| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Amansia fraxinifolia | (Mertens ex Turner) C. Agardh | Sp. Alg.: | 194 | 1822 |
| Amansia mamillaris | Lamouroux ex C. Agardh | Sp. Alg.: | 193 | 1822 |
| Amansia prolifera | C. Agardh | Sp. Alg.: | 194 | 1822 |
| Anadyomene obscura | C. Agardh | Sp. Alg.: | 401 | 1823 |
| Bonnemaisonia elegans | C. Agardh | Sp. Alg.: | 198 | 1822 |
| Bryopsis arbuscula | C. Agardh | Sp. Alg.: | 451 | 1823 |
| Bryopsis composita | C. Agardh | Sp. Alg.: | 451 | 1823 |
| Bryopsis plumosa | (Hudson) C. Agardh | Sp. Alg.: | 448 | 1823 |
| Bryopsis rosae ('rosa') | C. Agardh | Sp. alg. | 1(2): 450 | 1823 |
| Caulerpa clavifera var. uvifera | (C. Agardh) C. Agardh | Sp. Alg. | 438 | 1823 |
| Caulerpa freycinetii | C. Agardh | Sp. Alg. | 1(2): 446 | 1823 |
| Caulerpa hypnoides | C. Agardh | Sp. Alg. | 1{2}: 443 | 1823 |
| Caulerpa longifolia | C. Agardh | Sp. Alg. | 1(2): 437 | 1823 |
| Caulerpa plumaris | (Forsskål) C. Agardh | Sp. Alg. | 436 | 1823 |
| Caulerpa selago var. brownii | C. Agardh | Sp. Alg. | 1: 442 | 1823 |
| Caulerpa simpliciuscula | (R. Brown ex Turner) C. Agardh | Sp. Alg. | 439 | 1823 |
| Caulerpa taxifolia var. crassifolia | C. Agardh | Sp. Alg. | 1(2): 436 | 1823 |
| Chondria articulata var. linearis | C. Agardh | Sp. Alg. | 1(2): 358 | 1822 |
| Chondria delilei ('delilii') | C. Agardh | Sp. Alg. | 363 | 1822 |
| Chondria filiformis | C. Agardh | Sp. Alg. | 1(2): 358 | 1822 |
| Chondria muscoides | (Linnaeus) C. Agardh | Sp. alg. | 1: 361 | 1822 |
| Chondria obtusa var. gracilis | C. Agardh | Sp. Alg. | 1: 342 | 1822 |
| Chondria obtusa var. paniculata | C. Agardh | Sp. Alg. | 1: 343 | 1822 |
| Chondria obtusa var. virgata | C. Agardh | Sp. Alg. | 1: 343 | 1822 |
| Chondria ovalis var. obovata | C. Agardh | Sp. Alg.: | 349 | 1822 |
| Chondria ovalis var. subarticulata | (Turner) C. Agardh | Sp. alg. | 1(2): 350 | 1822 |
| Chondria papillosa | C. Agardh | Sp. Alg. | 1: 344 | 1822 |
| Chondria pinnatifida var. elata | C. Agardh | Sp. Alg.: | 340 | 1822 |
| Chondria pinnatifida var. osmunda | (S.G. Gmelin) C. Agardh | Sp. alg. | 1(2): 338 | 1822 |
| Chondria ramentacea | C. Agardh | Sp. Alg. | 1(2): 354 | 1822 |
| Chondria seticulosa | (Forsskål) C. Agardh | Sp. Alg. | 1{2}: 345 | 1822 |
| Chondria tenuissima var. minuta | C. Agardh | Sp. Alg. | 1(2): 352 | 1822 |
| Codium adhaerens | C. Agardh | Sp. alg. | 1: 457 | 1823 |
| Codium elongatum | (Turner) C. Agardh | Sp. Alg.: | 454 | 1823 |
| Delesseria bonnemaisonii_(`bonnemaisoni') | C. Agardh | Sp. Alg. | 1: 186 | 1822 |
| Delesseria chordalis | C. Agardh | Sp. Alg. | 1: 189 | 1822 |
| Delesseria lacerata var. uncinata | (Turner) C. Agardh | Sp. alg. | 1(2): 185 | 1822 |
| Delesseria plocamium var. costata | C. Agardh | Sp. Alg. | 1(2): 181 | 1822 |
| Delesseria plocamium var. procera | C. Agardh | Sp. Alg. | 1(2): 181 | 1822 |
| Delesseria plocamium var. uncinata | C. Agardh | Sp. Alg. | 1: 181 | 1822 |
| Delesseria ramentacea | C. Agardh | Sp. Alg. | 2(1): 177 | 1822 |
| Digenea simplex | (Wulfen) C. Agardh | Sp. Alg. | 389 | 1822 |
| Encoelium clathratum | C. Agardh | Sp. Alg. | 412 | 1823 |
| Fucus membranaceus var. latifolius | Turner in C. Agardh | Sp. Alg. | 1: 242 | 1822 |
| Grateloupia filicina | (Lamouroux) C. Agardh | Sp. Alg. | 223 | 1822 |
| Halymenia elongata | C. Agardh | Sp. Alg. | 1(2): 209 | 1822 |
| Halymenia furcellata | (Turner) C. Agardh | Sp. alg. | 1(2): 212 | 1822 |
| Halymenia furcellata var. capensis | C. Agardh | Sp. Alg. | 1: 214 | 1822 |
| Halymenia platyna | C. Agardh | Sp. Alg. | 1(2): 206 | 1822 |
| Halymenia trigona | (Clemente) C. Agardh | Sp. alg. | 1(2): 211 | 1822 |
| Liagora pulverulenta | C. Agardh | Sp. Alg. | 396 | 1822 |
| Liagora viscida | (Forsskål) C. Agardh | Sp. Alg. | 395 | 1822 |
| Oneillia elegans | (Lamouroux) C. Agardh | Sp. Alg. | 170 | 1822 |
| PORPHYRA | C. Agardh | Sp. Alg. | 1: 404 | 1823 |
| Polyphysa peniculus | (R. Brown ex Turner) C. Agardh | Sp. Alg. | 1: 473 | 1823 |
| Ptilota asplenioides | (Esper) C. Agardh | Sp. alg. | 1(2): 387 | 1822 |
| Ptilota densa | C.A. Agardh | Sp. alg. | 1: 387 | 1822 |
| Ptilota flaccida | (Lamouroux) C. Agardh | Synopsis algarum Scandinaviae: | XIX | 1817 |
| Rhodomela cloiophylla | C. Agardh | Sp. Alg. | 1: 375 | 1822 |
| Rhodomela dorsifera | C. Agardh | Sp. Alg. | 1(2): 372 | 1822 |
| Rhodomela fimbriata | (Lamouroux) C. Agardh | Sp. alg. | 1(2): 372 | 1822 |
| Rhodomela floccosa | (Esper) C. Agardh | Sp. alg. | 1(2): 376 | 1822 |
| Rhodomela larix | (Turner) C. Agardh | Sp. alg. | 1(2): 376 | 1822 |
| Rhodomela pinastroides | C. Agardh | Sp. Alg. | 381 | 1822 |
| Rhodomela tridens | (Mertens ex Turner) C. Agardh | Sp. Alg. | 373 | 1822 |
| Rhodomela tridens var. spiralis | (Lamouroux) C. Agardh | Sp. Alg. | 374 | 1822 |
| Rhodomela volubilis | (Linnaeus) C. Agardh | Sp. alg. | 1(2): 374 | 1822 |
| Sphaerococcus alveatus | (Turner) C. Agardh | Sp. alg. | 1: 272 | 1822 |
| Sphaerococcus cartilagineus var. setaceus | C. Agardh | Sp. Alg. | 288 | 1822 |
| Sphaerococcus compressus | C. Agardh | Sp. Alg. | 1: 308 | 1822 |
| Sphaerococcus concinnus var. immersus | C. Agardh | Sp. Alg. | 1: 312 | 1822 |
| Sphaerococcus confervoides var. gracilis | (Stackhouse) C. Agardh | Sp. alg. | 1: 307 | 1822 |
| Sphaerococcus confervoides var. ramulosus | C. Agardh | Sp. alg. | 1: 305 | 1822 |
| Sphaerococcus confervoides var. verrucosus | (Hudson) C. Agardh | Sp. alg. | 1: 306 | 1822 |
| Sphaerococcus corneus var. capillaceus | (S.G. Gmelin) C. Agardh | Sp. alg. | 1: 282 | 1822 |
| Sphaerococcus corneus var. clavatus | (Lamouroux) C. Agardh | Sp. alg. | 1: 284 | 1822 |
| Sphaerococcus corneus var. pristoides | C. Agardh | Sp. alg. | 1: 282 | 1822 |
| Sphaerococcus corneus var. pulchellus | (Turner) C. Agardh | Sp. alg. | 1: 283 | 1822 |
| Sphaerococcus corneus var. pulvinatus | C. Agardh | Sp. Alg. | 1: 284 | 1822 |
| Sphaerococcus crassifolius | C. Agardh | Sp. alg. | 1: 273 | 1822 |
| Sphaerococcus cristatus var. fabricianus | (Lyngbye) C. Agardh | Sp. alg. | 1: 301 | 1822 |
| Sphaerococcus divergens | C. Agardh | Sp. alg. | 1: 325 | 1822 |
| Sphaerococcus durus | C. Agardh | Sp. Alg. | 1: 310 | 1822 |
| Sphaerococcus fimbriatus | C. Agardh | Sp. Alg. | 1: 299 | 1822 |
| Sphaerococcus fragilis | C. Agardh | Sp. Alg. | 1: 253 | 1822 |
| Sphaerococcus furcellatus | C. Agardh | Sp. Alg. | 1: 253 | 1822 |
| Sphaerococcus gelatinus | (Esper) C. Agardh | Sp. Alg.: | 270 | 1822 |
| Sphaerococcus horridus | C. Agardh | Sp. alg. | 1: 322 | 1822 |
| Sphaerococcus intricatus | C. Agardh | Sp. Alg. | 1: 333 | 1822 |
| Sphaerococcus isiformis | C. Agardh | Sp. Alg. | 271 | 1822 |
| Sphaerococcus labillardierei ('labillardieri') | (Mertens ex Turner) C. Agardh | Syn.: | xvi | 1817 |
| Sphaerococcus lactuca | C. Agardh | Sp. Alg. | 1: 231 | 1822 |
| Sphaerococcus lactuca var. concretus | C. Agardh | Sp. Alg. 1: | 232 | 1822 |
| Sphaerococcus lactuca var. luxurians | C. Agardh | Sp. Alg. 1: | 232 | 1822 |
| Sphaerococcus lichenoides var. tenuis | C. Agardh | Sp. Alg. 1: | 310 | 1822 |
| Sphaerococcus lividus | (Turner) C. Agardh | Sp. alg. | 1: 276 | 1822 |
| Sphaerococcus microcarpus | C. Agardh | Sp. Alg. | 1: 255 | 1822 |
| Sphaerococcus multipartitus var. elongatus | (Clemente) C. Agardh | Sp. alg. | 1: 248 | 1822 |
| Sphaerococcus multipartitus var. lichenoides | (Turner) C. Agardh | Sp. Alg. | 1: 249 | 1822 |
| Sphaerococcus musciformis | (Wulfen) C. Agardh | Syn. Alg. Scand.: | XVII | 1817 |
| Sphaerococcus musciformis var. armatus | C. Agardh | Sp. Alg. | 328 | 1822 |
| Sphaerococcus musciformis var. valentiae | (Turner) C. Agardh | Sp. alg. | 1: 328 | 1822 |
| Sphaerococcus oppositifolius | C. Agardh | 1: Sp. Alg. | 294 | 1822 |
| Sphaerococcus palmetta var. crassiusculus | (Turner) C. Agardh | Sp. alg. | 1: 246 | 1822 |
| Sphaerococcus pedicellatus | C. Agardh | Sp. Alg. | 1: 321 | 1822 |
| Sphaerococcus radula | (Esper) C. Agardh | Sp. alg. | 1: 268 | 1822 |
| Sphaerococcus repens | C. Agardh | Sp. Alg. | 1: 244 | 1822 |
| Sphaerococcus revolutus | C. Agardh | Sp. Alg. | 1: 334 | 1822 |
| Sphaerococcus rigens | C. Agardh | Sp. Alg. | 1: 332 | 1822 |
| Sphaerococcus rigidus | C. Agardh | Sp. Alg. | 285 | 1822 |
| Sphaerococcus salicornia var. simplicior | C. Agardh | Sp. Alg. | 303 | 1822 |
| Sphaerococcus spermophorus | (Linnaeus) C. Agardh | Sp. Alg. | 247 | 1822 |
| Sphaerococcus spinellus | C. Agardh | Sp. Alg. | 323 | 1822 |
| Sphaerococcus spinosus | C. Agardh | Sp. Alg. | 271 | 1822 |
| Sphaerococcus sternbergii | C. Agardh | Sp. alg. | 1: 275 | 1822 |
| Sphaerococcus subulatus | C. Agardh | Sp. Alg. | 328 | 1822 |
| Sphaerococcus usneoides | C. Agardh | Sp. Alg. | 1: 333 | 1822 |
| Sphaerococcus ustulatus | (Turner) C. Agardh | Sp. Alg. | 1: 324 | 1822 |
| Sphaerococcus verruculosus | (Bertoloni) C. Agardh | Sp. alg. | 1: 265 | 1822 |
| Thamnophora corallorhiza | (Turner) C. Agardh | Sp. Alg. | 225 | 1822 |
| Thamnophora seaforthii | (Turner) C. Agardh | Sp. alg. | 1(2): 227 | 1822 |
| Thamnophora triangularis | C. Agardh | Sp. Alg. | 226 | 1822 |
| ULVA tribus SOLENIA | C. Agardh | Sp. Alg. | 1: 417 | 1823 |
| Ulva bertolonii_(`bertoloni') | C. Agardh | Sp. Alg. | 1: 417 | 1823 |
| Ulva clathrata var. uncinata | (Lyngbye) C. Agardh | Sp. Alg. | 1: 423 | 1823 |
| Ulva compressa var. crinita | (Nees) C. Agardh | Sp. Alg. | 1: 421 | 1823 |
| Ulva compressa var. prolifera | (O.F. Müller) C. Agardh | Sp. Alg. | 1: 421 | 1823 |
| Ulva fulvescens | C. Agardh | Sp. Alg. | 1: 420 | 1823 |
| Ulva intestinalis var. cornucopiae | (Lyngbye) C. Agardh | Sp. Alg. | 1: 419 | 1823 |
| Ulva intestinalis var. maxima | C. Agardh | Sp. Alg. | 1: 419 | 1823 |
| Ulva laciniata var. umbilicata | C. Agardh | Sp. Alg. | 1: 405 | 1823 |
| Ulva linza var. lanceolata | (Linnaeus) C. Agardh | Sp. Alg. | 1: 413 | 1823 |
| Ulva percursa | (C. Agardh) C. Agardh | Sp. Alg. | 1: 424 | 1823 |
| Ulva purpurea var. umbilicata | C. Agardh | Sp. Alg. | 1: 406 | 1823 |
| Ulva rigida | C. Agardh | Sp. Alg. | 1: 410 | 1823 |
| Valonia aegagropila | C. Agardh | Sp. Alg. | 1: 429 | 1823 |
| Valonia favulosa | C. Agardh | Sp. Alg. | 1: 432 | 1823 |
| Valonia intricata | (Clemente y Rubio) C. Agardh | Sp. Alg. | 1: 430 | 1823 |
| Valonia utricularis | (Roth) C. Agardh | Sp. Alg. | 1: 431 | 1823 |
| Vaucheria fusca | C. Agardh | Sp. Alg. | 1: 472 | 1823 |