TIEFFALLENIA R. D. Wood \{also on card: Subsection of Nitella\}
- TIEFFALLENIA R. D. Wood \{also on card: Section of Nitella\}
- TIEFFALLENIA R. D. Wood \{also on card: Subgenus of Nitella\}
- TIELINGELLA Y.Z. Liang & R.C. Tsao
- Tielingella tielingensis Y.Z. Liang & R.C. Tsao
- TIFFANIELLA Doty & Meñez
- Tiffaniella apiculata Itono
- Tiffaniella capitata ('capitatum') (Bornet) Doty & Meñez
- Tiffaniella codicola (Yamada & Tanaka) Doty & Meñez
- Tiffaniella cymodoceae (Børgesen) Gordon
- Tiffaniella gorgonea_('gorgoneum') (Montagne) Doty & Meņez
- Tiffaniella phycophila ('phycophilum') (Taylor) Gordon
- Tiffaniella saccorhiza (Setchell & Gardner) Doty & Meñez
- Tiffaniella schmitziana (Barton) Bolton & Stegenga
- Tiffaniella snyderae (Farlow) Abbott
- Tiffaniella suyehiroi (Okamura) Kaneko
- Tiffaniella tamamiru (Segawa) Gordon
- TIKVAHIELLA Kraft & Gabrielson
- Tikvahiella candida Kraft & Gabrielson
- TILDENIA E. K. Kossinskaja
- Tildenia dura (Harvey) Poljansky
- Tildenia fuliginosa (Tilden) Kossinskaja
- Tildenia fuliginosa var. symmetrica Kossinskaja
- TILOPTERIS Kützing
- Tilopteris helgolandica P. Schmidt
- Tilopteris mertensii (J.E. Smith) Kützing
- TINGITANELLA Bourrelly & Gayral
- Tingitanella pasqualinii Bourrelly & Gayral
- TINOCLADIA Kylin
- Tinocladia australis (Harvey) Kylin
- Tinocladia crassa (Suringar) Kylin
- Tinocladia irregularis (Tilden & Fessenden) Kylin
- Tinocladia falklandica (Skottsberg) Kylin
- Tinocladia novae-zelandiae Kylin
- Tinocladia novae-zelandiae f. ramosissima Chapman
- TIRESIAS Bory
- Tiresias agardhii Derbès & Solier
- Tiresias bombycina (C. Agardh) Endlicher
- Tiresias bullosa (L.) [Fries]
- Tiresias crispa Bory
- Tiresias ericetorum (Roth) [Fries]
- Tiresias fugacissima (Roth) [Fries]
- Tiresias leprevostii Derbès & Solier
- Tiresias moniliformis Bory
- Tiresias montagnei Derbès & Solier
- Tiresias natalensis (Hering) J. E. Areschoug
- Tiresias nebulosa (C. Agardh) [Fries]
- Tiresias riparia (Roth) J. E. Areschoug
- Tiresias vesicata (Müller) [Fries]
- TITANEPHLIUM Nardo mscr.
- TITANEPHLIUM Nardo
- Titanephlium corallina Nardo mscr.
- Titanephlium corallina Nardo
- TITANEPHYLLUM 'Nardo'
- TITANODERMA Nägeli
- Titanoderma ascripticium (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma bermudense (Foslie & Howe) Woelkerling, Chamberlain, & Silva
- Titanoderma byssoides (Lamarck) Chamberlain & Woelkerling
- Titanoderma canescens (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma caspicum (Foslie) Woelkerling
- Titanoderma confine_('confinis') (P. Crouan & H. Crouan) Price, John, & Lawson
- Titanoderma conspectum (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma corallinae (P. Crouan & H. Crouan) Woelkerling, Chamberlain, & Silva
- Titanoderma cystoseirae (Hauck) Woelkerling, Chamberlain, & Silva
- Titanoderma dispar (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma geometricum (Me. Lemoine) Price, John, & Lawson
- Titanoderma hapalidioides (P. Crouan & H. Crouan) Price, John, & Lawson
- Titanoderma litorale (S. Suneson) C.F. Boudouresque & M.M. Perret-Boudouresque
- Titanoderma macrocarpum (Rosanoff) Chamberlain
- Titanoderma mutabile (Me. Lemoine) Woelkerling, Chamberlain, & Silva
- Titanoderma papillosum (Zanardini ex Hauck) Price, John, & Lawson
- Titanoderma polycephalum (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma polyclonum (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma prototypum (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma pustulatum (Lamouroux) Nägeli
- Titanoderma rasile (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma stephensonii (Me. Lemoine) Woelkerling, Chamberlain, & Silva
- Titanoderma tessellatum (Me. Lemoine) Woelkerling, Chamberlain, & Silva
- Titanoderma tumidulum (Foslie) Woelkerling, Chamberlain, & Silva
- Titanoderma verrucatum (Lamouroux) Chamberlain
- TITANOPHORA J. Agardh \{also on card: section of Halymenia\}
- TITANOPHORA (J. Agardh) J. Feldmann
- TITANOPHORA Børgesen
- Titanophora calcarea (Okamura) Børgesen
- Titanophora incrustans (J. Agardh) Børgesen
- Titanophora marianensis Itono & Tsuda
- Titanophora mauritiana Børgesen
- Titanophora palmata Itono
- Titanophora pikeana (Dickie) J. Feldmann
- Titanophora pikeana (Dickie) Børgesen
- Titanophora pulchra Dawson
- Titanophora submarina K.E. Bucher & J.N. Norris
- Titanophora weberae Børgesen
- TOKIDADENDRON Wynne
- Tokidadendron ambiguum_('ambigua') (Gardner) Wynne
- Tokidadendron bullatum_('bullata') (Gardner) Wynne
- Tokidadendron kurilense_('kurilensis') (Ruprecht) Perestenko
- Tokidadendron kurilense subsp. japonicum L.P. Perestenko, invalid
- TOKIDAEA Yoshida
- Tokidaea chilkatensis Lindstrom & Wynne
- Tokidaea corticata (Tokida) Yoshida
- Tokidaea hirta Perestenko
- Tokidaea serrata (Wynne) Lindstrom & Wynne
- Tokidaea villosa (M. J. Wynne) L. P. Perestenko