| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Acrocarpus gracilis | Kützing | Species algarum: | 761 | 1849 |
| Acrocarpus pusillus | (Stackhouse) Kützing | Species algarum: | 762 | 1849 |
| Aglaophyllum multipartitum | (J. Hooker & Harvey) Kützing | Species algarum: | 868 | 1849 |
| Allogonium confervaceum var. kochianum | Kützing | Sp. Alg.: | 364 | 1849 |
| Allogonium confervaceum var. tergestinum | Kützing | Sp. Alg.: | 364 | 1849 |
| Anabaina mollis | Kützing | Species algarum: | 287 | 1849 |
| Anthophycus longifolius | (Turner) Kützing | Species algarum: | 605 | 1849 |
| Arthrosiphon densus | A. Braun ex Kützing | Sp. Alg.: | 894 | 1849 |
| Ascothamnion intricatum | (Clemente y Rubio) Kützing | Species algarum: | 508 | 1849 |
| Batrachospermum cayennense | Montagne ex Kützing | Sp. Alg.: | 537 | 1849 |
| Batrachospermum guianense | (Montagne) Kützing | Sp. Alg.: | 537 | 1849 |
| Blossevillea fallax | (Sonder) Kützing | Species algarum: | 361 | 1849 |
| Blossevillea grevillei | (C. Agardh ex Sonder) Kützing | Species algarum: | 629 | 1849 |
| Botryocarpa ecostata | (J. Agardh) Kützing | Species algarum: | 880 | 1849 |
| Botryococcus braunii | Kützing | Spec. Algarum: | 892 | 1849 |
| Bryopsis cespitosa | Suhr ex Kützing | Species algarum: | 490 | 1849 |
| Bryopsis leprieurii | Kützing | Species algarum: | 490 | 1849 |
| Bryopsis plumosa var. hypnoides | (Lamouroux) Kützing | Sp. Alg.: | 493 | 1849 |
| Bulbotrichia peruana | Kützing | Sp. Alg.: | 429 | 1849 |
| Callithamnion acanthophorum | Kützing | Sp. Alg.: | 647 | 1849 |
| Callithamnion borreri var. elongatum | Kützing | Species algarum: | 643 | 1849 |
| Callithamnion humile | Kützing | Sp. Alg.: | 639 | 1849 |
| Callithamnion luxurians | J. Agardh ex Kützing | Sp. Alg.: | 639 | 1849 |
| Callithamnion pygmaeum | Kützing | Species algarum: | 640 | 1849 |
| Callophyllis coccinea | (Harvey) Kützing | Species algarum: | 746 | 1849 |
| Callophyllis hombroniana | (Montagne) Kützing | Species algarum: | 746 | 1849 |
| Callophyllis lambertii | (Turner) Kützing | Species algarum: | 747 | 1849 |
| Carpacanthus biformis | (Sonder) Kützing | Species algarum: | 625 | 1849 |
| Carpacanthus distichus | (Sonder) Kützing | Species algarum: | 622 | 1849 |
| Carpacanthus gaudichaudii | (Montagne) Kützing | Species algarum: | 623 | 1849 |
| Carpacanthus hombronianus | (Montagne) Kützing | Species algarum: | 624 | 1849 |
| Carpacanthus ilicifolius | (Turner) Kützing | Species algarum: | 625 | 1849 |
| Carpacanthus ilicifolius var. marginatus | (C. Agardh) Kützing | Species algarum: | 625 | 1849 |
| Carpacanthus latifolius | (C. Agardh) Kützing | Sp. Alg.: | 625 | 1849 |
| Carpacanthus microphyllus | (C. Agardh) Kützing | Species algarum: | 622 | 1849 |
| Carpacanthus oligocystus | (Montagne) Kützing | Species algarum: | 624 | 1849 |
| Carpacanthus subalatus | (Sonder) Kützing | Species algarum: | 622 | 1849 |
| Carpacanthus suhrii | Kützing | Species algarum: | 624 | 1849 |
| Carpacanthus tristichus | (Sonder) Kützing | Species algarum: | 622 | 1849 |
| Carpacanthus turneri | Kützing | Species algarum: | 624 | 1849 |
| Carpoblepharis flaccida | (Lamouroux) Kützing | Species algarum: | 690 | 1849 |
| Carpothamnion gunnianum | (Harvey) Kützing | Species algarum: | 668 | 1849 |
| Caulacanthus spinellus | (J. Hooker & Harvey) Kützing | Species algarum: | 753 | 1849 |
| Caulerpa mexicana | Sonder ex Kützing | Species algarum: | 496 | 1849 |
| Caulerpa pectinata | Kützing | Species algarum: | 495 | 1849 |
| Ceramium irregulare | Kützing | Species algarum: | 687 | 1849 |
| Ceramium planum | Kützing | Species algarum: | 687 | 1849 |
| Chaetomorpha aerea | (Dillwyn) Kützing | Sp. alg.: | 379 | 1849 |
| Chaetomorpha alternata | Kützing | Sp. Alg.: | 378 | 1849 |
| Chaetomorpha chlorotica | (Montagne) Kützing | Species algarum: | 377 | 1849 |
| Chaetomorpha coliformis | (Montagne) Kützing | Sp. alg.: | 380 | 1849 |
| Chaetomorpha darwinii | (J. Hooker & Harvey) Kützing | Sp. alg.: | 380 | 1849 |
| Chaetomorpha implexa | Kützing | Species algarum: | 376 | 1849 |
| Chaetomorpha indica | (Kützing) Kützing | Species algarum: | 376 | 1849 |
| Chaetomorpha inflata | Kützing | Species algarum: | 378 | 1849 |
| Chaetomorpha intestinalis | Kützing | Species algarum: | 380 | 1849 |
| Chaetomorpha ligustica | (Kützing) Kützing | Species algarum: | 376 | 1849 |
| Chaetomorpha media | (C. Agardh) Kützing | Sp. alg.: | 380 | 1849 |
| Chaetomorpha nodosa | Kützing | Sp. Alg.: | 376 | 1849 |
| Chaetomorpha pacifica | Kützing | Species algarum: | 379 | 1849 |
| Chaetomorpha tortuosa | Kützing | Species algarum: | 376 | 1849 |
| Chaetomorpha valida | (J. Hooker & Harvey) Kützing | Species algarum: | 379 | 1849 |
| Chaetophora tuberculata | "Müller" in Kützing | Sp. Alg.: | 425 | 1849 |
| Chantransia alpina | Kützing | Sp. Alg.: | 431 | 1849 |
| Chantransia chalybea var. major | Kützing | Sp. Alg.: | 429 | 1849 |
| Chantransia chalybea var. muscicola | Kützing | Sp. Alg.: | 430 | 1849 |
| Chantransia chalybea var. radians | Kützing | Sp. Alg.: | 430 | 1849 |
| Chantransia violacea var. hercynica | (Kützing) Kützing | Sp. Alg.: | 431 | 1849 |
| Chara alopecuroidea | Delile ex Kützing | Sp. Alg.: | 518 | 1849 |
| Chara alopecuroidea var. papulosa | (Wallroth) Kützing | Sp. Alg.: | 519 | 1849 |
| Chara montagnei | A. Braun in Kützing | Sp. Alg.: | 518 | 1849 |
| Chauvinia chemnitzia | (Esper) Kützing | Species algarum: | 499 | 1849 |
| Chauvinia cylindracea | (Sonder) Kützing | Species algarum: | 498 | 1849 |
| Chauvinia hypnoides | Kützing | Sp. Alg.: | 497 | 1849 |
| Chauvinia mamillosa | (Montagne) Kützing | Species algarum: | 498 | 1849 |
| Chauvinia peltata | (Lamouroux) Kützing | Sp. Alg.: | 499 | 1849 |
| Chauvinia simpliciuscula | (R. Brown ex Turner) Kützing | Species algarum: | 499 | 1849 |
| Chondroclonium chamissoi | (C. Agardh) Kützing | Species algarum: | 740 | 1849 |
| Chondroclonium cornutum | Kützing | Species algarum: | 741 | 1849 |
| Chondrothamnion clavellosum var. confertum | De Notaris ex Kützing | Sp. alg.: | 859 | 1849 |
| Chondrus capensis | (C. Agardh) Kützing | Sp. alg.: | 738 | 1849 |
| Chondrus complicatus | Kützing | Sp. Alg.: | 737 | 1849 |
| Chondrus coriaceus | Kützing | Species algarum: | 736 | 1849 |
| Chondrus polycladus | Kützing | Sp. Alg.: | 737 | 1849 |
| Cladophora aculeata | Kützing | Sp. Alg.: | 419 | 1849 |
| Cladophora aegiceras | (Montagne) Kützing | Sp. Alg.: | 418 | 1849 |
| Cladophora afra | Kützing | Sp. Alg.: | 411 | 1849 |
| Cladophora allantoides | (Montagne) Kützing | Sp. Alg.: | 408 | 1849 |
| Cladophora arcta | (Dillwyn) Kützing | Sp. Alg.: | 417 | 1849 |
| Cladophora catenifera | Kützing | Species algarum: | 390 | 1849 |
| Cladophora composita | (Harvey) Kützing | Species algarum: | 415 | 1849 |
| Cladophora cristata | Kützing | Sp. Alg.: | 404 | 1849 |
| Cladophora echinus | (Biasoletto) Kützing | Species algarum: | 414 | 1849 |
| Cladophora ecklonii | Kützing | Species algarum: | 395 | 1849 |
| Cladophora flagelliformis | (Suhr) Kützing | Species algarum: | 388 | 1849 |
| Cladophora forsskalii ('forskalii') | Kützing | Species algarum: | 416 | 1849 |
| Cladophora hamosa | (Kützing) Kützing | Species algarum: | 397 | 1849 |
| Cladophora heteropsis | Kützing | Species algarum: | 392 | 1849 |
| Cladophora linnaei | (Kützing) Kützing | Sp. Alg.: | 413 | 1849 |
| Cladophora mauritiana | Kützing | Species algarum: | 399 | 1849 |
| Cladophora modonensis | Kützing | Species algarum: | 416 | 1849 |
| Cladophora montagneana | Kützing | Species algarum: | 415 | 1849 |
| Cladophora montagnei | Kützing | Sp. alg.: | 415 | 1849 |
| Cladophora nitidula | (Sonder) Kützing | Species algarum: | 391 | 1849 |
| Cladophora oxyclada | (Montagne) Kützing | Sp. Alg.: | 419 | 1849 |
| Cladophora patentiramea | (Montagne) Kützing | Species algarum: | 416 | 1849 |
| Cladophora radians | Kützing | Sp. Alg.: | 418 | 1849 |
| Cladophora scitula | (Suhr) Kützing | Species algarum: | 399 | 1849 |
| Cladophora socialis | Kützing | Species algarum: | 416 | 1849 |
| Cladophora spinescens | Kützing | Sp. Alg.: | 418 | 1849 |
| Cladophora stricta | Kützing | Sp. Alg.: | 389 | 1849 |
| Cladophora subsimplex | Kützing | Species algarum: | 411 | 1849 |
| Cladophora valonioides | (Sonder) Kützing | Species algarum: | 391 | 1849 |
| Cladophora vaucheriiformis ('vaucheriaeformis') | Kützing | Sp. Alg.: | 389 | 1849 |
| Cladophora viridula | Kützing | Species algarum: | 403 | 1849 |
| Cladophora zollingeri | Kützing | Species algarum: | 415 | 1849 |
| Cocconeis britannica | Nägeli ex Kützing | Sp. Alg.: | 890 | 1849 |
| Codium tomentosum var. tenue | Kützing | Species algarum: | 501 | 1849 |
| Coleochaete pulvinata | A. Braun ex Kützing | Sp. Alg.: | 425 | 1849 |
| Colletonema viridulum | Brébisson ex Kützing | Sp. Alg.: | 105 | 1849 |
| Conferva affinis var. abbreviata | Kützing | Sp. Alg.: | 371 | 1849 |
| Conferva affinis var. tenella | Kützing | Sp. Alg.: | 371 | 1849 |
| Corallina berteroi ('berterii') | Montagne ex Kützing | Species algarum: | 709 | 1849 |
| Corallina filicula var. ramosissima | Kützing | Sp. Alg.: | 707 | 1849 |
| Corallina plumifera | Kützing | Species algarum: | 705 | 1849 |
| Corallocephalus arbuscula | (Montagne) Kützing | Sp. alg.: | 506 | 1849 |
| Corallopsis salicornia var. simplicior | (C. Agardh) Kützing | Species algarum: | 785 | 1849 |
| Cosmarium integerrimum | Kützing | Species algarum: | 174 | 1849 |
| Cryptopleura bonnemaisonii_(`bonnemaisoni') | (C. Agardh) Kützing | Sp. Alg.: | 871 | 1849 |
| Cryptopleura lacerata var. ciliifera | Kützing | Sp. Alg.: | 870 | 1849 |
| Cutleria compressa | Kützing | Species algarum: | 559 | 1849 |
| Cyclotella actinocyclus | (Ehrenberg) Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella americana | (Ehrenberg) Kützing | Sp. Alg.: | 19 | 1849 |
| Cyclotella astraea | (Ehrenberg) Kützing | Sp. Alg.: | 19 | 1849 |
| Cyclotella comta | Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella coscinodiscus | Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella denticulata | (Ehrenberg) Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella dives | (Ehrenberg) Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella mammilla | Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella operculata var. rectangula | Kützing | Sp. Alg.: | 19 | 1849 |
| Cyclotella peruana | (Ehrenberg) Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella physoplea | Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella picta | Kützing | Sp. Alg.: | 20 | 1849 |
| Cyclotella rectangula | Brébisson in Kützing | Sp. Alg.: | 19 | 1849 |
| Cyclotella rota | (Ehrenberg) Kützing | Sp. Alg.: | 19 | 1849 |
| Cyclotella rotula | (Ehrenberg) Kützing | Sp. Alg.: | 19 | 1849 |
| Cyclotella undata | (Ehrenberg) Kützing | Sp. Alg.: | 20 | 1849 |
| Cymbella delicatula | Kützing | Sp. Alg. | 59 | 1849 |
| Cystoclonium filiforme | (Sonder) Kützing | Sp. Alg.: | 757 | 1849 |
| Cystoclonium pumilum | (Greville) Kützing | Sp. Alg.: | 757 | 1849 |
| Diatoma gracillima ('gracillimum') | Nägeli ex Kützing | Sp. alg.: | 889 | 1849 |
| Dictyota acuminata | Kützing | Species algarum: | 555 | 1849 |
| Ectocarpus approximatus | Kützing | Species algarum: | 452 | 1849 |
| Ectocarpus bombycinus | Kützing | Species algarum: | 456 | 1849 |
| Ectocarpus capensis | Kützing | Species algarum: | 451 | 1849 |
| Ectocarpus ceratoides | Kützing | Species algarum: | 452 | 1849 |
| Ectocarpus onustus | Kützing | Sp. alg.: | 457 | 1849 |
| Ectocarpus parvulus | Kützing | Species algarum: | 457 | 1849 |
| Encoelium vesicatum | (Harvey) Kützing | Species algarum: | 552 | 1849 |
| Encyonema cespitosum | Kützing | Sp. Alg.: | 61 | 1849 |
| Enteromorpha acanthophora | Kützing | Sp. Alg.: | 479 | 1849 |
| Enteromorpha complanata var. abbreviata | (Kützing) Kützing | Sp. Alg.: | 481 | 1849 |
| Enteromorpha complanata var. ramellosa | Kützing | Sp. Alg.: | 481 | 1849 |
| Enteromorpha compressa var. novae-hollandiae | Kützing | Sp. Alg.: | 480 | 1849 |
| Enteromorpha corniculata | Kützing | Sp. Alg.: | 480 | 1849 |
| Enteromorpha gelatinosa | Kützing | Sp. Alg.: | 482 | 1849 |
| Enteromorpha hookeriana | Kützing | Sp. Alg.: | 480 | 1849 |
| Enteromorpha intestinalis var. spermatoidea | Kützing | Sp. Alg.: | 478 | 1849 |
| Enteromorpha minima | Nägeli ex Kützing | Sp. Alg.: | 482 | 1849 |
| Enteromorpha ramellosa | Kützing | Sp. Alg.: | 481 | 1849 |
| Epineuron fraxinifolium | (Mertens ex Turner) Harvey ex Kützing | Species algarum: | 849 | 1849 |
| Epymenia obtusa | (Greville) Kützing | Species algarum: | 787 | 1849 |
| Euactis rufescens | Nägeli ex Kützing | Sp. alg.: | 342 | 1849 |
| Euastrum sinuosum | Kützing | Sp. Alg.: | 174 | 1849 |
| Euctenodus australis | (Sonder) Kützing | Species algarum: | 770 | 1849 |
| Euctenodus echinatus | Kützing | Species algarum: | 770 | 1849 |
| Euctenodus labillardierei ('labillardieri') | (Mertens ex Turner) Kützing | Species algarum: | 770 | 1849 |
| Euhymenia capensis | Kützing | Species algarum: | 742 | 1849 |
| Euhymenia limensis | Kützing | Sp. Alg.: | 743 | 1849 |
| Euhymenia luxurians | (C. Agardh) Kützing | Sp. Alg.: | 742 | 1849 |
| Euhymenia reptans | (Suhr) Kützing | Species algarum: | 742 | 1849 |
| Eunotia flexuosa | (Brébisson ex Kützing) Kützing | Sp. Alg.: | 6 | 1849 |
| Eunotia pachycephala | Kützing | Sp. Alg.: | 6 | 1849 |
| Eupogonium callithamnium ('Callithamnion') | (Sonder) Kützing | Species algarum: | 799 | 1849 |
| Eupogonium pallidum | (Sonder) Kützing | Species algarum: | 799 | 1849 |
| Euptilota coralloidea | (J. Agardh) Kützing | Species algarum: | 672 | 1849 |
| Euptilota pappeana | Kützing | Sp. Alg.: | 671 | 1849 |
| Exilaria flexa | Brébisson in Kützing | Sp. Alg.: | 6 | 1849 |
| Frustulia pelliculosa | Brébisson in Kützing | Sp. Alg.: | 40 | 1849 |
| Galaxaura canaliculata | (Kützing) Kützing | Species algarum: | 530 | 1849 |
| Gastroclonium chiajeanum | (Meneghini) Kützing | Sp. Alg.: | 866 | 1849 |
| Gastroclonium obovatum | (C. Agardh) Kützing | Species algarum: | 865 (excluding material at hand; see Botryocladia sonderi) | 1849 |
| Gastroclonium opuntia | (Endlicher) Kützing | Species algarum: | 866 | 1849 |
| Gastroclonium reflexum | (Chauvin) Kützing | Species algarum: | 866 | 1849 |
| Gelidium intricatum | (C. Agardh) Kützing | Species algarum: | 767 | 1849 |
| Gelidium miniatum | (Sprengel) Kützing | Sp. Alg.: | 767 | 1849 |
| Gelidium radicans | (Bory de Saint-Vincent) Kützing | Species algarum: | 767 | 1849 |
| Gloeocapsa gelatinosa var. aeruginea | Kützing | Sp. alg.: | 219 (descr. in Tab. phycol. 1: 16, pl. 20: fig. VI.b) | 1849 |
| Gloeocapsa ianthina | Nägeli ex Kützing | Sp. alg.: | 220 | 1849 |
| Gloeocapsa kuetzingiana | Nägeli ex Kützing | Sp. alg.: | 224 | 1849 |
| Gloeocapsa opaca | Kützing | Sp. alg.: | 221 | 1849 |
| Gloeocapsa opaca var. pellucida | Kützing | Sp. alg.: | 221 | 1849 |
| Gloeocapsa versicolor | Nägeli ex Kützing | Sp. alg.: | 220 | 1849 |
| Gomphonema parvulum | Kützing | Sp. Alg.: | 65 | 1849 |
| Gongroceras australe | (Sonder) Kützing | Species algarum: | 679 | 1849 |
| Gongroceras nodiferum | Kützing | Species algarum: | 678 | 1849 |
| Griffithsia corallina var. tasmanica | Kützing | Species algarum: | 659 | 1849 |
| Gymnophlaea canariensis | Kützing | Sp. alg.: | 712 | 1849 |
| Gymnophlaea prismatica | (J. Agardh) Kützing | Species algarum: | 711 | 1849 |
| Halochloa serratifolia var. longifolia | Kützing | Sp. alg.: | 633 | 1849 |
| Halymenia carnosa var. dentata | (Suhr) Kützing | Species algarum: | 718 | 1849 |
| Halymenia elongata | Kützing | Sp. Alg.: | 718 | 1849 |
| Halymenia ulvoidea | (Sonder) Kützing | Species algarum: | 718 | 1849 |
| Heterocladia prolifera | Decaisne ex Kützing | Species algarum: | 879 | 1849 |
| Homoeocladia penicillata | Kützing | Sp. Alg.: | 97 | 1849 |
| Hormoceras variegatum | Kützing | Species algarum: | 676 | 1849 |
| Hormotrichum viridifuscum | (Montagne) Kützing | Species algarum: | 382 | 1849 |
| Hydrocoleum lyngbyaceum | Kützing | Species algarum: | 259 | 1849 |
| Hydrocoleum lyngbyaceum var. rupestre | Kützing | Species algarum: | 259 | 1849 |
| Hypnea ceramioides | Kützing | Species algarum: | 759 | 1849 |
| Hypnea fruticulosa | Kützing | Species algarum: | 760 | 1849 |
| Hypnea harveyi | Kützing | Species algarum: | 760 | 1849 |
| Hypoglossum crassinervium | (Montagne) Kützing | Sp. alg.: | 876 | 1849 |
| Hypoglossum leprieurii | (Montagne) Kützing | Species algarum: | 875 | 1849 |
| Hypoglossum serratum | (Postels & Ruprecht) Kützing | Species algarum: | 876 | 1849 |
| Hypoglossum spathulatum | (Sonder) Kützing | Species algarum: | 877 | 1849 |
| Iridaea carnosa | (J. Agardh) Kützing | Species algarum: | 729 | 1849 |
| Iridaea lapathifolia | Kützing | Sp. alg.: | 729 | 1849 |
| Jania cubensis | Montagne ex Kützing | Species algarum: | 709 | 1849 |
| Laminaria saccharina var. angustifolia | (Postels & Ruprecht) Kützing | Sp. Alg.: | 574 | 1849 |
| Laurencia complanata | (Suhr) Kützing | Species algarum: | 857 | 1849 |
| Laurencia elata var. californica | Kützing | Sp. Alg.: | 856 | 1849 |
| Laurencia flexuosa | Kützing | Species algarum: | 856 | 1849 |
| Laurencia glandulifera | (Kützing) Kützing | Species algarum: | 855 | 1849 |
| Laurencia glomerata | (Kützing) Kützing | Species algarum: | 857 | 1849 |
| Laurencia paniculata | Kützing | Sp. alg.: | 855 | 1849 |
| Laurencia patentiramea | (Montagne) Kützing | Species algarum: | 854 | 1849 |
| Laurencia pyramidalis | Bory ex Kützing | Sp. Alg.: | 854 | 1849 |
| Laurencia usneoides | (C. Agardh) Kützing | Sp. Alg.: | 852 | 1849 |
| Leibleinia corallinae | Kützing | Species algarum: | 276 | 1849 |
| Leptothrix lurida | Kützing | Sp. Alg. | 264 | 1849 |
| Leptothrix mamillosa | Meneghini in Kützing | Species algarum: | 264 | 1849 |
| Lomentaria fasciata | (Meneghini) Kützing | Species algarum: | 862 | 1849 |
| Lomentaria novae-zelandiae ('Novae-Zeelandiae') | (J. Hooker & Harvey) Kützing | Species algarum: | 863 | 1849 |
| Lomentaria tasmanica | (Harvey) Kützing | Species algarum: | 864 | 1849 |
| Lophura preissii | (Sonder) Kützing | Species algarum: | 850 | 1849 |
| Lyngbya aeruginosa var. ferruginea | (C. Agardh) Kützing | Sp. Alg.: | 282 | 1849 |
| Lyngbya cinerascens | Kützing | Species algarum: | 281 | 1849 |
| Lyngbya prasina | Montagne ex Kützing | Species algarum: | 284 | 1849 |
| Mastocarpus polycarpus | Kützing | Species algarum: | 733 | 1849 |
| Mastophora laevis | (Kützing) Kützing | Sp. Alg.: | 696 | 1849 |
| Mastophora stelligera | (Endlicher & Diesing) Kützing | Species algarum: | 697 | 1849 |
| Melobesia pustulata var. canellata | Kützing | Species algarum: | 696 | 1849 |
| Melosira dickiei ('Dickieii') | (Thwaites) Kützing | Sp. Alg.: | 889 | 1849 |
| Merismopedia elegans | A. Braun ex Kützing | Species algarum: | 472 | 1849 |
| Microdictyon calodictyon | (Montagne) Kützing | Species algarum: | 512 | 1849 |
| Monactinus ovatus | (Ehrenberg) Kützing | Sp. Alg.: | 194 | 1849 |
| Monactinus triangulum | (Ehrenberg) Kützing | Sp. Alg.: | 194 | 1849 |
| Myriodesma angustifolium | (Sonder) Kützing | Species algarum: | 588 | 1849 |
| Myriodesma quercifolium | (R. Brown ex Turner) Kützing | Species algarum: | 588 | 1849 |
| Myrionema ocellatum | (Kützing) Kützing | Sp. Alg.: | 540 | 1849 |
| NEUROCAULON | Zanardini ex Kützing | Species algarum: | 744 | 1849 |
| Navicula aestuarii | Brébisson ex Kützing | Sp. Alg.: | 890 | 1849 |
| Navicula pygmaea | Kützing | Spec. Alg.: | 77 | 1849 |
| Navicula subtilis | Brébisson ex Kützing | Sp. Alg.: | 87 | 1849 |
| Navicula tumida | Brébisson ex Kützing | Spec. Alg.: | 77 | 1849 |
| Neurocaulon foliosum | (Meneghini) Zanardini ex Kützing | Species algarum: | 744 | 1849 |
| Odontella rhombus | (Ehrenberg) Kützing | Sp. Alg.: | 136 | 1849 |
| Odontidium polyedra ('polyedrum') | (Ehrenberg) Kützing | Spec. alg.: | 14 | 1849 |
| Oscillaria antliaria var. purpureo-coerulea | Kützing | Sp. Alg.: | 241 | 1849 |
| PHYCASTRUM | Kützing | Sp. Alg.: | 178 | 1849 |
| Palmella parietina | (Nägeli) Nägeli in Kützing | Sp. alg.: | 212 | 1849 |
| Palmogloea closteridia | Kützing | Sp. alg.: | 228 | 1849 |
| Pediastrum biradiatum var. rotula | Kützing | Sp. Alg.: | 193 | 1849 |
| Pediastrum biradiatum var. tetras | (Ehrenberg) Kützing | Sp. Alg.: | 193 | 1849 |
| Penium lamellosum | Brébisson ex Kützing | Sp. alg.: | 168 | 1849 |
| Phlebothamnion gaillonii ('gallioni') | (P. Crouan & H. Crouan) Kützing | Sp. Alg.: | 654 | 1849 |
| Phlebothamnion implicatum | Kützing | Sp. alg.: | 653 | 1849 |
| Phlebothamnion purpuriferum | Kützing | Species algarum: | 656 | 1849 |
| Phycastrum granulosum | (Ralfs) Kützing | Sp. Alg.: | 180 | 1849 |
| Phycopteris harveyana | Pappe ex Kützing | Sp. Alg.: | 564 | 1849 |
| Phycopteris interrupta | Kützing | Species algarum: | 564 | 1849 |
| Phycoseris gigantea var. perforata | Kützing | Species algarum: | 476 | 1849 |
| Phycoseris reticulata | (Forsskål) Kützing | Species algarum: | 478 | 1849 |
| Phycoseris uncialis | Kützing | Species algarum: | 475 | 1849 |
| Phyllerpa prolifera | (Forsskål) Kützing | Sp. Alg.: | 494 | 1849 |
| Phyllitis debilis | Kützing | Sp. Alg.: | 567 | 1849 |
| Physactis bullata | (A.P. de Candolle) Kützing | Sp. Alg.: | 332 | 1849 |
| Plocamium affine | Kützing | Species algarum: | 884 | 1849 |
| Plocamium suhrii | Kützing | Species algarum: | 886 | 1849 |
| Plocamium telfairiae | (W. Hooker & Harvey) Harvey ex Kützing | Species algarum: | 885 | 1849 |
| Polycladia commersonii | Montagne in Kützing | Species algarum: | 769 | 1849 |
| Polysiphonia moritziana | Sonder ex Kützing | Species algarum: | 838 | 1849 |
| Polysiphonia nana | Kützing | Species algarum: | 897 | 1849 |
| Polysiphonia polyphora | Kützing | Sp. Alg.: | 837 | 1849 |
| Porphyra bangiiformis ('bangiaeformis') | Kützing | Sp. Alg.: | 691 | 1849 |
| Porphyra reniformis | Meneghini in Kützing | Sp. Alg.: | 692. | 1849 |
| Ptilota pappeana | J. Agardh in Kützing | Sp. Alg.: | 671 | 1849 |
| Rhizoclonium ambiguum | (J. Hooker & Harvey) Kützing | Species algarum: | 387 | 1849 |
| Rhizoclonium antillarum | Kützing | Species algarum: | 384 | 1849 |
| Rhizoclonium lacustre var. velutinum | Kützing | Sp. Alg.: | 385 | 1849 |
| Rhizoclonium rivulare | (Kützing) Kützing | Sp. Alg.: | 386 | 1849 |
| Rhodophyllis capensis | Kützing | Species algarum: | 786 | 1849 |
| Rhodophyllis preissiana | (Sonder) Kützing | Sp. Alg.: | 786 | 1849 |
| Rytiphlaea corymbosa | Kützing | Species algarum: | 844 | 1849 |
| SPONDYLOSIUM | Brébisson ex Kützing | Sp. Alg.: | 189 | 1849 |
| Sargassum bacciferum var. spinuligerum | Kützing | Species algarum: | 610 | 1849 |
| Sargassum dichocarpum | Kützing | Species algarum: | 613 | 1849 |
| Sargassum herbaceum | Kützing | Species algarum: | 607 | 1849 |
| Sargassum persicum | Kützing | Species algarum: | 610 | 1849 |
| Sargassum pygmaeum | Kützing | Species algarum: | 611 | 1849 |
| Schizoglossum gmelinii_(`gmelini') | Kützing | Sp. Alg.: | 870 | 1849 |
| Schizogonium julianum | Meneghini in Kützing | Sp. Alg.: | 349 | 1849 |
| Schizogonium laetevirens var. crispum | Kützing | Sp. Alg.: | 351 | 1849 |
| Schizonema flavum | Kützing | Sp. alg.: | 101 | 1849 |
| Schizonema luteum | Kützing | Sp. alg.: | 102 | 1849 |
| Schizonema rutilans var. amplius | Kützing | Sp. Alg.: | 101 | 1849 |
| Schizosiphon parietinus | Nägeli ex Kützing | Species algarum: | 327 | 1849 |
| Sciadium arbuscula | A. Braun ex Kützing | Sp. Alg.: | 490 | 1849 |
| Scytonema crassum | Nägeli ex Kützing | Sp. Alg.: | 894 | 1849 |
| Scytonema notarisii | Meneghini in Kützing | Species algarum: | 307 | 1849 |
| Sirophysalis virgata | (Endlicher & Diesing) Kützing | Species algarum: | 603 | 1849 |
| Spatoglossum multipartitum | (Suhr) Kützing | Species algarum: | 560 | 1849 |
| Spatoglossum nigrescens | (Sonder) Kützing | Species algarum: | 561 | 1849 |
| Sphacelaria capensis | Kützing | Species algarum: | 464 | 1849 |
| Sphaerococcus australis | Kützing | Species algarum: | 784 | 1849 |
| Sphaerococcus australis var. constrictus | Kützing | Species algarum: | 784 | 1849 |
| Sphaerococcus cinnabarinus | (J. Agardh) Kützing | Species algarum: | 781 | 1849 |
| Sphaerococcus corticatus | (J. Agardh) Kützing | Species algarum: | 783 | 1849 |
| Sphaerococcus dactyloides | (Sonder) Kützing | Species algarum: | 776 | 1849 |
| Sphaerococcus heringii | Kützing | Species algarum: | 775 | 1849 |
| Sphaerococcus meneghinii | Kützing | Sp. Alg.: | 783 | 1849 |
| Sphaerococcus obtusatus | (Sonder) Kützing | Species algarum: | 784 | 1849 |
| Sphaerococcus rangiferinus | Kützing | Sp. Alg.: | 779 | 1849 |
| Sphaerococcus tripinnatus | (Hering) Kützing | Species algarum: | 783 | 1849 |
| Sphaerozyga catenula | Kützing | Sp. Alg.: | 893 | 1849 |
| Spirogyra gracilis | Kützing | Sp. alg.: | 438 | 1849 |
| Spirogyra grevilleana | (Hassall) Kützing | Sp. alg.: | 438 | 1849 |
| Spirogyra varians | (Hassall) Kützing | Sp. alg.: | 439 | 1849 |
| Spongites decussatus ('decussata') | (Ellis & Solander) Kützing | Sp. Alg.: | 698 | 1849 |
| Spongites incrustans | (Philippi) Kützing | Sp. Alg.: | 698 | 1849 |
| Spongonema tomentosum | (Hudson) Kützing | Sp. Alg. | 461 | 1849 |
| Spyridia cupressina | Kützing | Species algarum: | 668 | 1849 |
| Staurospermum agardhianum | (Wallman) Kützing | Sp. Alg.: | 437 | 1849 |
| Stigeoclonium plumosum | Kützing | Species algarum: | 356 | 1849 |
| Stigeoclonium subspinosum var. falklandicum | Kützing | Sp. Alg.: | 353 | 1849 |
| Stypocaulon funiculare | (Montagne) Kützing | Species algarum: | 467 | 1849 |
| Stypocaulon paniculatum | (Suhr) Kützing | Species algarum: | 467 | 1849 |
| Stypopodium atomarium var. ciliatum_(`ciliata') | (C. Agardh) Kützing | Sp. Alg.: | 564 | 1849 |
| Symploca hydnoides | (Harvey) Kützing | Species algarum: | 272 | 1849 |
| Synedra alpina | Nägeli ex Kützing | Sp. Alg.: | 43 | 1849 |
| Synedra arcuata | Nägeli ex Kützing | Sp. Alg.: | 890 | 1849 |
| Synedra falcata | Kützing & Brébisson in Kützing | Sp. Alg.: | 43 | 1849 |
| Synedra flexuosa var. angusta | Brébisson ex Kützing | Sp. Alg.: | 6 | 1849 |
| Synedra minutissima var. pelliculosa | Kützing | Sp. Alg.: | 40 | 1849 |
| Synedra subarcuata | Nägeli ex Kützing | Sp. Alg.: | 43 | 1849 |
| Thamnocarpus mertensii | (Greville) Kützing | Species algarum: | 887 | 1849 |
| Thamnoclonium hirsutum var. africanum | Kützing | Species algarum: | 794 | 1849 |
| Thorea americana var. natalensis | (Hering) Kützing | Species algarum: | 534 | 1849 |
| Trichoceras pallidum | Kützing | Sp. alg.: | 680 | 1849 |
| Trichoceras tasmanicum | Kützing | Species algarum: | 680 | 1849 |
| Ulothrix flaccida | Kützing | Sp. alg.: | 349 | 1849 |
| Ulothrix fragilis | Kützing | Sp. Alg.: | 349 | 1849 |
| Ulothrix implexa | (Kützing) Kützing | Sp. alg. | 349 | 1849 |
| Ulothrix nitens | Kützing | Sp. Alg.: | 349 | 1849 |
| Ulothrix radicans | Kützing | Sp. Alg.: | 349 | 1849 |
| Ulothrix rivularis | (Kützing) Kützing | Sp. Alg.: | 346 | 1849 |
| Vaucheria javanica | Kützing | Species algarum: | 487 | 1849 |
| Xanthidium antilopaeum | Kützing | Sp. alg.: | 177 | 1849 |
| Zonaria schimperi | Kützing | Sp. Alg.: | 565 | 1849 |