The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense). The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
A working list of algal type specimens at UC is available here
Results from INA database
| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Amphiprora fulva | A.S. Donkin | image | ||
| Avrainvillea fulva | (M.A. Howe) D.S. Littler & M.M. Littler | Phycologia | 31: 387 | 1992 |
| Avrainvillea nigricans f. fulva | M.A. Howe in Collins, Holden, & Setchell | Phycoth. Bor.-Amer.: | no. 1480 | 1908 |
| Bacillaria fulva | C.L. Nitzsch | image | ||
| Bangia viridifulva_('viridi-fulva') | Schousboe | image | ||
| Bichatia fulva | (Kützing) C.E.O. Kuntze | image | ||
| Bichatia fulva | (Kützing) Kuntze | Rev. Gen. Pl. | 2: 886 | 1891 |
| Biddulphia fulva | C.S. Boyer | image | ||
| Byssus fulva | Hudson | image | ||
| Chlamydomonas ulvaensis | R.A. Lewin | image | ||
| Chlorosaccus ulvaceus | Messikommer & Vischer | image | ||
| Chorda tomentosa f. subfulva | Foslie | image | ||
| Chroomonas fulva | (Butcher) Butcher | image | ||
| Conferva aureofulva_('aureo-fulva') | Kützing | image | ||
| Conferva fulva | Hudson | image | ||
| Conferva fulva | Schousboe | image | ||
| Cryptochrysis fulva | R.W. Butcher | J. Mar. Biol. Assoc. U.K. | 31: 185, pl. II: figs. 43-45 | 1952 |
| Cymbella fulva | (Kützing) Brebisson & Godey | image | ||
| Cymbella fulva | (Nitzsch) C. Agardh | image | ||
| Cymbophora fulva | (Kützing) Brébisson | Mém. Soc. Acad. Arg. Industr. Falaise | 1: 40 [14] | 1838 |
| Cymbophora fulva | Brebisson | image | ||
| Denticula fulva | Gregory | image | ||
| Denticula fulva | W. Gregory | Transactions of the Royal Society of Edinburgh | 21: 496, pl. X: fig. 38 | 1857 |
| Dickieia ulvacea | Berkeley ex Kützing | image | ||
| Dictyosphaeria ulvacea | Kützing | Diagn. u. Bemerk.: | 12 | 1863 |
| Dictyosphaeria ulvacea | Kützing | image | ||
| EHRENBERGIULVA | A. Witkowski, H. Lange-Bertalot, & D. Metzeltin in A. Witkowski & H. Lange-Bertalot | Diatom Research | 19: 143 | 2004 |
| Ehrenbergiulva granulosa | (Grunow) A. Witkowski, H. Lange-Bertalot, & D. Metzeltin in A. Witkowski & H. Lange-Bertalot | Diatom Research | 19: 143 | 2004 |
| Ehrenbergiulva hauckii | (Grunow) A. Witkowski, H. Lange-Bertalot, & D. Metzeltin in A. Witkowski & H. Lange-Bertalot | Diatom Research | 19: 144 | 2004 |
| Eleutheropyxis fulva | Scherffel | image | ||
| Frustulia fulva | (Ehrenberg) Brébisson | image | ||
| Frustulia fulva | Brébisson | image | ||
| Frustulia fulva | Brébisson | image | ||
| Frustulia fulva | Kützing | Linnaea | 8: 541, pl. 13: fig. 8 | 1834 |
| Frustulia fulva | Kützing | image | ||
| Frustulia ulva | (Nitzsch) C.A. Agardh | image | ||
| Gloeocapsa fulva | Kützing | image | ||
| Haematococcus uva_('ulva') | (O.F. Müller) Dalla Torre & Sarnthein | Algen Tirol, Vorarlberg und Liechtenstein: | 30 | 1901 |
| Hydrococcus ulvaceus | Kützing | Phyc. gen.: | 177, pl. 3: fig. VIII | 1843 |
| Hydrococcus ulvaceus | Kützing | image | ||
| Laminaria atro-fulva | J. Agardh | image | ||
| Laminaria nigripes var. atrofulva | (J. Agardh) Rosenvinge | image | ||
| Lyngbya aureo-fulva | W. West & G.S. West | J. Bot. [London] | 35: 298 | 1897 |
| Lyngbya fulva | Harvey | image | ||
| Lyngbya fulva | Harvey | image | ||
| Merismopedia elegans var. ulvacea | Bernard | image | ||
| Navicula fulva | (Nitzsch) Ehrenberg | image | ||
| Navicula fulva | Ehrenberg | image | ||
| Navicula fulva f. asymmetrica | Dippel | image | ||
| Navicula fulva var. modesta | Cleve-Euler | image | ||
| Navicula ulvacea | (Berkeley) Cleve | image | ||
| Omphalophyllum ulvaceum | J.L.A.K. Rosenvinge | image | ||
| Oncobyrsa rivularis var. ulvacea | (Kützing) Hansgirg | image | ||
| Oncobyrsa ulvacea | (Kützing) Rabenhorst | image | ||
| Oscillatoria viridi-fulva | Schousboe | image | ||
| Phycoseris ulva | Sonder | Bot. Zeit. | 3: 49 | 1845 |
| Pinnularia fulva | C.G. Ehrenberg | image | ||
| Pleurosiphonia fulva | C.G. Ehrenberg | image | ||
| Protococcus pluvialis f. ulvaceus | Kützing | image | ||
| Rhinomonas fulva | (R.W. Butcher) D.R.A. Hill & R. Wetherbee | Phycologia | 27: 359 | 1988 |
| Schizonema ulvaceum | (M.J. Berkeley ex F.T. Kützing) C.E.O. Kuntze | image | ||
| Sphacelaria fulva | Kützing | image | ||
| Stratonostoc commune f. ulvaceum | Elenkin | image | ||
| Tetraspora fulva | Brébisson mss. | image | ||
| Tetraspora ulvacea | Kützing | image | ||
| ULVA | C. Agardh | image | ||
| ULVA | C. Agardh | image | ||
| ULVA | C. Linnaeus | image | ||
| ULVA | Linnaeus | image | ||
| ULVA | Ray | image | ||
| ULVA sect. ENTEROMORPHA | (Link) Endlicher | Gen. Pl. Suppl. | 3: 19 | 1843 |
| ULVA sect. PHYCOSERIS | (Kützing) Harvey | Ner. Bor.-Amer. | 3: 58 | 1858 |
| ULVA tribus SOLENIA | C. Agardh | Sp. Alg. | 1: 417 | 1823 |
| ULVA | image | |||
| ULVA | image | |||
| ULVA | image | |||
| Ulva acanthophora | (Kützing) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 288 | 2003 |
| Ulva adhaerens | K. Matsumoto & S. Shimada | Europ. J. Phycol. | 50: 107, figs. 7, 13-19, 32-48, 60 | 2015 |
| Ulva adspersa | Roth | image | ||
| Ulva aetherea | Poiret | image | ||
| Ulva agarum | (Gmelin) Poiret | image | ||
| Ulva agarum | (Gmelin) Woodward | image | ||
| Ulva agarum | (S.G. Gmelin) Woodward | Trans. Linn. Soc. [London] | 3: 50 | 1797 |
| Ulva amamiensis | Tak. Tanaka | Mem. Fac. Fish. Kagoshima Univ. | 5: 104, fig. 2, pl. I, B; pl. II | 1956 |
| Ulva amamiensis | Tanaka | image | ||
| Ulva ambigua | DC. | image | ||
| Ulva ampullacea | Poiret | image | ||
| Ulva anandii | Amjad & Shameel | Pakistan J. Mar. Sci. | 2: 6, figs. 1a, 2 | 1993 |
| Ulva angusta | Setchell & Gardner | image | ||
| Ulva angusta | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 7: 283, pl. 27; pl. 31: fig. 1 | 1920 |
| Ulva aponina | Meneghini | image | ||
| Ulva appendiculata | Schousboe | image | ||
| Ulva aragoensis | (Bliding) C. Maggs in Krupnik et al. | Mediterranean Marine Science | 19: 138 | 2018 |
| Ulva arasakii | Chihara | image | ||
| Ulva arbuscula | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 465, figs. 4-12 | 2022 |
| Ulva ardreana | M. Cormaci, G. Furnari & G. Alongi | Bot. Mar. | 56: 409, figs. 1-3 | 2013 |
| Ulva armoricana | P. Dion, B. Reviers, & G. Coat | Eur. J. Phycol. | 33: 74, figs. 1-16 | 1998 |
| Ulva articulata | Hudson | Fl. Angl.: | 476 | 1762 |
| Ulva atomaria | Woodward | Trans. Linn. Soc. [London] | 3: 53 | 1797 |
| Ulva atropurpurea | Olivi | Opusc. Scelti Sci. e Arti | 14: 364 | 1791 |
| Ulva atropurpurea_('atro-purpurea') | Olivi | image | ||
| Ulva atroviridis | Levring | Lunds Univ. A\*orsskr., N.F., Avd. 2, | 34{9}: 4, fig. 2; pl. 1: fig. 1 | 1938 |
| Ulva attenuata | (C. Agardh) Naccari | Fl. Venet. | 6: 72 | 1828 |
| Ulva aurantiaca | Poiret | image | ||
| Ulva aureola | C. Agardh | Icon. Alg. Eur.: | no. XXIX, pl. 29 | 1829 |
| Ulva australis | Areschoug | Nova Acta R. Soc. Sci. Upsal., ser. 3, | 1: 370 | 1854 |
| Ulva australis | J.E. Areschoug | image | ||
| Ulva baltica | Areschoug mscr. | image | ||
| Ulva bartayresiana | (J.V.F. Lamouroux) C.F.P. Martius | image | ||
| Ulva batuffolosa | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 467, figs. 30-39 | 2022 |
| Ulva bellangeri | (Montagne) De Toni | image | ||
| Ulva bertolonii_('Bertoloni') | C. Agardh | image | ||
| Ulva bertolonii_(`bertoloni') | C. Agardh | Sp. Alg. | 1: 417 | 1823 |
| Ulva beytensis | Thivy & Sharma | Current Science | 35: 150, figs. 1-6 | 1966 |
| Ulva bifrons | Ardré | image | ||
| Ulva bifrons | Ardré | Revue Algologique, ser. 2 | 8: 297, figs. 1-14 | 1967 |
| Ulva billardieri | Mertens ex C. Agardh | image | ||
| Ulva binalis | Hassall | image | ||
| Ulva blidingii | G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 93, fig. 6 | 2014 |
| Ulva blyttii | Areschoug | Nova Acta Regiae Soc. Sci. Upsal. | 14: 412, pl. I-G | 1850 |
| Ulva blyttii | Areschoug in E.M. Fries | Summa Veg. Scand.: | 129 | 1845 |
| Ulva brevistipita | V.J. Chapman | image | ||
| Ulva brisbanensis | L. Kraft, G.T. Kraft, & R. Waller | J. Phycol. | 46: 1273, fig. 8 | 2010 |
| Ulva bulbosa | (Hudson) DC. | image | ||
| Ulva bulbosa | (Suhr) Trevisan | image | ||
| Ulva bulbosa | (Suhr) Trevisan | Prosp. Fl. Eug.: | 51 | 1842 |
| Ulva bulbosa | A.P. de Candolle in Lamarck & de Candolle | Fl. Franc\*,., ed. 3, | 2: 16 | 1805 (17.ix) |
| Ulva bulbosa | P. Beauv. | image | ||
| Ulva bulbosa | Palisot de Beauvois | Fl. Oware | 1: 20, pl. XIII: fig. 1 | 1805 (20.v) |
| Ulva bulbosa var. australasica | (J. Agardh) Hariot | Miss. Sci. Cap Horn | 5: 28 | 1889 |
| Ulva bulbosa var. ausustralasica | (J. Agardh) Hariot | image | ||
| Ulva bulbosa var. intestinalis | (Linnaeus) Hariot | Miss. Sci. Cap Horn | 5: 29 | 1889 |
| Ulva bulbosa var. peruana | Hariot | image | ||
| Ulva bulbosa var. peruana | Hariot | Miss. Sci. Cap Horn | 5: 28 | 1889 |
| Ulva bullata | A.P. de Candolle | Mém. Agric. Soc. Agric. Dép. Seine | 38 [tome 10]: 233 | 1807 |
| Ulva bullata | Poiret | image | ||
| Ulva bullosa | Roth | image | ||
| Ulva burmanica | (Zeller) De Toni | Sylloge algarum ... Vol. I. Chlorophyceae: | 116 | 1889 |
| Ulva burmanica | (Zeller) de Toni | image | ||
| Ulva bursa | (Linnaeus) Poiret | image | ||
| Ulva byssoides | Mertens in Jürgens | Alg. Aquat. | Fasc. 7: no. 1 | 1818 |
| Ulva caespitosa | Withering | A botanical arrangement of all the vegetables naturally growing in Great Britain ...: | 735, t. 10. f. 9 in Dillwyn | 1776 |
| Ulva calendulifolia | (S.G. Gmelin) J.F. Gmelin | image | ||
| Ulva californica | J.N.F. Wille in Collins, Holden, & Setchell | Phyc. Bor.-Amer.: | 611 | 1899 |
| Ulva calophylla | (Carm.) Sprengel | image | ||
| Ulva capensis | Areschoug | Phyceae capenses ...: | 15 | 1851 |
| Ulva capensis | J.E. Areschoug | image | ||
| Ulva capillacea | Schousboe | image | ||
| Ulva capillaris | Hudson | Fl. Anglica, ed. 2: | 571 | 1778 |
| Ulva capillaris | Poiret | image | ||
| Ulva capillata | S. Steinhagen in Steinhagen et al. | Journal of Applied Phycology | 35: 518, figs. 3, 4 | 2022 |
| Ulva caprina | J.E. Gunnerus | image | ||
| Ulva caryophyllaea | Mertens ex F. Weber & Mohr | Beitr. Naturk. | 1: 253 | 1805 |
| Ulva caudata | Schousboe | image | ||
| Ulva caulescens | J.V.F. Lamouroux | image | ||
| Ulva cavernosa | Forsskål | Flora aegyptiaco-arabica ... Post mortem auctoris edidit Carsten Niebuhr: | 187 | 1775 |
| Ulva cavernosa | P. Forssk. | image | ||
| Ulva cellulosa | Mertens mscr. | image | ||
| Ulva ceranoides | W. Withering | image | ||
| Ulva chaetomorphoides | (Børgesen) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 288 | 2003 |
| Ulva chapmanii | Molinari & Guiry | Notulae algarum | 184: 10 | 2021 |
| Ulva chaugulei_('chaugulii') | M.G. Kavale & M.A. Kazi in Kazi, Kavale, & Singh, | Phycologia | 55: 47, figs. 2-13 | 2016 |
| Ulva ciliata | (Hudson) DC. | image | ||
| Ulva ciliata | (Hudson) De Candolle in Lamarck & De Candolle, | Fl. france, ed. 3, | 2: 13 | 1805 |
| Ulva cinerea | Martens ex De Notaris | image | ||
| Ulva cirrosa | Schousboe | image | ||
| Ulva clathrata | (Roth) C. Agardh | Disp. Alg. | 2: 23 | 1811 |
| Ulva clathrata [s.v.] spinescens | (Kützing) Van Heurck | image | ||
| Ulva clathrata f. abbreviata | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 49 | 1863 |
| Ulva clathrata f. ambigua | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 49 | 1863 |
| Ulva clathrata f. foeniculacea | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 50 | 1863 |
| Ulva clathrata f. gracilis | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 50 | 1863 |
| Ulva clathrata f. nudiuscula | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 49 | 1863 |
| Ulva clathrata f. prostrata | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 50 | 1863 |
| Ulva clathrata f. robusta | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 51 | 1863 |
| Ulva clathrata f. tenuis | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 51 | 1863 |
| Ulva clathrata f. tenuissima | Van Heurck | Prodr. Alg. Mar. Iles Anglo-Normandes: | 22 | 1908 |
| Ulva clathrata subvar. spinescens | (Kützing) Van Heurck | Prodr. Alg. Mar. Iles Anglo-Normandes: | 22 | 1908 |
| Ulva clathrata var. abbreviata | Le Jolis | image | ||
| Ulva clathrata var. agardhiana | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 49 | 1863 |
| Ulva clathrata var. ambigua | Le Jolis | image | ||
| Ulva clathrata var. confervoidea | C. Agardh | Syn. Alg. Scand.: | 46 | 1817 |
| Ulva clathrata var. erecta | (Lyngbye) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 52 | 1863 |
| Ulva clathrata var. foeniculacea | Le Jolis | image | ||
| Ulva clathrata var. gracilis | Le Jolis | image | ||
| Ulva clathrata var. nudiuscula | Le Jolis | image | ||
| Ulva clathrata var. prostrata | Le Jolis | image | ||
| Ulva clathrata var. robusta | Le Jolis | image | ||
| Ulva clathrata var. rothiana | Le Jolis | image | ||
| Ulva clathrata var. rothiana | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 50 | 1863 |
| Ulva clathrata var. tenuis | Le Jolis | image | ||
| Ulva clathrata var. uncinata | (Lyngbye) C. Agardh | Sp. Alg. | 1: 423 | 1823 |
| Ulva clathratioides | L. Kraft, G.T. Kraft, & R. Waller | J. Phycol. | 46: 1273, fig. 5 | 2010 |
| Ulva clathrus | (Gmelin) Poiret | image | ||
| Ulva clathrus | (Gmelin) Woodward | image | ||
| Ulva clathrus | (S.G. Gmelin) Woodward | Trans. Linn. Soc. [London] | 3: 30 | 1797 |
| Ulva coccinea | Hudson | image | ||
| Ulva coccinea | Poiret | image | ||
| Ulva compressa | C. Linnaeus | image | ||
| Ulva compressa | Forssk. | image | ||
| Ulva compressa | Linnaeus | Sp. Pl. | 2: 1163 | 1753 |
| Ulva compressa var. byssoides | Mertens | image | ||
| Ulva compressa var. byssoides | Naccari | image | ||
| Ulva compressa var. crinita | (Nees) C. Agardh | Sp. Alg. | 1: 421 | 1823 |
| Ulva compressa var. crinita | (Roth) C. Agardh | image | ||
| Ulva compressa var. crispa | G. Zanardini | image | ||
| Ulva compressa var. crispata | (Lyngbye) Duby | Bot. Gall.: | 958 | 1830 |
| Ulva compressa var. fuscescens | C. Agardh nom. nud. | image | ||
| Ulva compressa var. prolifera | (O.F. Müller) C. Agardh | Sp. Alg. | 1: 421 | 1823 |
| Ulva compressa var. prolifera | (O.F. Mueller) C. Agardh | image | ||
| Ulva compressa var. purpurea | C. Agardh | image | ||
| Ulva compressa var. subarticulata | C. Agardh | image | ||
| Ulva confervoides | C. Linnaeus | image | ||
| Ulva confervoides | Forssk. | image | ||
| Ulva confervoides | P.K.A. Schousboe | image | ||
| Ulva confervoides | Schousboe | image | ||
| Ulva confervoides | Thuill. | image | ||
| Ulva conglobata f. densa | Kjellman | image | ||
| Ulva conglobata | Kjellman | Bih. Kongl. Svenska Vetensk.-Akad. Handl. | 23{Afd. III, 11}: 10, pl. 2: figs. 1-7; pl. 3: figs. 9-14 | 1897 |
| Ulva contorta | (Gmelin) DC. | image | ||
| Ulva contorta | P.K.A. Schousboe | image | ||
| Ulva cornea | Poiret | image | ||
| Ulva cornucopiae | (Kützing) J. Agardh | image | ||
| Ulva cornucopiae | (Kützing) J. Agardh | Alg. Syst. | 3: 163 | 1883 |
| Ulva cornucopiae | (Lyngbye) Trevisan | Prosp. Fl. Eug.: | 51 | 1842 |
| Ulva cornucopiae | Schousboe | image | ||
| Ulva cornuta | Lightfoot | image | ||
| Ulva costata | (Howe) Hollenberg | image | ||
| Ulva costata | (Howe) Hollenberg | Phycologia | 10: 283 | 1971 |
| Ulva costata | Wollny | image | ||
| Ulva covelongensis | Krishnamurthy & Joshi | image | ||
| Ulva covelongensis | V. Krishnamurthy & H. Joshi | Bot. J. Linn. Soc. [London] | 62: 126, figs. 4, 10, 16, pl. 1 | 1969 |
| Ulva crassa | Kjellman | image | ||
| Ulva crassa | Kjellman | image | ||
| Ulva crassa | V.J. Chapman | image | ||
| Ulva crassa | V.J. Chapman | Journal of the Linnean Society of London, Botany | 55: 391, text-fig. 35-I; pl. 25 | 1956 |
| Ulva crassimembrana | (V.J. Chapman) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 289 | 2003 |
| Ulva cribraria | Schousboe | image | ||
| Ulva cribrosa | (J. Agardh) Bornet | image | ||
| Ulva crispa | (C. Linnaeus) A.P. de Candolle | image | ||
| Ulva crispa | A.P. de Candolle in Lamarck & A.P. de Candolle | Fl. Franc\*,., ed. 3, | 2: 13 | 1805 |
| Ulva crispa | Dangeard | image | ||
| Ulva crispa | Delle Chiaje | Hydrophytol. Neapol. | 1: 15 | 1829 |
| Ulva crispa f. gregaria | Dangeard | image | ||
| Ulva crispa | J. Lightfoot | image | ||
| Ulva crispa | Lightfoot | Fl. Scot.: | 972 | 1777 |
| Ulva crispa | P.J.L. Dangeard | Botaniste | 42: 21, figs. 2-4 | 1959 |
| Ulva crispa | S. Chiaje | image | ||
| Ulva crispata | A. Bertoloni | image | ||
| Ulva crispata | Bertoloni | Rar. Ital. Pl. | 3: 63 | 1810 |
| Ulva cristata | Hooker f. & Harvey | image | ||
| Ulva croatica | G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 89, fig. 1 | 2014 |
| Ulva cruciata | (Collins) A.C. Mathieson & C.J. Dawes | Seaweeds of the Northwest Atlantic: | (NOT SEEN) | 2017 |
| Ulva cuneata | Forssk. | image | ||
| Ulva curvata | (F.T. Kützing) De Toni | image | ||
| Ulva cylindrica | Wahlenberg | image | ||
| Ulva dactylifera | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 7: 285, pl. 26: fig. 1 | 1920 |
| Ulva dactylifera var. rotunda | V.J. Chapman | image | ||
| Ulva dactylifera | W.A. Setchell & N.L. Gardner | image | ||
| Ulva damaeformis | Roth | image | ||
| Ulva dangeardii | Gayral & Mazancourt | image | ||
| Ulva dangeardii | Gayral & Mazancourt | image | ||
| Ulva decorticata | Woodward | Transactions of the Linnean Society [London] | 3: 55 | 1797 |
| Ulva defracta | Velley | image | ||
| Ulva delicatula | Gunnerus | image | ||
| Ulva denticulata | Dangeard | image | ||
| Ulva diaphana | Hudson | image | ||
| Ulva dichotoma | (Suhr) Trevisan | image | ||
| Ulva dichotoma | G. Ruchinger | image | ||
| Ulva dichotoma | Hudson | Fl. Angl.: | 476 | 1762 |
| Ulva dichotoma | W. Hudson | image | ||
| Ulva digitata | (Linnaeus) DC. | image | ||
| Ulva diluviana | Schlotheim | image | ||
| Ulva discolor | Mertens | image | ||
| Ulva divaricata | Clemente | Ensayo sobre las Variedades de la Vid: | 320 | 1807 |
| Ulva divisa | Suhr | image | ||
| Ulva edulis | (Withering) DC. | image | ||
| Ulva elegans | P. Gayral | image | ||
| Ulva elminthoides | (Velley) Withering | image | ||
| Ulva elongata | Schousboe | image | ||
| Ulva endiviifolia_('endiviaefolia') | Martius | Fl. Bras. | 1: 21 | 1833 |
| Ulva enteromorpha f. angusta | (Kützing) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 43 | 1863 |
| Ulva enteromorpha f. bullosa | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 47 | 1863 |
| Ulva enteromorpha f. caespitosa | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 45 | 1863 |
| Ulva enteromorpha f. capillaris | (Kützing) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 47 | 1863 |
| Ulva enteromorpha f. capillaris | Van Heurck | image | ||
| Ulva enteromorpha f. complanata | (Kützing) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 45 | 1863 |
| Ulva enteromorpha f. cornucopiae | (Lyngbye) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 45 | 1863 |
| Ulva enteromorpha f. crinita | (Nees) Van Heurck | Prodr. Alg. Mar. Iles Anglo-Normandes: | 21 | 1908 |
| Ulva enteromorpha f. crinita | Van Heurck | image | ||
| Ulva enteromorpha f. crispa | (Roth) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 46 | 1863 |
| Ulva enteromorpha f. crispata | (Bertoloni) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 43 | 1863 |
| Ulva enteromorpha f. falcata | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 45 | 1863 |
| Ulva enteromorpha f. flagelliformis | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 47 | 1863 |
| Ulva enteromorpha f. latifolia | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 43 | 1863 |
| Ulva enteromorpha f. maxima | (C. Agardh) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 47 | 1863 |
| Ulva enteromorpha f. micrococca | (Kützing) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 47 | 1863 |
| Ulva enteromorpha f. minima | Rabenhorst | Hedwigia | 5: 58 | 1866 |
| Ulva enteromorpha f. nana | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 45 | 1863 |
| Ulva enteromorpha f. plana | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 43 | 1863 |
| Ulva enteromorpha f. procerrima | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 47 | 1863 |
| Ulva enteromorpha f. prolifera | (Müller) Van Heurck | image | ||
| Ulva enteromorpha f. prolifera | (O.F. Müller) Van Heurck | Prodr. Alg. Mar. Iles Anglo-Normandes: | 21 | 1908 |
| Ulva enteromorpha f. smaragdina | (Kützing) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 43 | 1863 |
| Ulva enteromorpha f. smaragdina | (Kützing) Le Jolis | image | ||
| Ulva enteromorpha f. undulata | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 43 | 1863 |
| Ulva enteromorpha f. ventricosa | (A.P. de Candolle) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 46 | 1863 |
| Ulva enteromorpha | Le Jolis | image | ||
| Ulva enteromorpha | Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 42 | 1863 |
| Ulva enteromorpha var. angusta | (Kützing) Le Jolis | image | ||
| Ulva enteromorpha var. bullosa | Le Jolis | image | ||
| Ulva enteromorpha var. caespitosa | Le Jolis | image | ||
| Ulva enteromorpha var. complanata | (Kützing) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 45 | 1863 |
| Ulva enteromorpha var. complanata | (Kützing) Le Jolis | image | ||
| Ulva enteromorpha var. compressa | (Linnaeus) Hariot | image | ||
| Ulva enteromorpha var. compressa | (Linnaeus) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 44 | 1863 |
| Ulva enteromorpha var. cornucopiae | (Lyngbye) Le Jolis | image | ||
| Ulva enteromorpha var. crispa | (Roth) Le Jolis | image | ||
| Ulva enteromorpha var. crispata | (Bertoloni) Le Jolis | image | ||
| Ulva enteromorpha var. falcata | Le Jolis | image | ||
| Ulva enteromorpha var. flagelliformis | Le Jolis | image | ||
| Ulva enteromorpha var. intestinalis | (Linnaeus) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 46 | 1863 |
| Ulva enteromorpha var. lanceolata | (Linnaeus) Hariot | image | ||
| Ulva enteromorpha var. lanceolata | (Linnaeus) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 42 | 1863 |
| Ulva enteromorpha var. latifolia | Le Jolis | image | ||
| Ulva enteromorpha var. maxima | (C. Agardh) Le Jolis | image | ||
| Ulva enteromorpha var. micrococca | (Kützing) Le Jolis | image | ||
| Ulva enteromorpha var. nana | Le Jolis | image | ||
| Ulva enteromorpha var. plana | Le Jolis | image | ||
| Ulva enteromorpha var. procerrima | Le Jolis | image | ||
| Ulva enteromorpha var. undulata | Le Jolis | image | ||
| Ulva enteromorpha var. ventricosa | (Poiret) Le Jolis | image | ||
| Ulva erecta | (H.C. Lyngbye) E.M. Fries | image | ||
| Ulva erecta | (Lyngbye) Fries | Fl. Scan.: | 320 | 1835 |
| Ulva erecta f. plumosa | (Kützing) Crouan frat. | image | ||
| Ulva erecta f. plumosa | (Kützing) P. Crouan & H. Crouan | Fl. Finistère: | 131 | 1867 |
| Ulva expansa | (Setchell) Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 7: 284 | 1920 |
| Ulva expansa | (W.A. Setchell) W.A. Setchell & N.L. Gardner | image | ||
| Ulva falcata | Schousboe | image | ||
| Ulva fascia | (Müller) H.C. Lyngbye | image | ||
| Ulva fascia | (O.F. Müller) Lyngbye | Tent. Hydrophytol. Dan.: | 28 | 1819 |
| Ulva fascia var. tenuior | Lyngbye | image | ||
| Ulva fasciata | image | |||
| Ulva fasciata | Delile | Description de l'Égypte ... Histoire naturelle. Vol. 2: | Expl. pl. 297 [153 of reprint], pl. 58: fig. 5 | 1813 |
| Ulva fasciata f. caespitosa | Setchell | image | ||
| Ulva fasciata f. costata | Howe | Mem. Torr. Bot. Club | 15: 20, pls. 1, 2, figs. 10-23 | 1914 |
| Ulva fasciata f. costata | M.A. Howe | image | ||
| Ulva fasciata f. expansa | Setchell in Collins, Holden, & Setchell | Phyc. Bor.-Amer.: | LXXVII | 1905 |
| Ulva fasciata f. lobata | Setchell in Collins, Holden, & Setchell | Phycoth. Bor.-Amer.: | no. 863 | 1901 |
| Ulva fasciata f. major | Tilden | Amer. Alg.: | 467 | 1901 |
| Ulva fasciata f. minor | Tilden | Amer. Alg.: | 559 | 1902 |
| Ulva fasciata f. taeniata | Setchell in Collins, Holden, & Setchell | Phycoth. Bor.-Amer.: | no. 862 | 1901 |
| Ulva fasciata | Mert. et nob. mst. | image | ||
| Ulva fasciata | S.F. Gray | image | ||
| Ulva fasciata | S.F. Gray | Nat. Arr. Brit. Pl. | 1: 343 | 1821 |
| Ulva fasciata var. concolor | Montagne | image | ||
| Ulva fasciata var. lobata | (Kützing) Piccone | Alg. Vettor Pisani: | 23 | 1886 |
| Ulva fasciata var. lobata | (Kützing) Piccone | image | ||
| Ulva fasciata var. palmata | (C. Agardh) Montagne | image | ||
| Ulva fasciata var. subsimplex | Montagne | image | ||
| Ulva fasciata var. taeniata 'Setchell' | image | |||
| Ulva fasciculata | A.P. de Candolle | image | ||
| Ulva fasciola | (Roth) Martius | image | ||
| Ulva fastigiata | Clemente | image | ||
| Ulva fenestrata | A.P. Postels & F.J. Ruprecht | image | ||
| Ulva fenestrata | Postels & Ruprecht | Ill. Alg.: | 21, pl. XXXVII | 1840 |
| Ulva fetida | (D. Villars) J.P.E. Vaucher | image | ||
| Ulva filiformis | J.L.M. Poiret | image | ||
| Ulva filiformis | W. Hudson | image | ||
| Ulva filosa | C.P. Thunberg | image | ||
| Ulva finissima | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 467, figs. 46-51 | 2022 |
| Ulva fistulosa | Hudson | image | ||
| Ulva flabelliformis | Roth | image | ||
| Ulva flabelliformis | Wulfen | image | ||
| Ulva flava | Forsskål | image | ||
| Ulva flavescens | Hudson | image | ||
| Ulva flexuosa f. submarina | (Collins & Hervey) M.J. Wynne | Beih. Nova Hedwigia | 129: 107 | 2005 |
| Ulva flexuosa subsp. biflagellata | (Bliding) A. Sfriso & D. Curiel | Bot. Mar. | 50: 51 (Table 7) | 2007 |
| Ulva flexuosa subsp. paradoxa | (C. Agardh) M.J. Wynne | Beih. Nova Hedwigia | 129: 107 | 2005 |
| Ulva flexuosa subsp. pilifera | (Kützing) M.J. Wynne | Beih. Nova Hedwigia | 129: 107 | 2005 |
| Ulva flexuosa var. linziformis | G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 91, fig. 4 | 2014 |
| Ulva flexuosa var. pilifera | (Kützing) P.M. Tsarenko in P.M. Tsarenko et al. (eds.) | Algae of Ukraine | 3: 33 | 2011 |
| Ulva flexuosa var. profunda | (Bliding) G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 94 | 2014 |
| Ulva flexuosa | Wulfen | Crypt. Aquat.: | 1 | 1803 |
| Ulva fluviatilis | S.C. Sommerfelt | image | ||
| Ulva foeniculacea | (Hudson) C. Agardh | image | ||
| Ulva foliacea | Poiret | image | ||
| Ulva fuliginosa | Mertens | image | ||
| Ulva fulvescens | C. Agardh | Sp. Alg. | 1: 420 | 1823 |
| Ulva fulvescens | C.A. Agardh | image | ||
| Ulva fungosa | (Desfontaines) Poiret | image | ||
| Ulva furcata | C. Agardh mss. | image | ||
| Ulva furcellata | Turner | Journal für die Botanik [Schrader] | 1800, 1: 301, pl. I: fig. A | 1801 |
| Ulva furfuracea | Mertens mss. | image | ||
| Ulva fusca | A.P. Postels & F.J. Ruprecht | image | ||
| Ulva fusca | Hudson | image | ||
| Ulva fusca | Postels & Ruprecht | Ill. alg. | 21 | 1840 |
| Ulva gayralii | Cauro | image | ||
| Ulva gelatinosa | Kützing | image | ||
| Ulva gelatinosa | Vaucher | image | ||
| Ulva geminoidea | V.J. Chapman | image | ||
| Ulva geminoidea var. crispa | V.J. Chapman | image | ||
| Ulva geminoidea var. dentata | V.J. Chapman | image | ||
| Ulva gigantea | (F.T. Kützing) C.V. Bliding | image | ||
| Ulva glandiformis | Gmelin | Hist. fuc.: | 232 | 1768 |
| Ulva godeyi | Brébisson | image | ||
| Ulva gracillima | (G.S. West) P. S\*vkaloud & F. Leliaert in S\*vkaloud et al. | Freshwater Flora of Central Europe | 13: 72 | 2018 |
| Ulva grandis_('grande') | Saifullah & Nizamuddin | Botanica Marina | 20: 526, figs. 13, 14, pl. III:B | 1977 |
| Ulva granulata | Linnaeus | image | ||
| Ulva grevillei | (Thuret) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 37 | 1863 |
| Ulva grossa | P.J. Kang, J.W. An, & K.W. Nam | J. Mar. Biosci. Biotechnol. | 14: 53, fig. 1 | 2022 |
| Ulva gujaratensis | (S.R. Kale) A.S. Kumar & M. Palanisamy | Nelumbo | 63{2}: 21 | 2021 |
| Ulva halleri | (DC.) Poiret | image | ||
| Ulva hendayensis | Dangeard & Parriaud | image | ||
| Ulva hendayensis | P.J.L. Dangeard & H. Parriaud | C.R. Acad. Sci. [Paris] | 250: 2974, expl. fig. 2 | 1960 |
| Ulva hookeriana | (Kützing) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 289 | 2003 |
| Ulva hopkirkii | (M'Calla ex Harvey) P. Crouan & H. Crouan | Fl. Finistère: | 130 | 1867 |
| Ulva hopkirkii | (McCalla) Crouan frat. | image | ||
| Ulva howensis | (A.H.S. Lucas) G.T. Kraft | Mar. Benth. Alg. Lord Howe Island | 1: 37, 319 | 2007 |
| Ulva hutchinensis | Poiret | image | ||
| Ulva iliohaha | H.L. Spalding & A.R. Sherwood in Spalding et al. | J. Phycol. | 52: 48, fig. 6 | 2016 |
| Ulva imbricata | Schousboe | image | ||
| Ulva implicata | Schousboe | image | ||
| Ulva incrassata | Müller | image | ||
| Ulva incrassata | W. Hudson | image | ||
| Ulva incurvata | Parriaud | image | ||
| Ulva incurvata | Parriaud ex Dangeard | image | ||
| Ulva indica | Anand | image | ||
| Ulva indica | P. Anand | Marine algae from Karachi. Part I. Chlorophyceae: | 3, 4, 5, 18, figs. 3C-F, pl. II: fig. 3 | 1940 |
| Ulva indica | Roth | Cat. Bot. | 3: 327 | 1806 |
| Ulva infundibuliformis | Turra | image | ||
| Ulva insignis | (Areschoug) Papenfuss | J. Linn. Soc. London, Bot. | 56: 309 | 1960 |
| Ulva insignis | (J.E. Areschoug) Papenfuss | image | ||
| Ulva interrupta | A.P. de Candolle | Mém. Agric. Soc. Agric. Dép. Seine | 38 [tome 10]: 232 | 1807 |
| Ulva interrupta | DC. | image | ||
| Ulva interrupta | J.L.M. Poiret | image | ||
| Ulva intestinalis f. attenuata | (Ahlner) M.J. Wynne in M. Cormaci, G. Furnari & G. Alongi | Bollettino Accademia Gioenia Sci. Nat. | 47: 395 | 2014 |
| Ulva intestinalis f. cornucopiae | (Lyngbye) A. Sfriso & D. Curiel | Bot. Mar. | 50: 51 (Table 7) | 2007 |
| Ulva intestinalis f. cylindracea | M.J. Wynne | Beih. Nova Hedwigia | 129: 107 | 2005 |
| Ulva intestinalis f. filiformis | P. Crouan & H. Crouan | Fl. Finistère: | 130 | 1867 |
| Ulva intestinalis f. intestiniformis | Crouan frat. | image | ||
| Ulva intestinalis f. intestiniformis | P. Crouan & H. Crouan | Fl. Finistère: | 130 | 1867 |
| Ulva intestinalis f. mesenteriformis | (Kützing) P. Crouan & H. Crouan | Fl. Finistère: | 130 | 1867 |
| Ulva intestinalis f. ramosa | (K.L. Vinogradova) E. Taskin | Pakistan J. Biol. Sci. | 10: 1936 | 2007 |
| Ulva intestinalis f. rivularis | Crouan frat. | image | ||
| Ulva intestinalis f. rivularis | P. Crouan & H. Crouan | Fl. Finistère: | 130 | 1867 |
| Ulva intestinalis f. saprobia | (K.L. Vinogradova) E. Taskin | Pakistan J. Biol. Sci. | 10: 1936 | 2007 |
| Ulva intestinalis f. tenuis | (Collins) M.J. Wynne | Beih. Nova Hedwigia | 129: 107 | 2005 |
| Ulva intestinalis | Linnaeus | Sp. Pl. | 2: 1163 | 1753 |
| Ulva intestinalis var. asexualis | (Bliding) E. Taskin | Pakistan J. Biol. Sci. | 10: 1936 | 2007 |
| Ulva intestinalis var. cornucopiae | ([Lyngbye]) C. Agardh | image | ||
| Ulva intestinalis var. cornucopiae | (Lyngbye) C. Agardh | Sp. Alg. | 1: 419 | 1823 |
| Ulva intestinalis var. crispa | (Roth) C. Agardh | Syn. Alg. Scand.: | 45 | 1817 |
| Ulva intestinalis var. maxima | C. Agardh | Sp. Alg. | 1: 419 | 1823 |
| Ulva intestinalis var. nana | Sommerfelt | Suppl. Fl. Lapp.: | 186 | 1826 |
| Ulva intestinalis var. ramosa | (K.L. Vinogradova) P.M. Tsarenko in P.M. Tsarenko et al. (eds.) | Algae of Ukraine | 3: 34 | 2011 |
| Ulva intestinalis var. saprobia | (K.L. Vinogradova) P.M. Tsarenko in P.M. Tsarenko et al. (eds.) | Algae of Ukraine | 3: 34 | 2011 |
| Ulva intestinalis var. suhrii | Seubert | Fl. Azor.: | 10 | 1844 |
| Ulva intestinaloides | (R.P.T. Koeman & C. van den Hoek) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 289 | 2003 |
| Ulva intricata | Clemente y Rubio | Ensayo: | 320 | 1807 |
| Ulva intricata | Thuillier ined. in Chevallier | Fl. Paris, ed. 2, | 1: 7 | 1836 |
| Ulva intybacea | Lamarck | image | ||
| Ulva intybacea | Lamarck | Fl. Franc\*,. | 1: (99) | 1779 |
| Ulva involvens | Savi in Salvadori | Atti Soc. Ital. Sci. Nat. [Milano] | 6: 478 | 1864 |
| Ulva japonica | (E.M. Holmes) Papenfuss | J. Linn. Soc. London, Bot. | 56: 309 | 1960 |
| Ulva japonica | (Holmes) Papenfuss | image | ||
| Ulva javanica | N.L. Burman | Flora indica: cui accedit series zoophytorum indicorum, nec non prodromus florae capensis: | 239 | 1768 |
| Ulva kanagawae | V. Carneiro, N.T. Martins & V. Cassano in Carneiro et al., | Phycologia | 62: 412, figs. 2-6 | 2023 |
| Ulva kraftiorum | J.M. Huisman | Algae of Australia: Marine Benthic Algae of North-western Australia. 1: | 28, fig. 3E | 2015 |
| Ulva kuckuckiana | O.C. Schmidt | image | ||
| Ulva kylinii | (Bliding) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 289 | 2003 |
| Ulva labyrinthiformis | Linnaeus | Species plantarum ... Editio secunda ...: | 1633 | 1763 |
| Ulva labyrinthiformis | O. F. Müller | image | ||
| Ulva labyrinthiformis_('labyrintiformis') | Linnaeus (cont.) | image | ||
| Ulva labyrinthiformis_('labyrintiformis') | Linnaeus | image | ||
| Ulva laciniata | Lightfoot (cont.) | image | ||
| Ulva laciniata | Lightfoot | Fl. Scot.: | 974, pl. XXXIII | 1777 |
| Ulva laciniata var. umbilicata | C. Agardh | Sp. Alg. | 1: 405 | 1823 |
| Ulva lacinulata | (Kützing) Wittrock in Wittrock & Nordstedt | Alg. aq. dulc. exs.: | 433 | 1882 |
| Ulva lactuca f. australis | (Kützing) Schiffner in Brunelli et al., | La Laguna di Venezia, vol. 3, parte 5, tomo 9, fasc. 1: | 160 | 1938 |
| Ulva lactuca f. australis | (Kützing) Schiffner | image | ||
| Ulva lactuca f. consociata | P. Dangeard | image | ||
| Ulva lactuca f. contorta | (Lyngbye) Gomont | image | ||
| Ulva lactuca f. cribrosa | (J. Agardh) De Toni | image | ||
| Ulva lactuca f. crispa | P. Dangeard | image | ||
| Ulva lactuca f. fasciata | (Delile) Hauck | image | ||
| Ulva lactuca f. fasciata | (Delile) Hering in Krauss, | Flora | 29: 215 | 1846 |
| Ulva lactuca f. foraminata | Deckenbach | Bot. Zap. | 4(1) [i.e. 9]: 14 | 1893 |
| Ulva lactuca f. genuina | Hauck | image | ||
| Ulva lactuca f. laciniata | (J. Agardh) De Toni | Sylloge algarum ... Vol. I. Chlorophyceae: | 112 | 1889 |
| Ulva lactuca f. lacinulata | (Kützing) Hauck | Rabenhorst's Krypt.-Fl. Deutschl., 2.Aufl., | 2: 437 | 1884 |
| Ulva lactuca f. lacinulata | (Kützing) Hauck | image | ||
| Ulva lactuca f. lapathifolia | (Kützing) Hauck | Rabenhorst's Krypt.-Fl. Deutschl., 2.Aufl., | 2: 437 | 1884 |
| Ulva lactuca f. latissima | (C. Linnaeus) J.H. Kylin | image | ||
| Ulva lactuca f. latissima | Schiffner | image | ||
| Ulva lactuca f. lobata | (Kützing) Hauck | Bot. Jahrb. | 9: 467 | 1888 |
| Ulva lactuca f. lobata | (Kützing) Hauck | image | ||
| Ulva lactuca f. myriotrema | (R. Lenormand ex F.T. Kützing) De Toni | image | ||
| Ulva lactuca f. pulvinata | O.C. Schmidt | image | ||
| Ulva lactuca f. rigida | (C. Agardh) Hylmö | image | ||
| Ulva lactuca f. rigida | De Toni | image | ||
| Ulva lactuca f. stipitata | (Areschoug) Kylin | image | ||
| Ulva lactuca | Linnaeus | Sp. Pl. | 2: 1163 | 1753 |
| Ulva lactuca subf. bullosa | Schiffner | image | ||
| Ulva lactuca var. amplissima | Le Jolis | image | ||
| Ulva lactuca var. bullosa | Hornemann | Fl. Dan. | 12{35}: 7, pl. MMLXXII | 1832 |
| Ulva lactuca var. contorta | (Lyngbye) Le Jolis | image | ||
| Ulva lactuca var. contorta | Lyngbye | image | ||
| Ulva lactuca var. curvatiformis | Schiffner | image | ||
| Ulva lactuca var. dillenii | Le Jolis | image | ||
| Ulva lactuca var. fasciata | (Delile) Hering | image | ||
| Ulva lactuca var. fasciata | (Delile) Schiffner | image | ||
| Ulva lactuca var. genuina | Schiffner | image | ||
| Ulva lactuca var. laciniata | (J. Agardh) Schiffner | image | ||
| Ulva lactuca var. lacinulata | (Kützing) W.R. Taylor | image | ||
| Ulva lactuca var. latissima | (C. Linnaeus) P.A. Hariot | image | ||
| Ulva lactuca var. latissima | (C. Linnaeus) T. Edmondston | image | ||
| Ulva lactuca var. latissima | (Linnaeus) A.P. de Candolle in Lamarck & de Candolle | Fl. Franc\*,., ed. 3, | 2: 9 | 1805 |
| Ulva lactuca var. latissima | R. Lenormand | image | ||
| Ulva lactuca var. linearis | Le Jolis | image | ||
| Ulva lactuca var. longissima | Montagne | image | ||
| Ulva lactuca var. macrogonya | Reinsch | Int. Polarforsch. 1882-1883, Deutsch. Exped. Ergebn. | 2: 420 | 1890 |
| Ulva lactuca var. maxima | P. Dangeard | image | ||
| Ulva lactuca var. mesenteriformis | (Roth) Wallroth | image | ||
| Ulva lactuca var. multifida | Le Jolis | image | ||
| Ulva lactuca var. myriotrema | R. Lenormand | image | ||
| Ulva lactuca var. palmata | (C. Agardh) Montagne | image | ||
| Ulva lactuca var. perforata | Rodríguez y Femenías | image | ||
| Ulva lactuca var. pulvinata | (O.C. Schmidt) Lami | image | ||
| Ulva lactuca var. pulvinata | Despréaux | image | ||
| Ulva lactuca var. rigida | (C. Agardh) A.F. Le Jolis | image | ||
| Ulva lactuca var. rigida | (C. Agardh) Hariot | image | ||
| Ulva lactuca var. rigida | (C. Agardh) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 38 | 1863 |
| Ulva lactuca var. rigida | Lenormand | image | ||
| Ulva lactuca var. rosulans | Schiffner | image | ||
| Ulva lactuca var. simplex | Le Jolis | image | ||
| Ulva lactuca var. simplex | Rudolphi | image | ||
| Ulva lactuca var. spiralis | (Hornemann) Lange | image | ||
| Ulva lactuca var. umbilicalis | Rudolphi | image | ||
| Ulva lactuca var. umbilicata | Wallroth | image | ||
| Ulva lactucaefolia | S.F. Gray | Nat. Arr. Brit. Pl. | 1: 342 | 1821 |
| Ulva lactucifolia_('lactucaefolia') | S.F. Gray | image | ||
| Ulva lacunosa | Duby | image | ||
| Ulva laetevirens | Areschoug | Nova Acta R. Soc. Sci. Upsal., | ser. 3, 1: 370 | 1854 |
| Ulva laetevirens | J.F. Areschoug | image | ||
| Ulva laingii | V.J. Chapman | image | ||
| Ulva lanceolata | Linnaeus | Syst. Nat. ed. 12, | 2: 719 | 1767 |
| Ulva lapathifolia | (Kützing) Areschoug | Alg. Scand. Exsicc., n.s.: | Fasc. 1, no. 25 | 1861 |
| Ulva lapathifolia | (Kützing) De Toni | Syll. Alg. | 1: 116 | 1889 |
| Ulva lapathifolia | (Kützing) De Toni | image | ||
| Ulva latissima | C. Linnaeus | image | ||
| Ulva latissima | Linnaeus | Sp. Pl. | 1163 | 1753 |
| Ulva latissima var. lobata | Crouan fr. | image | ||
| Ulva latissima var. longissima | (Montagne) Montagne | image | ||
| Ulva latissima var. mesenteriformis | (Roth) C. Agardh | image | ||
| Ulva latissima var. myriotrema | Crouan | image | ||
| Ulva latissima var. palmata | C. Agardh | Sp. alg. | 1: 409 | 1823 |
| Ulva latissima var. umbilicalis | (Linnaeus) C. Agardh | image | ||
| Ulva leptophylla | Arasaki nom. prov. | image | ||
| Ulva ligula | (Montagne ex Kützing) De Toni | image | ||
| Ulva ligulata | Woodward | image | ||
| Ulva limnetica | K. Ichihara & S. Shimada in K. Ichihara et al. | Phycol. Research | 57: 96, figs. 3,4 | 2009 |
| Ulva linearis | P.J.L. Dangeard | image | ||
| Ulva linearis var. lata | P. Dangeard | image | ||
| Ulva lingulata | (Solander) DC. | image | ||
| Ulva linkiana | (Greville) Trevisan | Prosp. Fl. Eug.: | 51 | 1842 |
| Ulva linza | C. Linnaeus | image | ||
| Ulva linza | Linnaeus | Sp. Pl. | 2: 1163 | 1753 |
| Ulva linza var. bicornuta | (H.V. Joshi & V. Krishnamurthy) A.S. Kumar & M. Palanisamy | Nelumbo | 63{2}: 21 | 2021 |
| Ulva linza var. lanceolata | (Linnaeus) C. Agardh | Sp. Alg. | 1: 413 | 1823 |
| Ulva linza var. oblanceolata | (M.S. Doty) A.C. Mathieson & C.J. Dawes | Seaweeds of the Northwest Atlantic: | (NOT SEEN) | 2017 |
| Ulva linza var. spiralis | Hornemann | image | ||
| Ulva linza var. spiralis | Suhr | image | ||
| Ulva linzoides | G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 93, fig. 5 | 2014 |
| Ulva lippii | Lamouroux in J. Agardh | Alg. Syst. | 3: 123 | 1883 |
| Ulva lippii | Lamouroux mscr. | image | ||
| Ulva litoralis | Suhr | image | ||
| Ulva litoralis | Suhr ex Kützing | Alg. Aq. Dulc. Germ. | 16: [4] | 1836 |
| Ulva littorea | Suhr in Kützing | Phycol. Gen.: | 300 | 1843 |
| Ulva littorea | Suhr mscr. | image | ||
| Ulva lobata | (Kützing) Harvey | The botany of the Antarctic voyage of H.M. discovery ships Erebus and Terror, in the years 1839-1843, under the command of Captain Sir James Clark Ross ... II. Flora Novae-Zelandiae. Part II. Flowerless plants: | 265 | 1855 |
| Ulva lobata | (Kützing) Harvey | image | ||
| Ulva longissima | Gunnerus | image | ||
| Ulva lubrica | A.W. Roth | image | ||
| Ulva lubrica | Roth | Cat. Bot. | 1: 204, pl. V: fig. 7 | 1797 |
| Ulva lumbricalis | Linnaeus | Mantissa plantarum altera Generum editionis VI., & Specierum editionis II: | 311 | 1771 |
| Ulva maculata | Poiret | image | ||
| Ulva maeotica | (Proshkina-Lavrenko) O. Burova in P.M. Tsarenko et al. (eds.) | Algae of Ukraine | 3: 34 | 2011 |
| Ulva marginata | (J. Agardh) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 53 | 1863 |
| Ulva mediterranea | G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 90, fig. 2 | 2014 |
| Ulva melanoidea | Schousboe | image | ||
| Ulva membranacea | (Stackh.) Jones & Kingston | image | ||
| Ulva membranacea | (Stackhouse) J.P. Jones & Kingston | Fl. Devon. | 2: 59 | 1829 |
| Ulva meridionalis | R. Horimoto & S. Shimada in Horimoto et al. | Bull. Natl. Mus. Nat. Sci., Ser. B, | 37(4): 161, figs. 3-17 | 2011 |
| Ulva merismopedioides | H.C. Wood in Watson | Botany [fortieth parallel]: | 415 | 1871 |
| Ulva mertensii | Martius | image | ||
| Ulva mesenteriformis | Roth | image | ||
| Ulva micrococca | (Kützing) Gobi | Mém. Acad. Imp. Sci. Saint-Pétersbourg, ser. 7, | 26{1}: 81 | 1878 |
| Ulva micrococca | (Kützing) Gobi | image | ||
| Ulva miniata | (C. Agardh) Lyngbye | Tent. Hydrophytol. Dan.: | 29 | 1819 |
| Ulva miniata | Chiaje | image | ||
| Ulva minima | Vaucher | image | ||
| Ulva minuta | Kützing | image | ||
| Ulva moccana | J.F. Gmelin | image | ||
| Ulva montana | Lightfoot | Fl. Scot.: | 973 | 1777 |
| Ulva montana | Swartz | image | ||
| Ulva mucosa | Kützing | image | ||
| Ulva mucosa | Kützing | image | ||
| Ulva multifida | J.E. Smith | image | ||
| Ulva multifida | J.E. Smith | Engl. Bot. | 27: pl. 1913 | 1808 |
| Ulva multifida | Turner | J. Bot. [Schrader] | 1800{1}: 301, pl. I: fig. B | 1801 |
| Ulva multiramosa | E. Taskin | Asian J. Biol. Sci. | 5: 63, fig. 1 | 2014 |
| Ulva muscoides | Clemente | Ensayo sobre las Variedades de la Vid: | 320 | 1807 |
| Ulva muscoides | Clemente ex Schousboe | image | ||
| Ulva mutabilis | Föyn | image | ||
| Ulva myriotrema | (Kützing) Crouan frat. | image | ||
| Ulva neapolitana | Bliding | Bot. Not. | 113: 182, figs. 10, 11 | 1960 |
| Ulva neapolitana | C.V. Bliding | image | ||
| Ulva nematoidea | Bory | image | ||
| Ulva nematoidea var. serratula | J. Agardh in Jadin, | Bull. Soc. Linn. Normandie, sér. 2, | 9: 249, 250 | 1875 |
| Ulva nitens | C. Agardh | image | ||
| Ulva nitida | Bertoloni | image | ||
| Ulva nostoch | A.P. de Candolle | Mém. Agric. Soc. Agric. Dép. Seine | 38 [tome 10]: 232 | 1807 |
| Ulva nostoch | DC. | image | ||
| Ulva nostoch | Poiret | image | ||
| Ulva obscura | F.T. Kützing | image | ||
| Ulva obscura | Kützing | Phycol. General.: | 296 | 1843 |
| Ulva ocellata | (Lamouroux) DC. | image | ||
| Ulva ohiohilulu | H.L. Spalding & A.R. Sherwood in Spalding et al. | J. Phycol. | 52: 47, figs. 2a,b, 4 | 2016 |
| Ulva ohnoi | M. Hiraoka & S. Shimada in M. Hiraoka, S. Shimada, M. Uenosono, & M. Masuda | Phycol. Res. | 52: 20, figs. 1-22 | 2004 |
| Ulva olivacea | Hornemann (cont.) | image | ||
| Ulva olivacea | Hornemann | Fl. Dan. | 8{24}: 5, pl. MCCCCXXIX | 1810 |
| Ulva olivacea | P.J.L. Dangeard | image | ||
| Ulva olivacea | P.J.L. Dangeard | Botaniste | 35: 34, fig. 1 | 1951 |
| Ulva olivascens | Dangeard | image | ||
| Ulva olivascens | P.J.L. Dangeard | Botaniste | 44: 22, footnote | 1961 |
| Ulva opuntia | (Good. & Woodw.) Poiret | image | ||
| Ulva orbiculata | (Thuret) Rabenhorst | image | ||
| Ulva oryziformis | Forsskål | image | ||
| Ulva ovata | (F. Thivy & V. Visalakshmi ex H.V. Joshi & V. Krishnamurthy) A.S. Kumar & Palanisamy | Nelumbo | 63: 219 | 2021 |
| Ulva oxycocca | F.T. Kützing | image | ||
| Ulva oxycocca | Kützing | Phycol. Germ.: | 244 | 1845 |
| Ulva oxysperma | F.T. Kützing | image | ||
| Ulva oxysperma | Kützing | Phycol. General.: | 296 | 1843 |
| Ulva pacifica | Endlicher | Gen. Pl. Suppl. | 3: 19 | 1843 |
| Ulva pacifica | S.F.L. Endlicher | image | ||
| Ulva palmata | (Linnaeus) W. Withering | image | ||
| Ulva palmata | (Linnaeus) Withering | Arr. Brit. Pl., ed. 3, | 4: 123 | 1796 |
| Ulva palmata | (Linnaeus) Woodward | image | ||
| Ulva palmata | DC. var. laciniata Lyngbye | image | ||
| Ulva palmata | DC. var. marginifera (Turner) Lyngbye | image | ||
| Ulva palmata | DC. var. simplex (C. Agardh) Lyngbye | image | ||
| Ulva papenfussii | P.-H. Hô | image | ||
| Ulva papillosa | (S.G. Gmelin) F. Weber & Mohr | Beitr. Naturk. | 1: 325 | 1805 |
| Ulva papillosa | Linnaeus | image | ||
| Ulva papillosa | Linnaeus | Mant. Pl. Alt.: | 311 | 1771 |
| Ulva papyracea | Balbis | image | ||
| Ulva papyracea | Schleicher | image | ||
| Ulva paradoxa | (L.W. Dillwyn) C.A. Agardh | image | ||
| Ulva paradoxa | C. Agardh | Syn. Alg. Scand.: | XXII | 1817 |
| Ulva partita | K. Ichihara in Ichihara et al., | Cytologia | 80: 263, figs. 1, 4-26 | 2015 |
| Ulva parva | V.J. Chapman | image | ||
| Ulva parvula | Kützing | image | ||
| Ulva parvula | P.K.A. Schousboe | image | ||
| Ulva paschima | F. Bast in Bast, John, & Bhushan | PLOS ONE | 9(10): 6, fig. 1 | 2014 |
| Ulva patengensis_('patengansis') | Salam & Khan | Phykos | 19: 129, figs. 1-4 | 1981 |
| Ulva pavonia | (C. Linnaeus) C. Linnaeus | image | ||
| Ulva pennata | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 465, figs. 13-20 | 2022 |
| Ulva pentagonum | Meneghini | image | ||
| Ulva percursa | (C. Agardh) C. Agardh | Sp. Alg. | 1: 424 | 1823 |
| Ulva percursa | (C.A. Agardh) C.A. Agardh | image | ||
| Ulva pertusa | Kjellman | Bih. Kongl. Svenska Vetensk.-Akad. Handl. | 23(Afd. III, 11): 4-7, pl. 1; pl. 3: figs. 1-8 | 1897 |
| Ulva petiolata | (J. Agardh) Womersley | image | ||
| Ulva petiolata | Turra | image | ||
| Ulva phyllitis | (Stackhouse) DeCandolle | image | ||
| Ulva phyllosa | (V.J. Chapman) Papenfuss | J. Linn. Soc. London, Bot. | 56: 312 | 1960 |
| Ulva pilifera | (Kützing) P. S\*vkaloud & F. Leliaert in S\*vkaloud et al. | Freshwater Flora of Central Europe | 13: 68 | 2018 |
| Ulva piritoka | Nga\*_ti Kuri, S. Heesch & W.A. Nelson in Heesch et al. | Cryptogamie, Algologie | 42: 134, figs. 2, 4-6 | 2021 |
| Ulva pisiformis | Hudson | image | ||
| Ulva pisum | (O.F. Mueller) Loureiro | image | ||
| Ulva planca | Suhr | image | ||
| Ulva planiramosa | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 465, figs. 21-29 | 2022 |
| Ulva plantaginea | A.W. Roth | image | ||
| Ulva plantaginea var. tenuior | Lyngbye | image | ||
| Ulva plantaginifolia var. tenuior | Lyngbye | image | ||
| Ulva plantaginifolia | Wulfen | image | ||
| Ulva plicata | Müller | image | ||
| Ulva plumosa | Hudson | Fl. Angl. ed. 2: | 571 | 1778 |
| Ulva plumosa | W. Hudson | image | ||
| Ulva pluriramosa | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 467, figs. 52-57 | 2022 |
| Ulva polyclada | G.T. Kraft | Mar. Benth. Alg. Lord Howe Island | 1: 43, 319, fig. 17 | 2007 |
| Ulva polypodioides | A.P. de Candolle in Lamarck & de Candolle, | Flore franc\*,aise, ed. 3, | 2: 15 | 1805 |
| Ulva polypodioides | DC. | image | ||
| Ulva popenguinensis | P.J.L. Dangeard | image | ||
| Ulva porrifolia | (S.G. Gmelin) J.F. Gmelin | Syst. Nat. ed. 13, | 2: 1392 | 1792 |
| Ulva pouliotii | L. Golden & S.C. Lindstrom in Lindstrom et al., | Botanica Marina | 64: 355, figs. 17-19 | 2021 |
| Ulva priapus | Gmelin | image | ||
| Ulva procera | (Ahlner) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 290 | 2003 |
| Ulva profunda | Taylor | image | ||
| Ulva profunda | W.R. Taylor | Publications of the Carnegie Institution of Washington | 379: 57, pl. 3: figs. 2, 3, 16, 17 | 1928 |
| Ulva prolifera | (Forsskål) A.P. de Candolle in Lamarck | Fl. Franc\*,., ed. 3, | 5: 4 | 1815 |
| Ulva prolifera | (P. Forssk.) A.P. de Candolle | image | ||
| Ulva prolifera | Müller | image | ||
| Ulva prolifera | O.F. Müller | Fl. Dan. | 5{13}: 7, pl. DCCLXIII(1) | 1778 |
| Ulva prolifera subsp. blidingiana | G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 95, fig. 8 | 2014 |
| Ulva prolifera subsp. gullmariensis | (Bliding) E. Taskin | Pakistan J. Biol. Sci. | 10: 1936 | 2007 |
| Ulva prolifera subsp. qingdaoensis | J. Cui et al. | Phycologia | 57: 701, figs. 12-15 | 2018 |
| Ulva proliferoides | L. Kraft, G.T. Kraft, & R. Waller | J. Phycol. | 46: 1274, fig. 9 | 2010 |
| Ulva protuberans | J.E. Smith | image | ||
| Ulva pruniformis | Linnaeus | image | ||
| Ulva pseudo-ohnoi | H.W. Lee, J.C. Kang & M.S. Kim | Algae | 34: 257, fig. 3A,B,D-F | 2019 |
| Ulva pseudocurvata | Koeman & van den Hoek | Brit. Phyc. J. | 16: 19, figs. 2-31 | 1981 |
| Ulva pseudolinza | (R.P.T. Koeman & C. van den Hoek) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 2902 | 2003 |
| Ulva pseudorotundata | M. Cormaci, G. Furnari & G. Alongi | Bollettino Accademia Gioenia Sci. Nat. | 47: 159, pl. 27 | 2014 |
| Ulva pulchra | Jaasund | image | ||
| Ulva pulchra | Jaasund | image | ||
| Ulva pulchra | Jaasund | Intertidal seaweeds in Tanzania: | 3, fig. 6 | 1976 |
| Ulva punctata | (Stackhouse) Stackhouse | Trans. Linn. Soc. [London] | 3: 236 | 1797 |
| Ulva punctata | Stackhouse | image | ||
| Ulva purpurascens | W. Hudson | image | ||
| Ulva purpurea | A.W. Roth | image | ||
| Ulva purpurea | Roth | Cat. Bot. | 1: 209 | 1797 |
| Ulva purpurea var. elongata | Lyngbye | image | ||
| Ulva purpurea var. laciniata | Rudolphi | image | ||
| Ulva purpurea var. miniata | C. Agardh | Syn. Alg. Scand.: | 42 | 1817 |
| Ulva purpurea var. umbilicalis | C. Agardh | Syn. Alg. Scand.: | 42 | 1817 |
| Ulva purpurea var. umbilicalis | Rudolphi | image | ||
| Ulva purpurea var. umbilicata | C. Agardh | Sp. Alg. | 1: 406 | 1823 |
| Ulva purpurea var. umbilicata | C. Agardh in S.F. Gray | Nat. Arr. Brit. Pl.: | 344 | 1821 |
| Ulva purpureoviolacea_('purpureo violacea') | Roth | image | ||
| Ulva purpureoviolacea_(`purpureo violacea') | Roth | Tent. Fl. Germ. | 1: 524 | 1788 |
| Ulva pusilla | J.P.F.C. Montagne | image | ||
| Ulva quaternaria | Kützing | Tab. Phycol. | 6: 6, pl. 13: fig. II | 1856 |
| Ulva quaternaria | Kützing | image | ||
| Ulva quilonensis | P. Sindhu & M.V.N. Panikkar | Feddes Repert. | 106: 123, figs. 2/5-2/7 | 1995 |
| Ulva radiata | (J. Agardh) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 290 | 2003 |
| Ulva radicata | A.J. Retzius | image | ||
| Ulva radicata | A.P. de Candolle | image | ||
| Ulva ralfsii | (Harv.) Le Jolis | image | ||
| Ulva ralfsii | (Harvey) Le Jolis | Mém. Soc. Imp. Sci. Nat. Cherbourg | 10: 54 | 1863 |
| Ulva ramosa | (Kützing) De Toni | image | ||
| Ulva ramosa | Hudson | Fl. Angl.: | 476 | 1762 |
| Ulva ramosissima | P.K.A. Schousboe | image | ||
| Ulva ramulosa | J.E. Smith | Engl. Bot. | 30: pl. 2137 | 1810 |
| Ulva ranunculata | G.T. Kraft & A.J.K. Millar in G.T. Kraft | Austral. Syst. Bot. | 13: 534, fig. 12 | 2000 |
| Ulva recisa | Poiret | image | ||
| Ulva refracta 'J.E. | Smith' | image | ||
| Ulva repens | Clemente | image | ||
| Ulva reticulata f. delicatula | Gilbert | image | ||
| Ulva reticulata f. delicatula | Gilbert | image | ||
| Ulva reticulata | Forsskål | Flora aegyptiaco-arabica ... Post mortem auctoris edidit Carsten Niebuhr: | 187 | 1775 |
| Ulva reticulata | Forssk. | image | ||
| Ulva rhacodes | (Holmes) G.F. Papenfuss | image | ||
| Ulva rhacodes | (Holmes) Papenfuss | J. Linn. Soc. London, Bot. | 56: 311 | 1960 |
| Ulva rigida | C. Agardh | Sp. Alg. | 1: 410 | 1823 |
| Ulva rigida | C.A. Agardh | image | ||
| Ulva rigida f. australis | J. Agardh | image | ||
| Ulva rigida f. capensis | (Areschoug) J. Agardh | image | ||
| Ulva rigida f. capensis | J. Agardh | Alg. Syst. | 3: 169 | 1883 |
| Ulva rigida f. cribrosa | J. Agardh | image | ||
| Ulva rigida f. densa | (Kjellman) Feldmann | image | ||
| Ulva rigida f. laciniata | J. Agardh | Alg. Syst. | 19{2}: 169 | 1883 |
| Ulva rigida f. lacinulata | P. Dangeard | image | ||
| Ulva rigida f. myriotrema | (F.T. Kützing) J.G. Agardh | image | ||
| Ulva rigida f. ostreata | P. Dangeard | image | ||
| Ulva rigida f. pacifica | Agardh | image | ||
| Ulva rigida f. rigida | J. Agardh | image | ||
| Ulva rigida f. tropica | Jaasund | image | ||
| Ulva rigida f. tropica | Jaasund | image | ||
| Ulva rigida f. tropica | Jaasund | Intertidal seaweeds in Tanzania: | 3, fig. 8 | 1976 |
| Ulva rivularis | Corda | image | ||
| Ulva rivularis | F.X. Wulfen | image | ||
| Ulva rotundata | Bliding | Bot. Not. | 121: 566, figs. 19-22 | 1969 |
| Ulva rubens | Hudson | Fl. Angl., ed. 2: | 571 | 1778 |
| Ulva rubescens | H.C. Lyngbye | image | ||
| Ulva rubra | Hudson | Fl. Angl., ed. 2: | 571 | 1778 |
| Ulva rugosa | Linnaeus | Mantissa plantarum altera Generum editionis VI., & Specierum editionis II: | 311 | 1771 |
| Ulva rupestris | J.E. Smith | image | ||
| Ulva saccharina | (Linnaeus) DC. | image | ||
| Ulva sagarum | (S.G. Gmelin) J.F. Gmelin | image | ||
| Ulva saifullahii | Amjad & Shameel | Pakistan J. Mar. Sci. | 2: 10, figs. 1b, 4 | 1993 |
| Ulva sanguinea | Bellardi | image | ||
| Ulva sapora | J.A. Phillips, R.J. Lawton, & C. Carl in Phillips et al. | Phycologia | 55: 59, figs. 2-9 | 2016 |
| Ulva scagelii | M. Chihara | Syesis | 1: 92, figs. 3-6, 7:H-Z | 1969 |
| Ulva scandinavica | C.V. Bliding | image | ||
| Ulva schousboei | Bornet | image | ||
| Ulva schroederi | (Agardh) Mertens | image | ||
| Ulva schroederi_('schröderi') | Mertens | image | ||
| Ulva scolopendra | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 469, figs. 58-63 | 2022 |
| Ulva sericea | Wulfen | Crypt. Aquat.: | 5 | 1803 |
| Ulva serrata | A.P. de Candolle in Lamarck & de Candolle | Fl. Franc\*,., ed. 3, | 2: 11 | 1805 |
| Ulva serrata | DC. | image | ||
| Ulva sertolara | (Bertoloni) Pollini | image | ||
| Ulva shanxiensis | Le Chen, Jia Feng, & Shu-lian Xie | Novon | 23: 400, fig. 1 | 2015 |
| Ulva siganiphyllia | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 469, figs. 64-68 | 2022 |
| Ulva simplex | (K.L. Vinogradova) H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 290 | 2003 |
| Ulva simplicissima | Clemente | Ensayo sobre las Variedades de la Vid: | 320 | 1807 |
| Ulva simplicissima | S.R. Clemente | image | ||
| Ulva sinuosa | Mertens ex A.W. Roth | image | ||
| Ulva sinuosa | Mertens ex Roth | Cat. Bot. | 327, pl. XII | 1806 |
| Ulva sobolifera | (Vahl) Lyngbye | image | ||
| Ulva sobolifera | Oeder | image | ||
| Ulva sordida | Areschoug | image | ||
| Ulva sorensenii | V. Chapman | J. Linn. Soc. London, Bot. | 55: 390, fig. 34 | 1956 |
| Ulva sorensenii | V.J. Chapman | image | ||
| Ulva spathulata | Papenfuss | J. Linn. Soc. London, Bot. | 56: 309 | 1960 |
| Ulva spinulosa | Okamura & Segawa | image | ||
| Ulva spiralis | F. Weber & Mohr | Beitr. Naturk. | 1: 280, 316 | 1805 |
| Ulva splendens | F.J. Ruprecht | image | ||
| Ulva splendens | Ruprecht | Alg. Ochot.: | 218 [Tange Ochotsk. Meer.: 410] | 1850 |
| Ulva splitiana | G. Alongi, M. Cormaci, & G. Furnari | Webbia | 69: 90, fig. 3 | 2014 |
| Ulva spongiformis | Müller | image | ||
| Ulva sporadica | Miliarakis | image | ||
| Ulva spumosa | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 469, figs. 69-75 | 2022 |
| Ulva squamaria | (Gmelin) Woodward | image | ||
| Ulva squamaria | (S.G. Gmelin) Woodward | Trans. Linn. Soc. [London] | 3: 51 | 1797 |
| Ulva squamaria_('squammaria') | (Gmelin) Roth | image | ||
| Ulva squarrosa | (G.C. Oeder) J.E. Gunnerus | image | ||
| Ulva stellata | Wulfen in Jacquin | Collectanea ad botanicam, chemiam, et historiam naturalem spectantia, cum figuris | 1: 351 | 1787 |
| Ulva stenophylla | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 7: 282, pl. 26: fig. 2; pl. 29 | 1920 |
| Ulva stenophylla | W.A. Setchell & N.L. Gardner | image | ||
| Ulva stenophylloides | L. Kraft, G.T. Kraft, & R. Waller | J. Phycol. | 46: 1274, fig. 10 | 2010 |
| Ulva stipitata | J.E. Areschoug | image | ||
| Ulva sublitoralis | Segawa | image | ||
| Ulva subulata | (F.X. Wulfen) F.L. Naccari | image | ||
| Ulva subulata | (Wulfen) Naccari | Fl. Venet. | 6: 73 | 1828 |
| Ulva taeniata | (Setchell) Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 7: 286 | 1920 |
| Ulva taeniata | (W.A. Setchell) W.A. Setchell & N.L. Gardner | image | ||
| Ulva tanneri | H.S. Hayden & J.R. Waaland in H.S. Hayden, J. Blomster, C.A. Maggs, P.C. Silva, M.J. Stanhope, & J.R. Waaland | Eur. J. Phycol. | 38: 285 | 2003 |
| Ulva tenella | F.T. Kützing | image | ||
| Ulva tenella | Lenormand ex Kützing | image | ||
| Ulva tenera | P. Kornmann & P.-H. Sahling | Helgoländer Meeresuntersuchungen | 48: 374, figs. 3-5 | 1994 |
| Ulva tentaculosa | L. Lagourgue & C. Payri in Lagourgue et al., | European Journal of Phycology | 57: 467, figs. 40-45 | 2022 |
| Ulva tenuissima | Schousboe | image | ||
| Ulva tepida | Y. Masakiyo & S. Shimada | Bull. Natl. Sci. Mus., Tokyo, Ser. B (Bot.), | 40: 11, figs. 4, 16-33 | 2014 |
| Ulva terrestris | A.W. Roth | image | ||
| Ulva terrestris | Roth | Cat. Bot. | 1: 211 | 1797 |
| Ulva tesellata | Hook. f. & Harvey | image | ||
| Ulva tetragona | A.P. de Candolle | Mém. Agric. Soc. Agric. Dép. Seine | 38 [tome 10]: 239 | 1807 |
| Ulva thermalis | Kützing | image | ||
| Ulva thrix | (Stackhouse) F. Weber & Mohr | Beitr. Naturk. | 1: 316, 321 | 1805 |
| Ulva thuretii_('Thureti') | B. Föyn | image | ||
| Ulva tomentosa | (Hudson) DC. | image | ||
| Ulva torta | (Agardh) Trevisan | image | ||
| Ulva torta | (Mertens) Trevisan | Atti Terza Riun. Sci. Ital. [Firenze, 1841]: | 480 | 1841 |
| Ulva tournefortii | (Lamouroux) Pollini | image | ||
| Ulva tremelloides | (Bertoloni) Pollini | image | ||
| Ulva trichophylla | Kützing | image | ||
| Ulva trichophylla | Kützing | image | ||
| Ulva tubelliformis | Schousboe | image | ||
| Ulva tuberosa | P. Beauv. | image | ||
| Ulva tuberosa | Palisot de Beauvois | Fl. Oware | 1: expl. pl. XIII: fig. 1 | 1805 (20.v) |
| Ulva turbinata | Pollini | image | ||
| Ulva turbinata | Pollini | image | ||
| Ulva turneri | Dillwyn ex J.E. Smith | Engl. Bot.: | 36, pl. 2570 | 1814 |
| Ulva ulvella | H. Davies | image | ||
| Ulva umbilicalis | Linnaeus | Sp. Pl.: | 1163 | 1753 |
| Ulva umbilicalis var. elongata | Greville | Fl. Edin.: | 299 | 1824 |
| Ulva umbilicalis var. lanceolata | Lyngbye | image | ||
| Ulva umbilicalis var. lanceolata | Lyngbye in J. Agardh | Alg. Syst. | 3: 66 | 1883 |
| Ulva umbilicalis var. purpurea | (Roth) Wahlenberg | Fl. Lapp.: | 506 | 1812 |
| Ulva umbilicalis var. purpurea | Wahlenberg | image | ||
| Ulva umbilicata 'J.E. | Smith' | image | ||
| Ulva umbilicata | S.F. Gray | image | ||
| Ulva umbilicata | S.F. Gray | Nat. Arr. Brit. Pl.: | 344 | 1821 |
| Ulva uncialis | (Kützing) Montagne | Ann. Sci. Nat. Bot., ser. 3, | 13: 248 | 1850 |
| Ulva uncialis | (Kützing) Montagne | image | ||
| Ulva uncialis | Suhr | image | ||
| Ulva uncialis | Suhr mscr. | image | ||
| Ulva uncinata | Mertens in Weber & Mohr | Index Mus. Pl. Crypt.: | [9] | 1803 |
| Ulva uncinata | Mohr in C. Agardh | Syn. Alg. Scand.: | XXII | 1817 |
| Ulva uncinata | Mohr mss. | image | ||
| Ulva uncinata | Mohr probably mscr. | image | ||
| Ulva undulata | Raddi (cont.) | image | ||
| Ulva undulata | Raddi | image | ||
| Ulva undulata | Turra | image | ||
| Ulva usneoides | Bonnemaison in J. Agardh | Alg. Syst. | 3: 159 [misnumbered 157] | 1883 |
| Ulva utricularis | (Roth) C. Agardh | Syn. Alg. Scand.: | XXII | 1817 |
| Ulva utriculata | Poiret | image | ||
| Ulva utriculosa | C. Agardh in J. Agardh | Alg. Syst. | 3: 123 | 1883 |
| Ulva uvoides | Bory | image | ||
| Ulva velutina | (Lyngbye) Sommerfelt | image | ||
| Ulva ventricosa | A.P. de Candolle | Mém. Agric. Soc. Agric. Dép. Seine | 38 [tome 10]: 232 | 1807 |
| Ulva ventricosa | Poiret | image | ||
| Ulva venusta | Schousboe | image | ||
| Ulva vermicularis | Roth | image | ||
| Ulva vermicularis | Schousboe | image | ||
| Ulva vermicularis | Schrank | image | ||
| Ulva verticillata | Velley | image | ||
| Ulva verticillata | Withering | Arr. Brit. Pl., ed. 3, | 4: 127 | 1796 |
| Ulva vesiciformis_('vesicaeformis') | Delarbre | image | ||
| Ulva vexata | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 7: 282, pl. 22: figs. 4-7 | 1920 |
| Ulva vexata | W.A. Setchell & N.L. Gardner | image | ||
| Ulva vietnamensis | L.-A.T. Tran, F. Leliaert & O. De Clerck in Tran et al., | Phycological Research | 71: 20, fig. 4 | 2022 |
| Ulva vilis | Hudson M.S. | image | ||
| Ulva vinosa | Gouan | image | ||
| Ulva viridis | Forssk. | image | ||
| Ulva woodwartii | Poiret | image | ||
| ULVACEAE 'Kützing' | image | |||
| ULVACEAE | Areschoug | image | ||
| ULVACEAE | Bessey | image | ||
| ULVACEAE | Bory | image | ||
| ULVACEAE | Borzi | image | ||
| ULVACEAE | C. Agardh | image | ||
| ULVACEAE | Chevallier | image | ||
| ULVACEAE | Decaisne | image | ||
| ULVACEAE | Dumortier | image | ||
| ULVACEAE | Endlicher | image | ||
| ULVACEAE | Fries | image | ||
| ULVACEAE | Greville | image | ||
| ULVACEAE | Haeckel | image | ||
| ULVACEAE | Harvey | image | ||
| ULVACEAE | Kützing | Linnaea | 17: 93 | 1843 (26-28.iv) |
| ULVACEAE | Kützing | image | ||
| ULVACEAE | Link | image | ||
| ULVACEAE | Rabenhorst | image | ||
| ULVACEAE | Reichenbach | image | ||
| ULVACEAE | Sprengel | image | ||
| ULVACEAE | Walls | image | ||
| ULVACEES | Lamouroux | image | ||
| ULVACEES | Thuret | image | ||
| ULVALES | Bessey | image | ||
| ULVALES | Blackman & Tansley | image | ||
| ULVALES | G.S. West | image | ||
| ULVAPHYCEAE | Stewart & Mattox | image | ||
| ULVAPHYTA | E. Möhn | System und Phylogenie der Lebewesen | 1: 138 | 1984 |
| ULVARIA | (Ruprecht) J. Agardh \{also on card: [subgenus] of Monostroma] | image | ||
| ULVARIA | F.J. Ruprecht | image | ||
| Ulvaria blyttii | (Areschoug) J. Agardh | Alg. syst. | 3: legend to pl. III: figs. 93, 94 | 1883 |
| Ulvaria blyttii | (Areschoug) Vinogradova | Nov. Sist. Nizsh. Rast. [Bot. Inst. Akad. Nauk SSSR] | 1967: 117 | 1967 |
| Ulvaria blyttii | (J.E. Areschoug) Vinogradova | image | ||
| Ulvaria fusca 'Ruprecht' | image | |||
| Ulvaria fusca | (P. & R.) Vinogradova | image | ||
| Ulvaria fusca | (Wittrock) Vinogradova | Nov. Sist. Nizsh. Rast. [Bot. Inst. Akad. Nauk SSSR] | 1967: 115 | 1967 |
| Ulvaria obscura | (F.T. Kützing) P. Gayral | image | ||
| Ulvaria obscura | (Kützing) P. Gayral ex Bliding | Bot. Not. | 121: 574 | 1969 |
| Ulvaria obscura | (Kützing) P. Gayral | C.R. Acad. Sci. [Paris] | 258: 2151 | 1964 |
| Ulvaria obscura var. blyttii | (Areschoug) Bliding | Bot. Not. | 121: 574 | 1969 |
| Ulvaria obscura var. blyttii | (J.E. Areschoug) C.V. Bliding | image | ||
| Ulvaria oxysperma | (F.T. Kützing) C.V. Bliding | image | ||
| Ulvaria oxysperma | (Kützing) Bliding | Bot. Not. | 121: 585 | 1969 |
| Ulvaria oxysperma f. wittrockii | (Bornet) Bliding | image | ||
| Ulvaria oxysperma var. orbiculata | (Thuret) Bliding | image | ||
| Ulvaria shepherdii | Womersley | image | ||
| Ulvaria splendens 'Ruprecht' | image | |||
| Ulvaria splendens | (F.J. Ruprecht) J.G. Agardh | image | ||
| Ulvaria splendens | (F.J. Ruprecht) K.L. Vinogradova | image | ||
| Ulvaria splendens | (Ruprecht) J. Agardh | Alg. Syst. | 3: expl. pl. III: figs. 91-92 | 1883 |
| Ulvaria splendens | (Ruprecht) K.L. Vinogradova | Opred. Vodor. Dal'nevost. Morej SSSR, Zelen. Vodor.: | 109 | 1979 |
| ULVARIEAE | Dumortier | image | ||
| ULVASTRUM | J.E. Duby | image | ||
| UMBRAULVA | E.H. Bae & I.K. Lee | Algae | 16: 230 | 2001 |
| Umbraulva amamiensis | (Tak. Tanaka) E.H. Bae & I.K. Lee | Algae | 16: 230 | 2001 |
| Umbraulva dangeardii | M.J. Wynne & G. Furnari | Nova Hedwigia | 98: 518, fig. 3 | 2014 |
| Umbraulva japonica | (E.M. Holmes) E.H. Bae & I.K. Lee | Algae | 16: 230 | 2001 |
| Umbraulva kaloakulau | H.L. Spalding & A.R. Sherwood in Spalding et al. | J. Phycol. | 52: 47, figs. 2d, 4 | 2016 |
| Umbraulva kuaweuweu | H.L. Spalding & A.R. Sherwood in Spalding et al. | J. Phycol. | 52: 45, figs. 2c, 3 | 2016 |
| Umbraulva olivascens | E.H. Bae & I.K. Lee | Algae | 16: 230 | 2001 |
| Umbraulva olivascens | G. Furnari in M. Catra, G. Alongi, D. Serio, M. Cormaci, & G. Furnari | Nova Hedwigia | 82: 528, 529 | 2006 |
| Umbraulva yunseulla | H.W. Lee, E.H. Bae & M.S. Kim | Algae | 35: 351, fig.4 | 2020 |
| Volvox ulva | Girod-Chantrans | image | ||
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