| Name | Author | Source | Citation | Year |
|---|
| Callithamnion hookeri | (Dillwyn) S. Gray | A natural arrangement of British plants ...: | 324 | 1821 |
| Callithamnion decipiens | J. Agardh | Alg. Medit.: | 70 | 1842 |
| Callithamnion lignator | Durant | Alg. New York: | 30 | 1850 |
| Callithamnion pinnatum_(`pinnata') | Durant | Alg. New York: | 31 | 1850 |
| Callithamnion microptilum | Grunow | Alg. Novara: | 59, pl. VI: fig. 2 | 1867 |
| Callithamnion pennula | Grunow | Alg. Novara: | 60, pl. VI: fig. 1 | 1867 |
| Callithamnion corallina | Ruprecht | Alg. Ochot.: | 149, 151 [Tange Ochotsk. Meer.: 341, 343], pl. 18: figs. n-q | 1850 |
| Callithamnion pusillum | Ruprecht | Alg. Ochot.: | 150, 151 [Tange Ochotsk. Meer.: 342, 343] | 1850 |
| Callithamnion subnudum | Ruprecht | Alg. Ochot.: | 148, 151 [Tange Ochotsk. Meer.: 340, 343], pl. 18: figs. k-m | 1850 |
| Callithamnion armatum | J. Agardh | Alg. Syst. | 4: 3 | 1885 |
| Callithamnion semipennatum | J. Agardh | Alg. medit.: | 72 | 1842 |
| Callithamnion varispirale_('varispiralis') | E.Y. Dawson | Allan Hancock Found. Occ. Pap. | 8: 16, figs. 29, 30, 54 | 1949 |
| Callithamnion rigidum | E.Y. Dawson | Allan Hancock Pac. Exped. | 26: 33, pl. 10: figs. 4, 5 | 1962 |
| Callithamnion uncinatum | E.Y. Dawson | Allan Hancock Pac. Exped. | 26: 35, pl. 11: fig. 4 | 1962 |
| Callithamnion epiphyticum | W.R. Taylor | Allan Hancock Pacific Exped. | 12: 260 | 1945 |
| Callithamnion catalinense | E.Y. Dawson | Allan Hancock Pacific Exped. | 26: 28, pl. 9: figs. 1, 2 | 1962 |
| Callithamnion ecuadoreanum | W.R. Taylor | Allan Hancock Pacific Exped. | 12: 259 | 1945 |
| Callithamnion bisporum var. australe | E.Y. Dawson | Allan Hancock Pacific Exped. | 26(1): 26, pl. 9: fig. 4 | 1962 |
| Callithamnion compactum | E.Y. Dawson | Allan Hancock Pacific Exped. | 26(1): 29, pl. 9: fig. 3 | 1962 |
| Callithamnion pacificum | W.R. Taylor | Allan Hancock Pacific Exped. | 12: 258 | 1945 |
| Callithamnion soccoriense | W.R. Taylor | Allan Hancock Pacific Exped. | 12: 258, pl. 86: fig. 2 | 1945 |
| Callithamnion veleroae | E.Y. Dawson | Allan Hancock Pacific Exped. | 3: 312, pl. 50: figs. 3-5 | 1944 |
| Callithamnion clandestinum | Montagne | Ann. Sci. Nat. Bot., ser. 2, | 8: 350 | 1837 |
| Callithamnion thouarsii | Montagne | Ann. Sci. Nat. Bot., ser. 2, | 8: 351 | 1837 |
| Callithamnion micropterum | (Montagne) Montagne | Ann. Sci. Nat. Bot., ser. 2, | 18: 261 | 1842 |
| Callithamnion arrawarricum | A.J.K. Millar | Austral. Syst. Bot. | 3: 403, fig. 47A-C | 1990 |
| Callithamnion korffense | A.J.K. Millar | Austral. Syst. Bot. | 3: 404, fig. 47D-H | 1990 |
| Callithamnion callithamnioides | (A.B. Joly & Y. Ugadim) M.J. Wynne | Beih. Nova Hedwigia | 129: 85 | 2005 |
| Callithamnion tenuissimum | (Bonnemaison) Zanardini | Bibliot. Ital. [Milano] | 99: 206 | 1840 |
| Callithamnion cordatum | Børgesen | Bot. Tidsskr. | 30: 10, figs. 5, 6 | 1909 |
| Callithamnion preissii | Sonder | Bot. Zeit. | 3: 52 | 1845 |
| Callithamnion ramellosum | Sonder | Bot. Zeit. | 3: 52 | 1845 |
| Callithamnion byssoides | Arnott ex Harvey in Hooker | Brit. Fl. | 2{1}: 342. | 1833 |
| Callithamnion fasciculatum | Harvey in W.J. Hooker | Brit. Fl. | 2{1}: 343 | 1833 |
| Callithamnion sparsum | Harvey in W.J. Hooker | Brit. Fl. | 2{1}: 348 | 1833 |
| Callithamnion pumilum | Harvey in W.J. Hooker | Brit. Fl. | 2{1}: 339 | 1833 |
| Callithamnion virgatulum | Harvey in Hooker | Brit. Fl. | 2{1}: 349 | 1833 |
| Callithamnion sepositum | (Gunnerus) P.S. Dixon & J.H. Price | Bull. Brit. Mus. (Nat. Hist.), Bot. | 9: 132 | 1981 |
| Callithamnion codii | P. Crouan & H. Crouan | Bull. Soc. Bot. France | 7: 368 | 1860 |
| Callithamnion felipponei | Howe | Bull. Torrey Bot. Club | 57: 609, pl. 37: fig. 3 | 1931 |
| Callithamnion neglectum | (Feldmann-Mazoyer) M.J. Wynne | Canad. J. Bot. | 64: 2260 | 1986 |
| Callithamnion neglectum | (Feldmann-Mazoyer) South & Tittley | Checkl. Benth. Mar. Alg. N. Atl. Ocean: | 50 | 1986 |
| Callithamnion exiguum | H. Stegenga, J.J. Bolton, & R.J. Anderson | Contr. Bolus Herb. | 18: 398, pl. 150 | 1997 |
| Callithamnion abietinum | Reinsch | Contrib. Alg. et Fung.: | 48, Rhodophyceae pl. XXIX: fig. 2 | 1875 |
| Callithamnion bebbii | Reinsch | Contrib. Alg. et Fung.: | 47, Rhodophyceae pl. XXVIII | 1875 |
| Callithamnion lasioides | Reinsch | Contrib. Alg. et Fung.: | 49, Rhodophyceae pl. XXII | 1875 |
| Callithamnion axirhizans | Reinsch | Contrib. Alg. et Fung.: | 46, Rhodophyceae pl. XXV | 1874/1875 |
| Callithamnion vieillardii_(`vieillardi') | Kützing | Diagn. u. Bemerk.: | 14 | 1863 |
| Callithamnion nemalii_('Nemalionis') | De Notaris ex Dufour | Erb. Critt. Ital. | 20: no. 952 | 1863 |
| Callithamnion lherminieri | P. Crouan & H. Crouan in Mazé & Schramm | Essai Class. Alg. Guadeloupe, ed. 2: | 144 | 1878 |
| Callithamnion investiens | P. Crouan & H. Crouan in Schramm & Mazé | Essai Class. Alg. Guadeloupe: | 7 | 1865 |
| Callithamnion pikeanum var. laxum | (Setchell & N.L. Gardner) Doty | Farlowia | 3: 191 | 1947 |
| Heterosiphonia callithamnium_('callithamnion') | (Sonder) Falkenberg | Fauna und Flora des Golfes von Neapel, Monographie | 26: 647 | 1901 |
| Callithamnion hirtum | J. Hooker & Harvey in J. Hooker | Fl. Antarct.: | 192: pl. LXXVIII: fig. II | 1845 |
| Callithamnion herveyi | Howe in N.L. Britton | Fl. Bermuda: | 528 | 1918 |
| Callithamnion lanceolatum | (Derbès) Bertoloni | Fl. Ital. Cryptog. | 2: 236 | 1862 |
| Callithamnion dasyoides | Zanardini ex Bertoloni | Fl. Ital. Cryptog. | 2: 234 | 1862 |
| Callithamnion dispar | Harvey in J. Hooker | Fl. Tasman. | 2: 335 | 1859 |
| Callithamnion fastigiatum | Harvey in J. Hooker | Fl. Tasman. | 2: 336 | 1859 |
| Callithamnion elongatum | Harvey in Hooker | Fl. Tasman. | 2: 336 | 1859 |
| Callithamnion paradoxum | Harvey in Hooker | Fl. Tasman. | 2: 337 | 1859 |
| Callithamnion violaceum | Harvey in Hooker | Fl. Tasman. | 2: 334 | 1859 |
| Callithamnion imbricatum | Schousboe ex Suhr | Flora | 23: 290 | 1840 |
| Callithamnion myurum | Suhr | Flora | 23: 282 | 1840 |
| Callithamnion constrictum | Hering in Krauss | Flora | 29: 212 | 1846 |
| Callithamnion cruciatum | C. Agardh | Flora | 10: 637 | 1827 |
| Callithamnion stuposum | Suhr | Flora | 23: 293 | 1840 |
| Callithamnion variegatum | Suhr | Flora | 23: 289 | 1840 |
| Callithamnion verticillatum | Suhr | Flora | 23: 290 | 1840 |
| Callithamnion sertularioides | Suhr | Flora | 23(18): 282 | 1840 |
| Callithamnion graniferum | Meneghini | Giorn. Bot. Ital. | Anno 1, tomo 1 (parte 1): 285 | 1844 |
| Callithamnion gallicum | (Nägeli) Sauvageau | J. Bot. [Morot] | 11: 310 | 1897 |
| Callithamnion callophyllidicola | Yamada | J. Fac. Sci. Hokkaido Univ., Ser. V (Bot.), | 2: 270, figs. 3a, 3b, pls. V, VI: fig. b | 1932 |
| Callithamnion floccosum var. pacificum | Harvey | J. Linn. Soc. [London], Bot. | 6: 176 | 1862 |
| Callithamnion subulatum | Harvey | J. Linn. Soc., London. Bot. | 6: 175 | 1862 |
| Callithamnion arbuscula var. pacificum | Harvey | J. Linn. Soc., London. Botany | 6: 175 | 1862 |
| Callithamnion graeffei | Grunow | J. Mus. Godeffroy [Hamburg] | 3: 29 | 1874 |
| Callithamnion membranaceum | Magnus | Jahresber. Komm. Wiss. Untersuch. Deutsch. Meere Kiel | 2: 67, pl. II: figs. 7-15 | 1874 |
| Callithamnion savianum | Meneghini | Lett. Corinaldi: | [2] | 1840 |
| Callithamnion ballioides | Sonder | Linnaea | 25: 674 | 1853 |
| Callithamnion australe | J. Agardh | Linnaea | 15: 42 | 1841 |
| Callithamnion cruciatum var. radicans | J. Agardh | Linnaea | 15: 44 | 1841 |
| Callithamnion hanovioides | Sonder | Linnaea | 25: 674 | 1853 |
| Callithamnion caudatum | J. Agardh | Linnaea | 15: 46 | 1841 |
| Callithamnion scoparium | J.D. Hooker & Harvey | Lond. J. Botany | 4: 273 | 1845 |
| Callithamnion latissimum | Harvey | London J. Bot. | 3: 452 | 1844 |
| Callithamnion ptilota | J. Hooker & Harvey | London J. Bot. | 4: 272 | 1845 |
| Callithamnion angustatum | J. Hooker & Harvey | London J. Bot. | 6: 412 | 1847 |
| Callithamnion adnatum | J. Agardh | Lunds Univ. A\*orsskr. 14, Afd. Math. och Naturv. | 4: 12 | 1878 |
| Callithamnion acutum | Kylin | Lunds Univ. A\*orsskr., N.F., Avd. 2, | 21{9}: 55, fig. 36d, 36e | 1925 |
| Callithamnion biseriatum | Kylin | Lunds Univ. A\*orsskr., N.F., Avd. 2, | 21{9}: 54, figs. 35, 36a-c | 1925 |
| Callithamnion caulescens | (J. Agardh) H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 241 | 1998 |
| Callithamnion circinnatum | H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 239, fig. 111 | 1998 |
| Callithamnion confertum | H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 246, fig. 115 | 1998 |
| Callithamnion obstipum | (R. Cowling, G.T. Kraft, & J.A. West) H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 237 | 1998 |
| Callithamnion propebyssoides | H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 250, fig. 117 | 1998 |
| Callithamnion shepherdii | H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 243, figs. 107E-C, 114 | 1998 |
| Callithamnion griffithsioides | (J. Agardh) H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 234 | 1998 |
| Callithamnion pinnatum | H.B.S. Womersley | Mar. Benth. Fl. S. Australia | 3C: 234 | 1998 |
| Callithamnion tingitanum | Schousboe ex Bornet | Mém. Soc. Natl. Sc. Nat. et Math. Cherbourg | 28: 329, no fig. | 1892 |
| Callithamnion oosumiense | (H. Itono) M. Kajimura | Mem. Fac. Sci. Shimane Univ. | 24: 58 | 1990 |
| Callithamnion collabens | (Rudolphi) L. McIvor & C. Maggs in McIvor et al. | Molecular Phylogenetics and Evolution | 23: 443 | 2002 |
| Callithamnion flabellatum | [A.C. Brown & N. Jarman] | Monogr. Biol. | 31: 1256 | 1978 |
| Callithamnion interruptum | (J.E. Smith) S.F. Gray | Nat. Arr. Brit. Pl. | 1: 386 | 1821 |
| Callithamnion purpurascens var. roseum_('rosea') | (Roth) S.F. Gray | Nat. Arr. Brit. Pl. | 1: 323 | 1821 |
| Callithamnion thuioides | (J.E. Smith) S.F. Gray | Nat. Arr. Brit. Pl. | 1: 323 | 1821 |
| Callithamnion turneri | (Mertens ex Roth) S.F. Gray | Nat. Arr. Brit. Pl. | 1: 325 | 1821 |
| Callithamnion floccosum | (O.F. Müller) S.F. Gray | Nat. Arr. Brit. Pl. | 1: 324 | 1821 |
| Callithamnion plumosum | S.F. Gray | Nat. Arr. Brit. Pl. | 1: 325 | 1821 |
| Callithamnion paschale | Børgesen in Skottsberg | Nat. Hist. Juan Fernandez | 2: 294, fig. 35 | 1924 |
| Callithamnion americanum | Harvey | Ner. Bor.-Amer. | 2: 238, pl. XXXVI.A | 1853 |
| Callithamnion pikeanum | Harvey | Ner. bor. -amer. | 2: 230 | 1853 |
| Callithamnion squarrulosum | Harvey | Ner. bor.-amer. | 2: 232 | 1853 |
| Callithamnion arnottii_(`arnotti') | Trevisan | Nomencl. Alg.: | 77 | 1845 |
| Callithamnion byssoides | (Goodenough & Woodward) Trevisan | Nomencl. Alg.: | 78 | 1845 |
| Callithamnion pylaisaeanum | Montagne in A. Athanasiadis | Opera Botanica | 128: 79 | 1996 |
| Callithamnion levringii | Lindauer | Pacific Sci. | 3: 350 | 1949 |
| Callithamnion uruguayense | W.R. Taylor | Pap. Michigan Acad. Sci. | 24: 150, pl. III: fig. 1, pl. VI: figs. 1-4, pl. VII: fig. 1 | 1939 |
| Callithamnion rupicola f. pygmaeum | Collins in Collins, Holden, & Setchell | Phyc. Bor.-Amer.: | 1797 | 1911 |
| Callithamnion byssoides var. jamaicense | F.S. Collins in Collins, Holden, & Setchell | Phyc. Bor.-Amer.: | 443 | 1898 |
| Callithamnion affine | Kützing | Phyc. gen.: | 371 | 1843 |
| Callithamnion verticillatum | (Lightfoot) Kützing | Phyc. gen.: | 373 | 1843 |
| Callithamnion formosum | Harvey | Phycol. Austral. | 5: pl. CCLXXXI | 1863 |
| Callithamnion plumigerum | Harvey | Phycol. Austral. | 5: pl. CCLXXXV | 1863 |
| Callithamnion brownianum var. majus | Harvey | Phycol. Austral. | 5: li | 1863 |
| Callithamnion dimorphum | Harvey | Phycol. Austral. | 5: liv | 1863 |
| Callithamnion licmophorum | Harvey | Phycol. Austral. | 2: pl. XC | 1859 |
| Callithamnion refractum | Kützing | Phycol. General.: | 373 | 1843 |
| Callithamnion byssaceum | Kützing | Phycol. General.: | 371 | 1843 |
| Callithamnion spinescens | Kützing | Phycol. General.: | 373 | 1843 |
| Callithamnion spinescens var. julaceum | Kützing | Phycol. General.: | 373 | 1843 |
| Callithamnion boergesenii | N.E. Aponte & D.L. Ballantine | Phycologia | 29: 192, figs. 1-9 | 1990 |
| Callithamnion halliae | F.S. Collins in Collins, Holden, & Setchell | Phycoth. Bor.-Amer.: | no. 698 | 1900 |
| Callithamnion africanum | H. Stegenga, M.M. Reddy, R.J. Anderson, & J.J. Bolton in Reddy et al. | Phytotaxa | 461: 142, figs. 1-5, S1 | 2020 |
| Callithamnion pluma var. micropterum | Montagne | Plant. cell. canar.: | 177, no fig. | 1841 |
| Callithamnion lejolisea | Farlow | Proc. Amer. Acad. Arts & Sc. | 12: 244, no fig. | 1877 |
| Callithamnion endovagum | Setchell & N.L. Gardner | Proc. Calif. Acad. Sci. IV | 12: 771, pl. 28: fig. 62 | 1924 |
| Callithamnion pectinatum | Montagne | Prodr. Gen. Sp. Phyc.: | 9 | 1842 |
| CALLITHAMNION sect. SEIROSPORA | (Harvey) Ardissone | R. Ist. Lombardo Sc. e Lett., Rend., ser. 2, | 34: 1023, 1038 | 1901 |
| Callithamnion seirospermum var. lanceolatum | (Derbès) Hauck | Rabenhorst's Krypt.-Fl. Deutschl., 2.Aufl., | 2: 86 | 1882 |
| Callithamnion seirospermum var. graniferum | (Meneghini) Hauck | Rabenhorst's Krypt.-Fl. Deutschl., 2.Aufl., | 2: 86 | 1882 |
| Baillouviana callithamnium_('callithamnion') | (Sonder) Kuntze | Rev. Gen. Pl. | 2: 885 | 1891 |
| Callithamnion byssoides var. caulescens | J. Agardh | Sp. Alg. | 3{1}: 39 | 1876 |
| Callithamnion caespitosum | J. Agardh | Sp. Alg. | 2: 18 | 1851 |
| Callithamnion confusum | J. Agardh | Sp. Alg. | 3{1}: 25 | 1876 |
| Callithamnion decompositum | J. Agardh | Sp. Alg. | 2: 45 | 1851 |
| Callithamnion gaillonii_(`gailloni') | (P. Crouan & H. Crouan) P. Crouan & H. Crouan in J. Agardh | Sp. Alg. | 2: 38 | 1851 |
| Callithamnion sphaericum | P. Crouan & H. Crouan ex J. Agardh | Sp. Alg. | 2: 20 | 1851 |
| Callithamnion variabile | C. Agardh | Sp. Alg. | 2: 163 | 1828 |
| Callithamnion aegagropilum | J. Agardh | Sp. Alg. | 3{1}: 11 | 1876 |
| Callithamnion crispellum | C. Agardh | Sp. Alg. | 2: 183 | 1828 |
| Callithamnion divergens | J. Agardh | Sp. Alg. | 3{1}: 19 | 1876 |
| Callithamnion elegans | Schousboe ex C. Agardh | Sp. Alg. | 2: 162 | 1828 |
| Callithamnion furcellariae | J. Agardh | Sp. Alg. | 2: 37 | 1851 |
| Callithamnion granulatum | (Ducluzeau) C. Agardh | Sp. Alg. | 2: 177 | 1828 |
| Callithamnion mucronatum | J. Agardh | Sp. Alg. | 2: 29 | 1851 |
| Callithamnion purpuriferum | (Kützing) J. Agardh | Sp. Alg. | 2: 59 | 1851 |
| Callithamnion tripinnatum | C. Agardh | Sp. Alg. | 2: 168 | 1828 |
| Callithamnion dasyoides | J. Agardh | Sp. Alg. | 3{1}: 31 | 1876 |
| Callithamnion dasyoides var. chilense | J. Agardh | Sp. Alg. | 3{1}: 31 | 1876 |
| Callithamnion dasyoides var. californicum | J. Agardh | Sp. Alg. | 3{1}: 31 | 1876 |
| Callithamnion lamourouxii | J. Agardh | Sp. Alg. | 2: 23 | 1851 |
| Callithamnion efflorescens | J. Agardh | Sp. Alg. | 2: 15 | 1851 |
| Callithamnion acrospermum | J. Agardh | Sp. Alg. | 2: 52 | 1851 |
| Callithamnion acanthophorum | Kützing | Sp. Alg.: | 647 | 1849 |
| Callithamnion humile | Kützing | Sp. Alg.: | 639 | 1849 |
| Callithamnion luxurians | J. Agardh ex Kützing | Sp. Alg.: | 639 | 1849 |
| Callithamnion heteromorphum | J. Agardh | Sp. alg. | 3{1}: 23 | 1876 |
| Callithamnion nodiferum | J. Agardh | Sp. alg. | 3{1}: 25 | 1876 |
| Callithamnion vancouverianum | J. Agardh | Sp. alg. | 3{1}: 30 | 1876 |
| Callithamnion flexuosum | (C. Agardh) C. Agardh | Sp. alg. | 2: 166 | 1828 |
| Callithamnion turneri var. variabile | (C. Agardh) J. Agardh | Sp. alg. | 2: 24 | 1851 |
| Callithamnion clavatum | Schousboe ex C. Agardh | Sp. alg. | 2: 180 | 1828 |
| Callithamnion implicatum | (Kützing) J. Agardh | Sp. alg. | 2: 50 | 1851 |
| Callithamnion secundatum | (Lyngbye) C. Agardh | Sp. alg. | 2: 187 | 1828 |
| Callithamnion scopulorum | C. Agardh | Sp. alg. | 2: 166 | 1828 |
| Callithamnion borreri var. subfastigatum | Kützing | Sp. alg.: | 643 | 1849 |
| Callithamnion cruciatum var. decipiens | (J. Agardh) Kützing | Sp. alg.: | 649 | 1849 |
| Callithamnion borreri var. elongatum | Kützing | Species algarum: | 643 | 1849 |
| Callithamnion microscopicum | Nägeli ex Kützing | Species algarum: | 640 | 1849 |
| Callithamnion pygmaeum | Kützing | Species algarum: | 640 | 1849 |
| Eupogonium callithamnium_('Callithamnion') | (Sonder) Kützing | Species algarum: | 799 | 1849 |
| Callithamnion compressum | (Kützing) De Toni | Sylloge algarum ... Vol. IV. Florideae. Sectio III: | 1334 | 1903 |
| Callithamnion dasyurum | Harvey | Syn. Cat. Austral. & Tasman. Alg.: | li | 1863 |
| Callithamnion minimum | Harvey | Syn. Cat. Austral. & Tasman. Alg.: | lv | 1863 |
| Callithamnion superbiens | Harvey | Syn. Cat. Austral. & Tasman. Alg.: | li | 1863 |
| Callithamnion subtilissimum | Kützing | Tab. Phyc. | 11: 19, pl. 59: fig. II | 1861 |
| Callithamnion cruciatum var. villosum | Kützing | Tab. Phycol. | 11: 28, pl. 87: fig. II | 1861 |
| Callithamnion corymbosum | (J.E. Smith) Lyngbye | Tent. Hydrophytol. Dan.: | 125 | 1819 |
| Callithamnion daviesii var. secundatum | Lyngbye | Tent. Hydrophytol. Dan.: | 129, pl. 41: figs. B4-B6 | 1819 |
| Callithamnion plumula | (Ellis) Lyngbye | Tent. Hydrophytol. Dan.: | 127 | 1819 |
| Callithamnion repens | (Dillwyn) Lyngbye | Tent. Hydrophytol. Dan.: | 128 | 1819 |
| Callithamnion rothii | (Turton) Lyngbye | Tent. Hydrophytol. Dan.: | 129 | 1819 |
| Callithamnion corallinum | Lyngbye | Tent. Hydrophytol. Dan.: | 126 | 1819 |
| Callithamnion daviesii_('Dawiesii') | (Dillwyn) Lyngbye | Tent.: | 129 | 1819 |
| Callithamnion lanuginosum | (Dillwyn) Lyngbye | Tent.: | 130 | 1819 |
| Callithamnion roseum | (Roth) Lyngbye | Tent.: | 126 | 1819 |
| Callithamnion conspicuum | (Sonder) 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 ... Part III. Flora Tasmaniae. Volume II. Monocotyledones and Acotyledones: | 335 | 1859 |
| Callithamnion aculeatum | Harvey | Trans. R. Irish Acad. | 22(Sci.): 560 | 1855 |
| Callithamnion laricinum | Harvey | Trans. R. Irish Acad. | 22(Sci.): 562 | 1855 |
| Callithamnion pusillum | Harvey | Trans. R. Irish Acad. | 22(Sci.): 562 | 1855 |
| Callithamnion thyrsigerum | Thwaites ex Harvey | Trans. R. Irish Acad. | 22(Sci.): 559 | 1855 |
| Callithamnion wollastonianum | Harvey | Trans. R. Irish Acad. | 22(Sci.): 561 | 1855 |
| Callithamnion brownianum | Harvey | Trans. R. Irish Acad. | 22(Science): 561 | 1855 |
| Callithamnion crispulum | Harvey | Trans. R. Irish Acad. | 22(Science): 562 | 1855 |
| Callithamnion cymosum | Harvey | Trans. R. Irish Acad. | 22(Science): 560 | 1855 |
| Callithamnion debile | Harvey | Trans. R. Irish Acad. | 22(Science): 563 | 1855 |
| Callithamnion flabelligerum | Harvey | Trans. R. Irish Acad. | 22(Science): 562 | 1855 |
| Callithamnion gracilentum | Harvey | Trans. R. Irish Acad. | 22(Science): 560 | 1855 |
| Callithamnion horizontale | Harvey | Trans. R. Irish Acad. | 22(Science): 560 | 1855 |
| Callithamnion multifidum | Harvey | Trans. R. Irish Acad. | 22(Science): 562 | 1855 |
| Callithamnion pulchellum | Harvey | Trans. R. Irish Acad. | 22(Science): 561 | 1855 |
| Callithamnion radicans | Harvey | Trans. R. Irish Acad. | 22(Science): 563 | 1855 |
| Callithamnion scopula | Harvey | Trans. R. Irish Acad. | 22(Science): 562 | 1855 |
| Callithamnion verticale | Harvey | Trans. R. Irish Acad. | 22(Science): 561 | 1855 |
| Dasya callithamnium_('Callithamnion') | (Sonder) Harvey | Trans. R. Irish Acad. | 22(Science): 543 | 1855 |
| Callithamnion botryocarpum | Harvey | Trans. Roy. Irish Acad. | 22(Science): 563 | 1855 |
| Callithamnion perpusillum | P.C. Silva in Silva, Basson, & Moe | Univ. Calif. Publ. Bot. | 79: 385 | 1996 |
| Callithamnion arborescens | N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 380, pl. 81: fig. 2; pl. 83. | 1927 |
| Callithamnion bisporum | N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 403, pl. 85 | 1927 |
| Callithamnion breviramosum | N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 403, pl. 84 | 1927 |
| Callithamnion californicum | N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 378, pl. 78: fig. 4 | 1927 |
| Callithamnion laxum | Setchell & N.L. Gardner in Gardner | Univ. Calif. Publ. Bot. | 13: 407, pl. 88 | 1927 |
| Callithamnion pikeanum var. pacificum | Setchell & N.L. Gardner in Gardner | Univ. Calif. Publ. Bot. | 13: 406, pl. 87: figs. 2-3 | 1927 |
| Callithamnion ramosissimum | N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 404, pl. 86 | 1927 |
| Callithamnion rupicola_('rupicolum') | C.L. Anderson | Zoe | 4: 360, figs. A, B | 1894 |
| Baillouviana callithamnium_('callithamnion') | (O.W. Sonder) C.E.O. Kuntze | image |
| CALLITHAMNION | Lyngbye | image |
| CALLITHAMNION | Lyngbye | image |
| CALLITHAMNION | Lyngbye | image |
| CALLITHAMNION | Lyngbye emend. Bory | image |
| CALLITHAMNION | | image |
| CALLITHAMNION | | image |
| CALLITHAMNION | | image |
| CALLITHAMNION | | image |
| CALLITHAMNION | | image |
| Callithamnion abbreviatum | Kützing | image |
| Callithamnion acanthophorum | Kützing | image |
| Callithamnion acuminatum | Schousboe | image |
| Callithamnion aegagropilae | Funk | image |
| Callithamnion affine | Harvey | image |
| Callithamnion affine | Kützing | image |
| Callithamnion agardhianum | Trevisan | image |
| Callithamnion aglaothamnioides | Itono | image |
| Callithamnion alternatum | Schousboe | image |
| Callithamnion alternatum | Schousboe mscr. | image |
| Callithamnion amentaceum | Crouan fr. | image |
| Callithamnion apicale_('apicalis') | Noda | image |
| Callithamnion apiculatum | Crouan fr. | image |
| Callithamnion apiculatum | Meneghini | image |
| Callithamnion applicitum | Harvey | image |
| Callithamnion arachnoideum | C. Agardh | image |
| Callithamnion arachnoideum | D. Moore | image |
| Callithamnion arborescens | Gardner | image |
| Callithamnion arbuscula | (Brown ex Dillwyn) Lyngbye | image |
| Callithamnion arbuscula var. pacificum | W.H. Harvey (cont.) | image |
| Callithamnion arbuscula var. pacificum | W.H. Harvey | image |
| Callithamnion arnottii_('arnotti') | Trevisan | image |
| Callithamnion attenuatum | (C. Agardh) Rabenhorst | image |
| Callithamnion axillare | Schousboe | image |
| Callithamnion baccatum | J. Agardh | image |
| Callithamnion baileyi | Harvey | image |
| Callithamnion baileyi | Harvey | image |
| Callithamnion baileyi var. boreale | Harvey | image |
| Callithamnion baileyi var. laxum_('laxa') | Farlow | image |
| Callithamnion baileyi var. rochei | Harvey | image |
| Callithamnion baileyi var. squarrosum | Harvey | image |
| Callithamnion barbatum | C. Agardh | image |
| Callithamnion batrachospermum | Kützing | image |
| Callithamnion beaui_('beauii') | Crouan fr. | image |
| Callithamnion bipinnatum | Crouan frat. | image |
| Callithamnion bisporum | Gardner | image |
| Callithamnion bisporum var. australe | Dawson | image |
| Callithamnion borreri | (J.E. Smith) C. Agardh | image |
| Callithamnion borreri | (J.E. Smith) S.F. Gray | image |
| Callithamnion borreri var. calcaratum | J. Agardh | image |
| Callithamnion borreri var. elongatum | Kützing | image |
| Callithamnion borreri var. flabellatum | Kützing | image |
| Callithamnion borreri var. rigidum | Kützing | image |
| Callithamnion borreri var. subfastigatum | Kützing | image |
| Callithamnion botryticum | De Notaris | image |
| Callithamnion botryticum | De Notaris | image |
| Callithamnion brachiatum | (Bonnemaison) Lenormand ex Harvey | image |
| Callithamnion brachiatum | Schousboe | image |
| Callithamnion brachygonum | Harvey | image |
| Callithamnion breviramosum | Gardner | image |
| Callithamnion brodiei_('brodiaei') | Harvey | image |
| Callithamnion byssoides | (cont.) | image |
| Callithamnion byssoides | (Ducluzeau) Trevisan | image |
| Callithamnion byssoides f. seirosporiferum_('seirosporifera') | Holmes & Batters | image |
| Callithamnion byssoides var. arachnoideum | (C. Agardh) J. Agardh | image |
| Callithamnion byssoides var. fastigiatum | Harvey | image |
| Callithamnion byssoides var. flagellare | (Zanardini) Hauck | image |
| Callithamnion byssoides var. jamaicense_('jamaicensis') | Collins | image |
| Callithamnion byssoides var. jamaicense_('jamaicensis') | Collins | image |
| Callithamnion byssoides var. pseudobyssoides | (Crouan) Miranda | image |
| Callithamnion cabellae | De Notaris | image |
| Callithamnion calcaratum | De Notaris | image |
| Callithamnion calcaratum | De Notaris | image |
| Callithamnion calcaratum | Rudolphi | image |
| Callithamnion californicum | Gardner | image |
| Callithamnion catalinense | Dawson | image |
| Callithamnion centprenum | Sonder | image |
| Callithamnion ceramicola | (Lyngbye) Suhr | image |
| Callithamnion ceramicola | Kützing | image |
| Callithamnion ceramicola | Suhr | image |
| Callithamnion chadefaudii | (L'Hardy-Halos) South & Tittley | image |
| Callithamnion cladodermum | Zanardini | image |
| Callithamnion cladodermum | Zanardini | image |
| Callithamnion clavatum | Schousboe | image |
| Callithamnion clavellatum | Kützing | image |
| Callithamnion coccineum | (Hudson) Lyngbye | image |
| Callithamnion coccineum | Schousboe | image |
| Callithamnion codicola | Grunow | image |
| Callithamnion codii | Crouan frat. | image |
| Callithamnion colensoi | Harvey | image |
| Callithamnion comosum | Harvey | image |
| Callithamnion comosum | Kützing | image |
| Callithamnion compactum | Dawson | image |
| Callithamnion compactum | Schousboe | image |
| Callithamnion condensatum | Kützing | image |
| Callithamnion consanguineum | Harvey | image |
| Callithamnion corallina | Ruprecht | image |
| Callithamnion corallinum | (J. Murray) Lyngbye | image |
| Callithamnion cordatum | Børgesen | image |
| Callithamnion corniculifructum | Crouan fr. | image |
| Callithamnion corymbiferum | (Kützing) Trevisan | image |
| Callithamnion corymbosum f. laxum_('laxa') | Schiffner | image |
| Callithamnion corymbosum f. monosporum_('monospora') | Askenasy | image |
| Callithamnion corymbosum var. amphicarpum_('amphicarpa') | Thuret | image |
| Callithamnion corymbosum var. australe_('australis') | Askenasy | image |
| Callithamnion corymbosum var. byssoides | Crouan frat. | image |
| Callithamnion corymbosum var. corymbiferum | (Kützing) Adissone | image |
| Callithamnion corymbosum var. heterocarpum | Thuret | image |
| Callithamnion corymbosum var. intricatum | Lyngbye | image |
| Callithamnion corymbosum var. secundatum | Harvey | image |
| Callithamnion corymbosum var. seirospermum | Falkenberg | image |
| Callithamnion corynosporoides | Crouan ft. | image |
| Callithamnion crinale | J. Agardh | image |
| Callithamnion crinale | J. Agardh | image |
| Callithamnion crispellum | C. Agardh (cont.) | image |
| Callithamnion crouanii | Kützing illeg. | image |
| Callithamnion crouanioides | Kützing | image |
| Callithamnion cruciatum var. decipiens | (J. Agardh) Kützing | image |
| Callithamnion cruciatum var. dubium | (Zanardini) Zanardini | image |
| Callithamnion cruciatum var. majus | J. Agardh | image |
| Callithamnion cruciatum var. pumilum | (Harvey) Harvey | image |
| Callithamnion cruciatum var. tenue | Harvey | image |
| Callithamnion cruciatum var. villosum | Kützing | image |
| Callithamnion crustatum | Schousboe | image |
| Callithamnion cryptopterum | Kützing | image |
| Callithamnion cupressoides | Meneghini | image |
| Callithamnion cystosirarum | Ardissone | image |
| Callithamnion dasycladum | J. Agardh | image |
| Callithamnion dasyoides | J. Agardh | image |
| Callithamnion dasytrichum | (Montagne) Montagne | image |
| Callithamnion decipiens | J. Agardh | image |
| Callithamnion decussatum | Meneghini | image |
| Callithamnion delicatulum | Harvey | image |
| Callithamnion densum | Suhr | image |
| Callithamnion dietziae | Hooper ex Harvey | image |
| Callithamnion dimorphum | Harvey nom. superfl. | image |
| Callithamnion distichum | Zanardini | image |
| Callithamnion divaricatum | (Kützing) Trevisan | image |
| Callithamnion dubium | Zanardini | image |
| Callithamnion dudresnayi | (Bonnemaison) Crouan frat. | image |
| Callithamnion echigoense | Noda | image |
| Callithamnion elegans | Kützing | image |
| Callithamnion elegans | Vidovich | image |
| Callithamnion ellipticum | Montagne | image |
| Callithamnion ellipticum var. majus_('major') | Crouan fr. | image |
| Callithamnion elongellum | Zanardini | image |
| Callithamnion elongellum | Zanardini | image |
| Callithamnion endovagum | Setchell & Gardner | image |
| Callithamnion entozoicum f. spongiorum | Reinsch | image |
| Callithamnion entozoicum | Reinsch | image |
| Callithamnion entozoicum var. giardi | Reinsch | image |
| Callithamnion epiphyticum | Taylor | image |
| Callithamnion exiguum | Rodríguez & Femenías | image |
| Callithamnion fallax | Crouan frat. | image |
| Callithamnion feldmannii | (Halos) South & Tittley | image |
| Callithamnion felipponei | M.A. Howe | image |
| Callithamnion felixii | (Gaillon ex Bonnemaison) J. Agardh | image |
| Callithamnion flabellatum | (Montagne) Montagne | image |
| Callithamnion flabellatum | A.C. Brown & N. Jarman | image |
| Callithamnion flabellatum | Schousboe | image |
| Callithamnion flabellatum | Schousboe mscr. | image |
| Callithamnion flabellatum | Schousboe mscr. | image |
| Callithamnion flaccidum | J. Hooker & Harvey | image |
| Callithamnion flaccidum var. alternifolium | J. Agardh | image |
| Callithamnion flaccidum var. alternifolium | J. Hooker & Harvey | image |
| Callithamnion flagellare | Zanardini | image |
| Callithamnion flagellare | Zanardini | image |
| Callithamnion flagelliferum | De Notaris | image |
| Callithamnion flagelliforme | De Notaris | image |
| Callithamnion floccosum | (Müller) C. Agardh | image |
| Callithamnion floccosum | (O.F. Müller) S.F. Gray | image |
| Callithamnion floccosum var. atlanticum | J. Agardh | image |
| Callithamnion floccosum var. pacificum | W.H. Harvey | image |
| Callithamnion floccosum var. pusillum_('pusilla') | (Lyngbye) J. Agardh . | image |
| Callithamnion floridulum | (Dillwyn) Lyngbye | image |
| Callithamnion floridulum | Schousboe | image |
| Callithamnion floridulum | Schousboe | image |
| Callithamnion fragilissimum | Zanardini | image |
| Callithamnion fruticulosum | (Roth) Lyngbye | image |
| Callithamnion fruticulosum | J. Agardh | image |
| Callithamnion fruticulosum | Schousboe ex C. Agardh | image |
| Callithamnion furcellariae f. hiemale_('hiemalis') | (Kjellman) Kylin | image |
| Callithamnion gaillonii_('gailloni') | (P. Crouan & H. Crouan) P. Crouan & H. Crouan | image |
| Callithamnion gaudichaudii | C. Agardh | image |
| Callithamnion giraudii | (Kützing) J. Agardh | image |
| Callithamnion giraudii | Solier mss. | image |
| Callithamnion gorgoneum | Montagne | image |
| Callithamnion gracile | J. Hooker & Harvey | image |
| Callithamnion gracillimum | J. Agardh | image |
| Callithamnion grande | J. Agardh | image |
| Callithamnion granulatum f. nanum_('nana') | Schiffner | image |
| Callithamnion grevillei_('Grevillii') | Harvey | image |
| Callithamnion griffithsiae | Harvey mss. | image |
| Callithamnion griffithsioides | Solier | image |
| Callithamnion griffithsioides | Sonder | image |
| Callithamnion hamelii_('Hameli') | Nasr | image |
| Callithamnion hannafordii_('hannafordi') | (Harvey) J. Agardh | image |
| Callithamnion hapalidii | Crouan frat. | image |
| Callithamnion harveyanum | J. Agardh | image |
| Callithamnion hemiphorum | J. Agardh | image |
| Callithamnion hemystachyon | Schousboe | image |
| Callithamnion herveyi | M.A. Howe | image |
| Callithamnion heteromorphum | J. Agardh mscr. | image |
| Callithamnion hiemale | Kjellman mscr. | image |
| Callithamnion hirtellum | Zanardini | image |
| Callithamnion hirtellum | Zanardini | image |
| Callithamnion hookeri | (Dillwyn) C. Agardh | image |
| Callithamnion hookeri | (Dillwyn) S.F. Gray | image |
| Callithamnion hookeri f. areschougii | Rosenvinge | image |
| Callithamnion hookeri f. typicum_('typica') | Kylin | image |
| Callithamnion hormocarpum | E.M. Holmes | image |
| Callithamnion horridulum | J. Agardh (cont.) | image |
| Callithamnion horridulum | J. Agardh | image |
| Callithamnion humile | Kützing | image |
| Callithamnion hypneae | Crouan fr. | image |
| Callithamnion imbricatum | Schousboe | image |
| Callithamnion imbricatum | Zanardini | image |
| Callithamnion implicatum | (Kützing) J. Agardh | image |
| Callithamnion implicatum | Suhr mscr. | image |
| Callithamnion inordinatum | Zanardini | image |
| Callithamnion inordinatum | Zanardini | image |
| Callithamnion intermedium | Harvey ms. | image |
| Callithamnion interruptum | (J.E. Smith) C. Agardh | image |
| Callithamnion interruptum var. setaceum | Kützing | image |
| Callithamnion intricatum | (C. Agardh) C. Agardh | image |
| Callithamnion investiens | Crouan fr. | image |
| Callithamnion irregulare | J. Agardh | image |
| Callithamnion japonicum | Noda | image |
| Callithamnion kirillianum | Zinova & Zaberzhinskaya | image |
| Callithamnion labradorense | Reinsch | image |
| Callithamnion lanceolatum | (Derbès) Bertoloni | image |
| Callithamnion languinosum, err. cit. | | image |
| Callithamnion lanosum | Harvey | image |
| Callithamnion lapponicum | Ruprecht | image |
| Callithamnion laterale | Schousboe | image |
| Callithamnion laxatum | Zanardini | image |
| Callithamnion laxum | Setchell & Gardner | image |
| Callithamnion lenormandii_('lenormandi') | Suhr | image |
| Callithamnion lenormandii_('Lenormandi') | Suhr ex Kützing | image |
| Callithamnion lepadicola | Welwitsch | image |
| Callithamnion leptocladum | Montagne | image |
| Callithamnion lherminieri | Crouan fr. | image |
| Callithamnion longinode | Harvey | image |
| Callithamnion luxurians | J. Agardh ex Kützing (cont.) | image |
| Callithamnion luxurians | J. Agardh ex Kützing | image |
| Callithamnion lyngbyei_('Lyngbyi') | Bory | image |
| Callithamnion macropterum | Meneghini ex Kützing | image |
| Callithamnion marshallense_('marshallensis') | Dawson | image |
| Callithamnion membranaceum | P. Magnus | image |
| Callithamnion mesarthrocarpum | Meneghini | image |
| Callithamnion mesocarpum | Carmichael | image |
| Callithamnion microdendron | Zanardini | image |
| Callithamnion micropterum | J. Hooker & Harvey | image |
| Callithamnion microscopicum | Nägeli ex Kützing | image |
| Callithamnion mildbraedii | Pilger | image |
| Callithamnion miniatum | (C. Agardh) Naccari | image |
| Callithamnion minutissimum | Suhr | image |
| Callithamnion minutissimum | Zanardini | image |
| Callithamnion minutissimum_('minutissima') | Yamada | image |
| Callithamnion minutum | Suhr | image |
| Callithamnion mirabile | (Suhr) Kützing | image |
| Callithamnion montagnei | J. Hooker | image |
| Callithamnion muelleri_('Mülleri') | Sonder | image |
| Callithamnion multifidum | (Hudson) Kützing | image |
| Callithamnion multifidum var. pilosum | Kützing | image |
| Callithamnion multifidum var. setosum | Kützing | image |
| Callithamnion mytili | Schousboe | image |
| Callithamnion mytili | Schousboe | image |
| Callithamnion myuroides | Zanardini | image |
| Callithamnion naccarianum | Rudolphi | image |
| Callithamnion nanum | Kützing | image |
| Callithamnion neglectum | (G. Feldmann) Ballesteros & Romero | image |
| Callithamnion neglectum | (G. Feldmann-Mazoyer) South & Tittley | image |
| Callithamnion nemalionis | De Notaris | image |
| Callithamnion nemalionis | De Notaris | image |
| Callithamnion nigrescens | J. Agardh | image |
| Callithamnion nipponicum | Noda | image |
| Callithamnion nodulosum | (C. Agardh) Kützing | image |
| Callithamnion nodulosum | Zanardini | image |
| Callithamnion octosporum | C. Agardh | image |
| Callithamnion oppositifolium | J. Agardh | image |
| Callithamnion orbignianum | Montagne | image |
| Callithamnion ovale | Schousboe | image |
| Callithamnion ovuligerum | Askenasy | image |
| Callithamnion pacificum | Taylor | image |
| Callithamnion pallens | Zanardini | image |
| Callithamnion pallens | Zanardini | image |
| Callithamnion paniculatum | Schousboe | image |
| Callithamnion parvulum | Crouan frat. | image |
| Callithamnion paschale | Børgesen | image |
| Callithamnion pectinatum | Schousboe | image |
| Callithamnion pedicellatum | (J.E. Smith) C. Agardh | image |
| Callithamnion pedicellatum | (J.E. Smith) S.F. Gray | image |
| Callithamnion pedicellatum | Itono | image |
| Callithamnion pedunculatum | Kützing | image |
| Callithamnion pedunculatum var. codicola | Grunow | image |
| Callithamnion pellucidum | (Harvey) Harvey | image |
| Callithamnion penicillatum | Harvey | image |
| Callithamnion peniculum | Zanardini | image |
| Callithamnion penna | Schousboe | image |
| Callithamnion penna | Schousboe | image |
| Callithamnion pennatum | Harvey mscr. | image |
| Callithamnion peregrinum | Kützing | image |
| Callithamnion peregrinum | Kützing | image |
| Callithamnion pikeanum var. laxum | (Setchell & Gardner) Doty | image |
| Callithamnion pikeanum var. pacificum | Setchell & Gardner (cont.) | image |
| Callithamnion pikeanum var. pacificum | Setchell & Gardner | image |
| Callithamnion piliferum | Kützing | image |
| Callithamnion pinastroides | Reinsch | image |
| Callithamnion pinastroides var. ramulosum | Reinsch | image |
| Callithamnion pinnatofurcatum_('pinnato-furcatum') | Kützing | image |
| Callithamnion planum | Montagne | image |
| Callithamnion pluma | (Dillwyn) C. Agardh | image |
| Callithamnion plumosum | Kützing | image |
| Callithamnion plumosum | S.F. Gray | image |
| Callithamnion plumosum | Schousboe | image |
| Callithamnion plumula f. crispum | J. Agardh | image |
| Callithamnion plumula f. investiens | J. Agardh | image |
| Callithamnion plumula f. plumula | J. Agardh | image |
| Callithamnion plumula | Schousboe | image |
| Callithamnion plumula var. crispum | (Ducluzeau) J. Agardh | image |
| Callithamnion plumula var. horridulum | J. Agardh | image |
| Callithamnion plumula var. macropterum | Meneghini | image |
| Callithamnion plumula var. plumula | J. Agardh | image |
| Callithamnion plumula var. pusillum_('pusilla') | Lyngbye | image |
| Callithamnion pollexfenii | W.H. Harvey | image |
| Callithamnion polyacanthum | Kützing | image |
| Callithamnion polyacanthum | Kützing | image |
| Callithamnion polyrhizum | Harvey | image |
| Callithamnion polyspermum | C. Agardh | image |
| Callithamnion polyspermum f. juvenile_('juvenilis') | J. Agardh | image |
| Callithamnion posidoniae | Zanardini | image |
| Callithamnion posidoniae | Zanardini | image |
| Callithamnion posidoniae | Zanardini | image |
| Callithamnion pseudobyssoides | Crouan frat. | image |
| Callithamnion pseudocorymbosum | Shperk | image |
| Callithamnion pteroton | Schousboe | image |
| Callithamnion ptilophora | Eaton mscr. | image |
| Callithamnion ptilota | J.D. Hooker & Harvey | image |
| Callithamnion pubes | C. Agardh | image |
| Callithamnion pulchellum | C. Agardh | image |
| Callithamnion pulchellum | Harvey | image |
| Callithamnion pulchellum | Schousboe | image |
| Callithamnion pulchellum | Schousboe | image |
| Callithamnion pulcherrimum | Crouan frat. | image |
| Callithamnion pulvinatum | Harvey probably mss. | image |
| Callithamnion puniceum | Harvey | image |
| Callithamnion purpurascens | (Hudson) "Sm." | image |
| Callithamnion purpurascens | (Hudson) S.F. Gray | image |
| Callithamnion purpurascens | Brodie mss. | image |
| Callithamnion purpureum | (Lightfoot) Harvey | image |
| Callithamnion purpuriferum | (Kützing) J. Agardh | image |
| Callithamnion purpuriferum | Harvey | image |
| Callithamnion purpuriferum | Harvey nom. subnudum (cont.) | image |
| Callithamnion purpuriferum | Harvey nom. subnudum | image |
| Callithamnion pusillum | Harvey | image |
| Callithamnion pusillum | Schousboe | image |
| Callithamnion pusillum | Schousboe mss. | image |
| Callithamnion pygmaeum | Kützing | image |
| Callithamnion pylaisaei | Montagne | image |
| Callithamnion pyramidatum | Liebmann | image |
| Callithamnion rabenhorstii | (Kützing) Crouan frat. | image |
| Callithamnion racemosum_('racemosa') | Suhr | image |
| Callithamnion ralfsii | Harvey ms. | image |
| Callithamnion ramellosum | Kützing | image |
| Callithamnion ramosissimum | Gardner | image |
| Callithamnion recurvatum | Schousboe | image |
| Callithamnion reductum | Baardseth | image |
| Callithamnion refractum | Kützing | image |
| Callithamnion repens var. tenellum | (Dillwyn) Lyngbye | image |
| Callithamnion rigescens | Zanardini | image |
| Callithamnion rigescens | Zanardini | image |
| Callithamnion rigidum | Dawson | image |
| Callithamnion roseolum | C. Agardh | image |
| Callithamnion roseum | Schousboe m.s. | image |
| Callithamnion roseum var. scopulorum | Lenormand | image |
| Callithamnion roseum var. tenue | Lyngbye | image |
| Callithamnion rothii var. purpureum | (Lightfoot) Harvey | image |
| Callithamnion rupicola_('rupicolum') f. pygmaeum | Collins | image |
| Callithamnion sandrianum | Zanardini | image |
| Callithamnion scoparium | J. Agardh | image |
| Callithamnion scoparium | J. Hooker & Harvey | image |
| Callithamnion scoparium var. ramulosum | J. Hooker & Harvey | image |
| Callithamnion secundatum var. botryosum | Montagne | image |
| Callithamnion seirospermum | (Harvey) Griffiths | image |
| Callithamnion seirospermum f. miniatum_('miniata') | Holmes & Batters | image |
| Callithamnion seirospermum f. trifarium_('trifaria') | Hauck | image |
| Callithamnion seirospermum f. versicolor | Holmes & Batters | image |
| Callithamnion seirospermum var. lanceolatum | (Derbès) Hauck | image |
| Callithamnion seirospermum var. miniatum | (Bonnemaison) Crouan frat. | image |
| Callithamnion semicorticatum | Baardseth | image |
| Callithamnion seminudum | C. Agardh | image |
| Callithamnion semipennatum var. tenuior | Kützing | image |
| Callithamnion semipinnatum_('semi-pinnatum') | Schousboe | image |
| Callithamnion sepositum | Tittley & Wilkinson | image |
| Callithamnion serpens | Crouan fr. | image |
| Callithamnion sessile | Meneghini | image |
| Callithamnion siculum | Ardissone | image |
| Callithamnion simile | J. Hooker & Harvey | image |
| Callithamnion simile | J. Hooker & Harvey | image |
| Callithamnion simplex | Crouan frat. | image |
| Callithamnion simpliciusculum | Suhr | image |
| Callithamnion soccoriense | Taylor | image |
| Callithamnion sphaericum | Crouan frat. | image |
| Callithamnion spinescens | Kützing | image |
| Callithamnion spinescens var. julaceum | Kützing | image |
| Callithamnion spiniferum | Kylin | image |
| Callithamnion spinosulum | Suhr | image |
| Callithamnion spinosum | Crouan frat. | image |
| Callithamnion spinosum | Harvey | image |
| Callithamnion spinuliferum | Ardissone | image |
| Callithamnion spinulosum | Kützing | image |
| Callithamnion spongiosum | Harvey | image |
| Callithamnion squarrosum | (Kützing) 'Harvey' | image |
| Callithamnion squarrosum | Harvey | image |
| Callithamnion striatulum | Suhr | image |
| Callithamnion strictum | C. Agardh | image |
| Callithamnion subsecundum | Grunow | image |
| Callithamnion subsimplex | Harvey | image |
| Callithamnion subsimplex | Harvey ex J. Agardh | image |
| Callithamnion subtile | Kützing | image |
| Callithamnion subtilissimum | Kützing | image |
| Callithamnion subtilissimum var. tongatense | Grunow | image |
| Callithamnion subtilissimum_('subtillissimum') | De Notaris | image |
| Callithamnion subulatum | W.H. Harvey | image |
| Callithamnion subverticillatum | Zanardini | image |
| Callithamnion subverticillatum | Zanardini | image |
| Callithamnion tenue | (C. Agardh) Harvey | image |
| Callithamnion tenuissimum var. pinnatofurcatum_('pinnato-furcatum') | (Kützing) Ardissone | image |
| Callithamnion ternifolium | J. Hooker & Harvey | image |
| Callithamnion tetracladum | J. Agardh | image |
| Callithamnion tetracladum | J. Agardh ms. | image |
| Callithamnion tetracladum | J. Agardh mscr. | image |
| Callithamnion tetragonum | (Stackhouse) C. Agardh | image |
| Callithamnion tetragonum | (Withering) S.F. Gray | image |
| Callithamnion tetragonum f. brachiatum_('brachiata') | ([Bonnemaison]) Miranda | image |
| Callithamnion tetragonum var. brachiatum | (Bonnemaison) Crouan frat. | image |
| Callithamnion tetragonum var. divaricatum_('divaricata') | Rosenvinge | image |
| Callithamnion tetragonum var. firmius | C. Agardh | image |
| Callithamnion tetragonum var. fruticulosum_('fruticulosa') | (J. Agardh) Rosenvinge | image |
| Callithamnion tetragonum var. genuinum | Hauck | image |
| Callithamnion tetragonum var. tetragonum | J. Agardh | image |
| Callithamnion tetricum | (Dillwyn) S.F. Gray | image |
| Callithamnion tetricum var. minus | C. Agardh | image |
| Callithamnion tetricum var. pectinatum | C. Agardh | image |
| Callithamnion thuioides f. breviarticulatum [Piccone] | | image |
| Callithamnion thuioides_('thujoides') | (J.E. Smith) S.F. Gray | image |
| Callithamnion thuioides_('thuyoides') | (J.E. Smith) C. Agardh | image |
| Callithamnion thuyoideum | (Smith) C. Agardh orth. mut. Harvey | image |
| Callithamnion tingens | Harvey mss. | image |
| Callithamnion tocwottoniense_('tocwottoniensis') | Harvey mss. | image |
| Callithamnion tomentellum | Harvey mss. | image |
| Callithamnion trifarium | Meneghini | image |
| Callithamnion truncatum | Meneghini | image |
| Callithamnion turneri | (Roth) S.F. Gray | image |
| Callithamnion turneri var. subverticillatum | Lenormand | image |
| Callithamnion turneri var. turneri | J. Agardh | image |
| Callithamnion turneri var. turneri | J. Agardh | image |
| Callithamnion turneri var. variabile | J. Agardh | image |
| Callithamnion uncinatum | Dawson | image |
| Callithamnion unilaterale | Harvey ms. | image |
| Callithamnion unilaterale | Zanardini | image |
| Callithamnion unilaterale | Zanardini | image |
| Callithamnion uruguayense | Taylor | image |
| Callithamnion utriculosum | Kützing | image |
| Callithamnion varispirale_('varispiralis') | Dawson | image |
| Callithamnion veleroae | Dawson | image |
| Callithamnion ventricosum | Kützing | image |
| Callithamnion venustissimum | Montagne | image |
| Callithamnion venustissimum | Montagne | image |
| Callithamnion vermilarae | De Notaris | image |
| Callithamnion versicolor | (C. Agardh) C. Agardh | image |
| Callithamnion versicolor | (C. Agardh) Naccari | image |
| Callithamnion versicolor var. furcatum | C. Agardh | image |
| Callithamnion versicolor var. minus_('minor') | C. Agardh | image |
| Callithamnion versicolor var. seirospermum | Harvey | image |
| Callithamnion verticillaster | Shperk | image |
| Callithamnion verticillatum | (Lightfoot) Kützing | image |
| Callithamnion vidovichii f. divaricatum_('divaricata') | (Kützing) Hauck | image |
| Callithamnion vidovichii | Meneghini | image |
| Callithamnion vieillardii_('Vieillardi') | Kützing | image |
| Callithamnion vieillardii_('Vieillardi') | Kützing | image |
| Callithamnion violaceum | Schousboe | image |
| Callithamnion welwitschii | J. Agardh | image |
| Callithamnion wilsonianum | J. Agardh | image |
| Callithamnion wilsonianum | J. Agardh ms. | image |
| Dasya callithamnium_('callithamnion') | (Sonder) Harvey | image |
| EUCALLITHAMNION | C.W. Nägeli | image |
| EUCALLITHAMNION | F. Ardissone | image |
| EUCALLITHAMNION | W.G. Farlow | image |
| Eupogonium callithamnium_('callithamnion') | (Sonder) Kützing | image |
| RHODOCHORTON | (Nägeli) Farlow & also on card: Subgenus of Callithamnion\} | image |