1. Species Fucus abnormis Stackhouse
2. Species Fucus antennulatus Raffeneau-Delile
3. Species Fucus antennulatus Raffeneau Delile
4. Species Fucus aphyllantos Gmelin
5. Species Fucus atomarius (Woodward) Bertoloni
6. Species Fucus bacciferus
7. Species Fucus botryoid Forssk.
8. Species Fucus capitatus Gmelin
9. Species Fucus capitatus Stackh.
10. Species Fucus capreolatus R.Brown
11. Species Fucus caranoides
12. Species Fucus ceranoides Linnaeus, 1753
13. Species Fucus cespitosus
14. Species Fucus chalonii Feldmann, 1941
15. Species Fucus confervicola Chamisso
16. Species Fucus conglobatus Turner
17. Species Fucus coriaceus Roussel, 1806
18. Species Fucus corrigerus Vahl
19. Species Fucus cottonii M.J.Wynne & Magne, 1991
20. Species Fucus cystocarpus C.Agardh
21. Species Fucus degenerativus (Arcich.) Richard
22. Species Fucus deustus 'Fl.Dan.'
23. Species Fucus diaphanus Esper, 1800
24. Species Fucus distichus Linnaeus, 1767
25. Species Fucus evesiculosus Bory de Saint-Vincent
26. Species Fucus exilis R.Brown
27. Species Fucus filiformis S.G.Gmelin, 1768
28. Species Fucus fistulosus Huds.
29. Species Fucus flabellum Bertoloni
30. Species Fucus fuecii De la Pylaie
31. Species Fucus fungosus Desf.
32. Species Fucus funiformis Gunnerus
33. Species Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011
34. Species Fucus heterophyllus C.L.Willdenow, 1794
35. Species Fucus radicans L.Bergström & L.Kautsky, 2005
36. Species Fucus serratus Linnaeus, 1753
37. Species Fucus sherardii
38. Species Fucus spiralis Linnaeus, 1753
39. Species Fucus tremella
40. Species Fucus vesiculosus Linnaeus, 1753
41. Species Fucus virsoides J.Agardh, 1868
42. Species Fucus abies-marinus S.G.Gmelin, 1768 accepted as Cystoseira abies-marina (S.G.Gmelin) C.Agardh, 1820 accepted as Treptacantha abies-marina (S.G.Gmelin) Kützing, 1843 (synonym)
43. Species Fucus abrotanifolius Linnaeus, 1753 accepted as Cystoseira foeniculacea (Linnaeus) Greville, 1830
44. Species Fucus abrotanoides S.G.Gmelin, 1768 accepted as Gongolaria baccata (S.G.Gmelin, 1768) Molinari & Guiry, 2020 (unaccepted > junior subjective synonym)
45. Species Fucus abscissus Turner, 1819 accepted as Melanthalia abscissa (Turner) J.D.Hooker & Harvey, 1845
46. Species Fucus acanthophorus J.V.Lamouroux, 1805 accepted as Acanthophora spicifera (M.Vahl) Børgesen, 1910
47. Species Fucus acerosus Forsskål, 1775 accepted as Gelidiella acerosa (Forsskål) Feldmann & Hamel, 1934
48. Species Fucus acetabulus Gouan, 1815 accepted as Kallymenia reniformis (Turner) J.Agardh, 1842 (synonym)
49. Species Fucus acicularis Wulfen, 1803 accepted as Chondracanthus acicularis (Roth) Fredericq, 1993
50. Species Fucus acicularis Esper, 1800 accepted as Cystoclonium purpureum (Hudson) Batters, 1902
51. Species Fucus acinaria S.G.Gmelin, 1768 accepted as Sargassum acinarium (Linnaeus) Setchell, 1933 (synonym)
52. Species Fucus acinarius Linnaeus, 1753 accepted as Sargassum acinarium (Linnaeus) Setchell, 1933
53. Species Fucus aculeatus Linnaeus, 1763 accepted as Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813
54. Species Fucus aculeatus Esper, 1798 accepted as Cystoseira usneoides (Linnaeus) M.Roberts, 1968 accepted as Treptacantha usneoides (Linnaeus) Orellana & Sansón, 2019
55. Species Fucus aeruginosus Turner, 1811 accepted as Gracilaria multipartita (Clemente) Harvey, 1846 (synonym)
56. Species Fucus agarum S.G.Gmelin, 1768 accepted as Agarum clathratum Dumortier, 1822
57. Species Fucus alatus Hudson, 1762 accepted as Membranoptera alata (Hudson) Stackhouse, 1809
58. Species Fucus albidus Esper, 1800 accepted as Gracilaria gracilis (Stackhouse) Steentoft, L.M.Irvine & Farnham, 1995
59. Species Fucus albus Hudson, 1762 accepted as Ahnfeltia plicata (Hudson) E.M.Fries, 1836
60. Species Fucus alveatus Turner, 1819 accepted as Psilophycus alveatus (Turner) W.A.Nelson, Leister & Hommersand, 2011 (synonym)
61. Species Fucus alveolatus Esper, 1799 accepted as Mastocarpus stellatus (Stackhouse) Guiry, 1984 (synonym)
62. Species Fucus amansii J.V.Lamouroux, 1805 accepted as Gelidium amansii (J.V.Lamouroux) J.V.Lamouroux, 1813
63. Species Fucus ambiguus Clemente, 1807 accepted as Dictyopteris polypodioides (A.P.De Candolle) J.V.Lamouroux, 1809
64. Species Fucus amphibius Hudson, 1778 accepted as Bostrychia scorpioides (Hudson) Montagne, 1842
65. Species Fucus anceps Harvey & Ward ex Carruthers, 1864 accepted as Fucus distichus subsp. anceps (Harvey & Ward ex Carruthers) H.T.Powell, 1957
66. Species Fucus angustifolius Turner, 1811 accepted as Sargassum angustifolium C.Agardh, 1820
67. Species Fucus anomalus Pallas, 1766 accepted as Sporochnus anomalus (Pallas) M.J.Wynne, 2003
68. Species Fucus antarcticus Chamisso, 1822 accepted as Durvillaea antarctica (Chamisso) Hariot, 1892
69. Species Fucus aquifolius Turner, 1807 accepted as Sargassum aquifolium (Turner) C.Agardh, 1820
70. Species Fucus arbuscula A.P.de Candolle, 1805 accepted as Bryopsis plumosa (Hudson) C.Agardh, 1823 (synonym)
71. Species Fucus areschougii Kjellman, 1890 accepted as Fucus spiralis Linnaeus, 1753
72. Species Fucus articulatus Forsskål, 1775 accepted as Hormophysa cuneiformis (J.F.Gmelin) P.C.Silva, 1987 (synonym)
73. Species Fucus articulatus (Hudson) Lightfoot, 1777 accepted as Lomentaria articulata (Hudson) Lyngbye, 1819 (synonym)
74. Species Fucus asparagoides Woodward, 1794 accepted as Bonnemaisonia asparagoides (Woodward) C.Agardh, 1822
75. Species Fucus asplenioides Esper, 1804 accepted as Ptilota asplenioides (Esper) C.Agardh, 1822
76. Species Fucus australis Sonder, 1845 accepted as Myriodesma quercifolium (Bory de Saint-Vincent) J.Agardh, 1848
77. Species Fucus axillaris J.Agardh, 1868 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797 accepted as Fucus vesiculosus f. volubilis (Goodenough & Woodward) A.C.Mathieson & Dawes, 2017 (synonym)
78. Species Fucus axillaris R.Brown ex Turner, 1811 accepted as Seirococcus axillaris (R.Brown ex Turner) Greville, 1830
79. Species Fucus babingtonii Harvey, 1860 accepted as Silvetia babingtonii (Harvey) E.A.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
80. Species Fucus baccatus S.G.Gmelin, 1768 accepted as Gongolaria baccata (S.G.Gmelin, 1768) Molinari & Guiry, 2020
81. Species Fucus baccifer Turner, 1802 accepted as Sargassum natans (Linnaeus) Gaillon, 1828
82. Species Fucus baccularia Mertens, 1819 accepted as Sargassum baccularia (Mertens) C.Agardh, 1824
83. Species Fucus baillouviana S.G.Gmelin, 1768 accepted as Dasya baillouviana (S.G.Gmelin) Montagne, 1841
84. Species Fucus balticus C.Agardh, 1814 accepted as Fucus vesiculosus Linnaeus, 1753
85. Species Fucus bangii Hornemann, 1813 accepted as Phyllophora crispa (Hudson) P.S.Dixon, 1964
86. Species Fucus banksii Turner, 1808 accepted as Hormosira banksii (Turner) Decaisne, 1842
87. Species Fucus barbatus Goodenough & Woodward, 1797 accepted as Cystoseira barbata (Stackhouse) C.Agardh, 1820 accepted as Treptacantha barbata (Stackhouse) Orellana & Sansón, 2019
88. Species Fucus barbatus Gunnerus, 1772 accepted as Devaleraea ramentacea (Linnaeus) Guiry, 1982
89. Species Fucus barbatus Linnaeus, 1753 accepted as Cystoseira foeniculacea (Linnaeus) Greville, 1830 (synonym)
90. Species Fucus bifidus Hudson, 1778 accepted as Rhodophyllis divaricata (Stackhouse) Papenfuss, 1950
91. Species Fucus bifidus S.G.Gmelin, 1768 accepted as Arthrothamnus bifidus (S.G.Gmelin) J.Agardh, 1868
92. Species Fucus bifurcatus Velley, 1792 accepted as Bifurcaria bifurcata R.Ross, 1958
93. Species Fucus bifurcatus Gunnerus, 1766 accepted as Laminaria digitata (Hudson) J.V.Lamouroux, 1813 (synonym)
94. Species Fucus biserratus Thunberg, 1815 accepted as Sargassum fulvellum (Turner) C.Agardh, 1820
95. Species Fucus botryocarpus Turner, 1819 accepted as Botryocarpa prolifera Greville, 1830
96. Species Fucus botryoides Wulfen, 1791 accepted as Botryocladia botryoides (Wulfen) Feldmann, 1941
97. Species Fucus botryoides Turner, 1811 accepted as Laurencia botryoides (C.Agardh) Gaillon, 1828
98. Species Fucus bracteatus S.G.Gmelin, 1768 accepted as Gigartina bracteata (S.G.Gmelin) Setchell & N.L.Gardner, 1933
99. Species Fucus brodiei Turner, 1809 accepted as Coccotylus brodiei (Turner) Kützing, 1843
100. Species Fucus brownii Turner, 1819 accepted as Cystophora brownii (Turner) J.Agardh, 1848
101. Species Fucus bryum Strøm, 1788 accepted as Cladostephus spongiosus (Hudson) C.Agardh, 1817
102. Species Fucus buccinalis Linnaeus, 1771 accepted as Ecklonia maxima (Osbeck) Papenfuss, 1940
103. Species Fucus bulbosus Hudson, 1778 accepted as Saccorhiza polyschides (Lightfoot) Batters, 1902
104. Species Fucus bullatus O.F.Müller, 1777 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805
105. Species Fucus bursa-pastoris S.G.Gmelin, 1768 accepted as Gracilaria bursa-pastoris (S.G.Gmelin) P.C.Silva, 1952 (synonym)
106. Species Fucus bursigerus J.Agardh, 1868 accepted as Fucus evanescens C.Agardh, 1820 accepted as Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957
107. Species Fucus bursus (Linnaeus) Turner, 1811 accepted as Codium bursa (Olivi) C.Agardh, 1817
108. Species Fucus byssoides Goodenough & Woodward, 1797 accepted as Vertebrata byssoides (Goodenough & Woodward) Kuntze, 1891
109. Species Fucus cabrerae Clemente, 1807 accepted as Carpomitra costata (Stackhouse) Batters, 1902
110. Species Fucus cactoides Turner, 1809 accepted as Caulerpa cactoides (Turner) C.Agardh, 1817
111. Species Fucus caespitosus Stackhouse, 1795 accepted as Gelidium corneum var. caespitosum (Turner) J.Agardh, 1851 (synonym)
112. Species Fucus canalicularioides Clemente, 1807 accepted as Liagora distenta (Mertens ex Roth) J.V.Lamouroux, 1816
113. Species Fucus canaliculatus Linnaeus, 1767 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (synonym)
114. Species Fucus capensis S.G.Gemelin, 1768 accepted as Gelidium capense (S.G.Gmelin) P.C.Silva, 1987
115. Species Fucus capillaceus S.G.Gmelin, 1768 accepted as Pterocladiella capillacea (S.G.Gmelin) Santelices & Hommersand, 1997
116. Species Fucus capillaris Hudson, 1778 accepted as Gloiosiphonia capillaris (Hudson) Carmichael, 1833
117. Species Fucus caprinus Gunnerus, 1766 accepted as Polyides rotunda (Hudson) Gaillon, 1828
118. Species Fucus caprinus Vahl, 1794 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805
119. Species Fucus carnosus Schmidel, 1794 accepted as Dilsea carnosa (Schmidel) Kuntze, 1898
120. Species Fucus cartilagineus Linnaeus, 1753 accepted as Plocamium cartilagineum (Linnaeus) P.S.Dixon, 1967
121. Species Fucus cartilagineus Forsskål, 1775 accepted as Phycodrys rubens (Linnaeus) Batters, 1902
122. Species Fucus caudatus Labillardière, 1807 accepted as Perithalia caudata (Labillardière) Womersley, 1967
123. Species Fucus cephalornithos Labillardière, 1807 accepted as Caulocystis cephalornithos (Labillardière) J.E. Areschoug, 1854
124. Species Fucus cervicornis Turner, 1808 accepted as Gracilaria cervicornis (Turner) J.Agardh, 1852
125. Species Fucus chemnitzia Esper, 1800 accepted as Caulerpa chemnitzia (Esper) J.V.Lamouroux, 1809 (synonym)
126. Species Fucus chondrophyllus R.Brown ex Turner, 1819 accepted as Xiphophora chondrophylla (R.Brown ex Turner) Montagne ex Harvey, 1855
127. Species Fucus ciliatus Hudson, 1762 accepted as Calliblepharis ciliata (Hudson) Kützing, 1843
128. Species Fucus cirrhosus Turner, 1807 accepted as Plocamium cirrhosum (Turner) M.J.Wynne, 2002
129. Species Fucus clathrus S.G.Gmelin, 1768 accepted as Thalassiophyllum clathrus (S.G.Gmelin) Postels & Ruprecht, 1840 (synonym)
130. Species Fucus claudei Turner, 1811 accepted as Claudea elegans J.V.Lamouroux, 1813
131. Species Fucus clavatus J.V.Lamouroux, 1805 accepted as Gelidium clavatum (J.V.Lamouroux) J.V.Lamouroux, 1813
132. Species Fucus clavellosus Lightfoot ex Turner, 1802 accepted as Lomentaria clavellosa (Lightfoot ex Turner) Gaillon, 1828
133. Species Fucus clavifer Turner, 1807 accepted as Caulerpa racemosa (Forsskål) J.Agardh, 1873
134. Species Fucus coccineus Hudson, 1778 accepted as Plocamium cartilagineum (Linnaeus) P.S.Dixon, 1967 (synonym)
135. Species Fucus commersonii J.V.Lamouroux ex Montagne, 1847 accepted as Cystoseira myrica (S.G.Gmelin) C.Agardh, 1820 accepted as Polycladia myrica (S.G.Gmelin) Draima, Ballesteros, F.Rousseau & T.Thibaut, 2010 (synonym)
136. Species Fucus comosus Poiret, 1808 accepted as Sargassum desfontainesii (Turner) C.Agardh, 1820 (synonym)
137. Species Fucus comosus Labillardière, 1807 accepted as Phyllospora comosa (Labillardière) C.Agardh, 1839
138. Species Fucus complanatus Clemente, 1807 accepted as Pterosiphonia complanata (Clemente) Falkenberg, 1897
139. Species Fucus compressus Esper, 1799 accepted as Cystoseira compressa (Esper) Gerloff & Nizamuddin, 1975
140. Species Fucus compressus C.Agardh, 1824 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
141. Species Fucus concatenatus Linnaeus, 1753 (unaccepted)
142. Species Fucus concinnus R.Brown ex Turner, 1811 (unaccepted)
143. Species Fucus confertus R.Brown ex Turner, 1811 (unaccepted)
144. Species Fucus confervoides Linnaeus, 1763 (unaccepted, synonym)
145. Species Fucus confervoides Hudson, 1762 (unaccepted)
146. Species Fucus confluens R.Brown ex Turner, 1811 (unaccepted)
147. Species Fucus congestus R.Brown ex Turner, 1809 (unaccepted)
148. Species Fucus constrictus Turner, 1809-1811 (unaccepted)
149. Species Fucus constrictus Harvey, 1838 (unaccepted)
150. Species Fucus contortus S.G.Gmelin, 1768 (unaccepted)
151. Species Fucus corallinus O.F.Müller, 1777 (unaccepted)
152. Species Fucus coralloides Poiret, 1808 (unaccepted)
153. Species Fucus corallorhiza Turner, 1808 (unaccepted)
154. Species Fucus cordatus Turner, 1809 (unaccepted)
155. Species Fucus cornatus Linnaeus, 1771 (unaccepted)
156. Species Fucus corneus Hudson, 1762 (unaccepted)
157. Species Fucus corneus Zoega, 1772 (unaccepted)
158. Species Fucus corniculatus R.Brown ex Turner, 1811 (unaccepted)
159. Species Fucus corniculatus Wulfen, 1786 (unaccepted)
160. Species Fucus cornucopiae Mertens, 1829 (unaccepted)
161. Species Fucus cornutus Turner, 1811 (unaccepted)
162. Species Fucus coronopifolius Zoega, 1772 (unaccepted)
163. Species Fucus coronopifolius Goodenough & Woodward, 1797 (unaccepted)
164. Species Fucus corymbiferus S.G.Gmelin, 1768 (unaccepted)
165. Species Fucus costatus Stackhouse, 1802 (unaccepted)
166. Species Fucus costatus Turner, 1819 (unaccepted)
167. Species Fucus cottoni M.J.Wynne & Magne, 1991 (unaccepted)
168. Species Fucus crassipes Mertens ex Turner, 1809 (unaccepted, synonym)
169. Species Fucus crenatus S.G.Gmelin, 1768 (unaccepted)
170. Species Fucus crenulatus Turner, 1802 (unaccepted)
171. Species Fucus cribrosus Mertens f., 1829 (unaccepted)
172. Species Fucus crinalis Hare ex Turner, 1819 (unaccepted)
173. Species Fucus crinitus Desfontaines, 1799 (unaccepted, synonym)
174. Species Fucus crinitus S.G.Gmelin, 1768 (unaccepted)
175. Species Fucus crispatus Hudson, 1778 (unaccepted)
176. Species Fucus crispatus Linnaeus, 1767 (unaccepted, synonym)
177. Species Fucus crispus Linnaeus, 1767 (unaccepted, synonym)
178. Species Fucus crispus Hudson, 1762 (unaccepted)
179. Species Fucus crispus Forsskål, 1775 (unaccepted)
180. Species Fucus cristatus Sommerfelt, 1826 (unaccepted)
181. Species Fucus cristatus Linnaeus ex Turner, 1808 (unaccepted, synonym)
182. Species Fucus cristatus Withering, 1796 (unaccepted, synonym)
183. Species Fucus cuneiformis J.F.Gmelin, 1792 (unaccepted)
184. Species Fucus cupressoides Vahl, 1802 (unaccepted)
185. Species Fucus cyanospermus Delile, 1813 (unaccepted)
186. Species Fucus cypellon Bertoloni, 1818 (unaccepted)
187. Species Fucus dasyphyllus Woodward, 1794 (unaccepted, synonym)
188. Species Fucus debilis Forsskål, 1775 (unaccepted)
189. Species Fucus decipiens R.Brown ex Turner, 1811 (unaccepted)
190. Species Fucus decurrens R.Brown ex Turner, 1811 (unaccepted, synonym)
191. Species Fucus degener Esper, 1804 (unaccepted, synonym)
192. Species Fucus delicatulus (Gunnerus) Vahl, 1797 (unaccepted)
193. Species Fucus dentatus Linnaeus, 1767 (unaccepted)
194. Species Fucus denticulatus N.L.Burman, 1768 (unaccepted)
195. Species Fucus denticulatus Forsskål, 1775 (unaccepted)
196. Species Fucus dentifolius Turner, 1808 (unaccepted)
197. Species Fucus desfontainesii Turner, 1811 (unaccepted)
198. Species Fucus desvauxii Mertens, 1819 (unaccepted)
199. Species Fucus devoniensis Greville, 1821 (unaccepted, synonym)
200. Species Fucus dichotomus Lepechin, 1775 (unaccepted)
201. Species Fucus dichotomus (Hudson) Bertoloni, 1819 (unaccepted, synonym)
202. Species Fucus digitatus Hudson, 1762 (unaccepted, synonym)
203. Species Fucus dilatatus Turner, 1811 (unaccepted)
204. Species Fucus discors Linnaeus, 1767 (unaccepted)
205. Species Fucus distentus Mertens ex Roth, 1806 (unaccepted)
206. Species Fucus divaricatus R.Brown ex Turner, 1809 (unaccepted)
207. Species Fucus divaricatus Linnaeus, 1753 (unaccepted)
208. Species Fucus divergens J.Agardh, 1872 (unaccepted)
209. Species Fucus diversifolius Turner, 1800 (unaccepted)
210. Species Fucus dorycarpus Turner, 1809 (unaccepted)
211. Species Fucus dulcis S.G.Gmelin, 1768 (unaccepted)
212. Species Fucus echinatus Stackhouse, 1797 (unaccepted, synonym)
213. Species Fucus echinatus Poiret, 1808 (unaccepted, synonym)
214. Species Fucus edentatus Bachelot Pylaie, 1830 (unaccepted)
215. Species Fucus edulis S.G.Gmelin, 1768 (unaccepted, synonym)
216. Species Fucus edulis Stackhouse, 1801 (unaccepted)
217. Species Fucus elminthoides Velley, 1792 (unaccepted)
218. Species Fucus elongatus Linnaeus, 1753 (unaccepted)
219. Species Fucus elongatus Gunnerus, 1772 (unaccepted)
220. Species Fucus endiviifolius Lightfoot, 1777 (unaccepted)
221. Species Fucus epiphyllus O.F.Müller, 1777 (unaccepted)
222. Species Fucus erica-marina S.G.Gmelin (unaccepted, synonym)
223. Species Fucus ericifolius Turner, 1808 (unaccepted, synonym)
224. Species Fucus ericoides Linnaeus, 1763 (unaccepted, synonym)
225. Species Fucus erinaceus Turner, 1807 (unaccepted)
226. Species Fucus esculentus Linnaeus, 1767 (unaccepted)
227. Species Fucus evanescens C.Agardh, 1820 (unaccepted)
228. Species Fucus excisus Forsskål, 1775 (unaccepted)
229. Species Fucus excisus Linnaeus, 1753 (unaccepted)
230. Species Fucus fascia O.F.Müller, 1778 (unaccepted)
231. Species Fucus fasciculatus Turner, 1819 (unaccepted)
232. Species Fucus fasciola Roth, 1797 (unaccepted)
233. Species Fucus fastigiatus Linnaeus, 1753 (unaccepted, synonym)
234. Species Fucus fastigiatus J.Agardh, 1841 (unaccepted)
235. Species Fucus fibrosus Hudson, 1778 (unaccepted > junior subjective synonym)
236. Species Fucus filamentosus Wulfen, 1803 (unaccepted)
237. Species Fucus filicinus Wulfen, 1791 (unaccepted)
238. Species Fucus filifolius C.Agardh, 1812 (unaccepted)
239. Species Fucus filiformis Strøm, 1762 (unaccepted)
240. Species Fucus filiformis Hudson, 1762 (unaccepted, synonym)
241. Species Fucus filum Linnaeus, 1753 (unaccepted)
242. Species Fucus fimbriatus Hudson, 1778 (unaccepted)
243. Species Fucus fimbriatus Desfontaines, 1799 (unaccepted)
244. Species Fucus fimbriatus R.Brown ex Turner, 1811 (unaccepted)
245. Species Fucus fissifolius Mertens, 1819 (unaccepted, synonym)
246. Species Fucus flaccidus Labillardière, 1807 (unaccepted, synonym)
247. Species Fucus flaccidus Turner, 1807 (unaccepted)
248. Species Fucus flagelliformis O.F.Müller, 1775 (unaccepted)
249. Species Fucus flagellum S.G.Gmelin, 1768 (unaccepted)
250. Species Fucus flavicans Mertens, 1819 (unaccepted)
251. Species Fucus flavus Linnaeus fil., 1782 (unaccepted)
252. Species Fucus flexuosus Esper, 1802 (unaccepted)
253. Species Fucus floccosus Esper, 1802 (unaccepted)
254. Species Fucus floresii Clemente, 1807 (unaccepted)
255. Species Fucus foeniculaceus Linnaeus, 1753 (unaccepted)
256. Species Fucus foliaceus Strøm, 1788 (unaccepted)
257. Species Fucus foliifer Forsskål, 1775 (unaccepted)
258. Species Fucus foliosissimus Lamouroux, 1813 (unaccepted, synonym)
259. Species Fucus forsskalii Mertens, 1819 (unaccepted)
260. Species Fucus forsteri Mertens ex Turner, 1809 (unaccepted)
261. Species Fucus fragilis Forsskål, 1775 (unaccepted)
262. Species Fucus fraxinifolius Mertens ex Turner, 1809 (unaccepted)
263. Species Fucus fruticulosus Wulfen, 1791 (unaccepted)
264. Species Fucus fueci Bachelot de la Pylaie, 1830 (unaccepted)
265. Species Fucus fulvellus Turner, 1808 (unaccepted)
266. Species Fucus fungiformis Gunnerus, 1772 (unaccepted)
267. Species Fucus furcatus C.Agardh, 1820 (unaccepted)
268. Species Fucus furcatus Esper, 1800 (unaccepted)
269. Species Fucus furcellatus Linnaeus, 1763 (unaccepted)
270. Species Fucus furcellatus Mohr, 1786 (unaccepted)
271. Species Fucus gaertneri S.G.Gmelin, 1768 (unaccepted)
272. Species Fucus gardneri P.C.Silva, 1953 (unaccepted, synonym)
273. Species Fucus gelatinosus Desfontaines, 1799 (unaccepted, synonym)
274. Species Fucus gelatinus Esper, 1800 (unaccepted)
275. Species Fucus giganteus Gaudichaud, 1826 (unaccepted)
276. Species Fucus gigartinus Linnaeus, 1759 (unaccepted)
277. Species Fucus gigartinus Oeder, 1768 (unaccepted)
278. Species Fucus gladiatus Labillardière, 1807 (unaccepted)
279. Species Fucus glandulosus Solander ex Turner, 1808 (unaccepted)
280. Species Fucus gracilis Stackhouse, 1801 (unaccepted)
281. Species Fucus graminifolius Lepechin, 1775 (unaccepted)
282. Species Fucus graminifolius Turner, 1819 (unaccepted)
283. Species Fucus granateus J.V.Lamouroux, 1805 (unaccepted, synonym)
284. Species Fucus granulatus Linnaeus, 1763 (unaccepted)
285. Species Fucus griffithsiae Turner, 1808 (unaccepted)
286. Species Fucus gulaman M.Blanco, 1837 (unaccepted)
287. Species Fucus hamulosus Esper, 1800 (unaccepted)
288. Species Fucus harveyanus Decaisne, 1864 (unaccepted)
289. Species Fucus harveyanus Decaisne ex J.Agardh, 1868 (unaccepted)
290. Species Fucus helminthocorton (Schwendimann) Tourrette, 1782 (unaccepted, synonym)
291. Species Fucus hemiphyllus Turner, 1811 (unaccepted)
292. Species Fucus herbaceus Turner, 1808 (unaccepted)
293. Species Fucus herbaceus Hudson, 1778 (unaccepted, synonym)
294. Species Fucus herediae Clemente, 1807 (unaccepted)
295. Species Fucus hetaerophyllus Clemente, 1807 (unaccepted)
296. Species Fucus heterophyllus Turner, 1808 (unaccepted)
297. Species Fucus hirsutus Linnaeus, 1767 (unaccepted, synonym)
298. Species Fucus horneri Turner, 1808 (unaccepted)
299. Species Fucus hybridus A.P.de Candolle, 1805 (unaccepted)
300. Species Fucus hyperboreus Gunnerus, 1766 (unaccepted)
301. Species Fucus hypnoides R.Brown ex Turner, 1809 (unaccepted)
302. Species Fucus hypoglossoides Stackhouse, 1801 (unaccepted)
303. Species Fucus hypoglossum Woodward, 1794 (unaccepted)
304. Species Fucus ilicifolius Turner, 1807 (unaccepted)
305. Species Fucus implexus Desfontaines, 1799 (unaccepted, synonym)
306. Species Fucus incisifolius Turner, 1811 (unaccepted)
307. Species Fucus incurvus Hudson, 1762 (unaccepted)
308. Species Fucus inermis Brown ex Turner, 1811 (unaccepted, synonym)
309. Species Fucus inflatus Linnaeus, 1753 (unaccepted, synonym)
310. Species Fucus jubatus Goodenough & Woodward, 1797 (unaccepted)
311. Species Fucus kaliformis Goodenough & Woodward, 1797 (unaccepted)
312. Species Fucus labillardierei Mertens ex Turner, 1809 (unaccepted)
313. Species Fucus lacer Wulfen, 1803 (unaccepted, synonym)
314. Species Fucus laceratus S.G.Gmelin, 1768 (unaccepted, synonym)
315. Species Fucus lacerifolius Turner, 1811 (unaccepted)
316. Species Fucus lacerus Stackhouse, 1797 (unaccepted, synonym)
317. Species Fucus lacerus Linnaeus, 1763 (unaccepted)
318. Species Fucus lacerus J.V.Lamouroux, 1813 (unaccepted, synonym)
319. Species Fucus laciniatus Hudson, 1762 (unaccepted)
320. Species Fucus lacinulatus M.Vahl, 1802 (unaccepted)
321. Species Fucus lambertii Turner, 1819 (unaccepted)
322. Species Fucus lamourouxii Turner, 1811 (unaccepted, synonym)
323. Species Fucus lanceolatus Withering, 1796 (unaccepted)
324. Species Fucus langsdorfii Turner, 1811 (unaccepted)
325. Species Fucus lanosus Linnaeus, 1767 (unaccepted, synonym)
326. Species Fucus larix Turner, 1819 (unaccepted)
327. Species Fucus latifolius Turner, 1808 (unaccepted)
328. Species Fucus latifolius Poiret, 1808 (unaccepted)
329. Species Fucus laxus R.Brown ex Turner, 1811 (unaccepted)
330. Species Fucus lendigerus Linnaeus, 1753 (unaccepted)
331. Species Fucus lichenastrum Poiret, 1817 (unaccepted)
332. Species Fucus lichenoides Turner, 1808 (unaccepted, synonym)
333. Species Fucus ligulatus Lightfoot, 1777 (unaccepted, synonym)
334. Species Fucus limitaneus (Montagne) Montagne, 1856 (unaccepted, synonym)
335. Species Fucus linariifolius Turner, 1807 (unaccepted)
336. Species Fucus linearifolius Turner, 1808 (unaccepted)
337. Species Fucus linearis Turner, 1815 (unaccepted)
338. Species Fucus linearis Oeder, 1767 (unaccepted)
339. Species Fucus linearis Hudson, 1762 (unaccepted, synonym)
340. Species Fucus linearis Forsskål, 1775 (unaccepted, synonym)
341. Species Fucus lineatus Turner, 1819 (unaccepted, synonym)
342. Species Fucus lingulatus Solander ex Woodward, 1794 (unaccepted, synonym)
343. Species Fucus linifolius Turner, 1811 (unaccepted)
344. Species Fucus lividus Turner, 1819 (unaccepted)
345. Species Fucus lomation Bertoloni, 1818 (unaccepted, synonym)
346. Species Fucus lomentarius (Lyngbye) Sommerfelt, 1826 (unaccepted)
347. Species Fucus longifolius Turner, 1809 (unaccepted)
348. Species Fucus longissimus S.G.Gmelin, 1768 (unaccepted)
349. Species Fucus loreus Linnaeus, 1767 (unaccepted)
350. Species Fucus lucidus R.Brown ex Turner, 1811 (unaccepted)
351. Species Fucus luetkeanus K.Mertens, 1829 (unaccepted)
352. Species Fucus lumbricalis Hudson, 1762 (unaccepted, synonym)
353. Species Fucus lutarius (Chauvin ex J.Kickx f.) Kützing, 1860 (unaccepted, synonym)
354. Species Fucus lycopodioides Linnaeus, 1767 (unaccepted, synonym)
355. Species Fucus lycopodium Turner, 1811 (unaccepted)
356. Species Fucus lycopodium Stackhouse, 1802 (unaccepted, synonym)
357. Species Fucus mackayi Turner, 1808 (unaccepted)
358. Species Fucus mammillosus Goodenough & Woodward, 1797 (unaccepted)
359. Species Fucus maschalocarpus Turner, 1811-1819 (unaccepted)
360. Species Fucus maxillosus Poiret, 1808 (unaccepted)
361. Species Fucus maximilianii Schrader, 1821 (unaccepted, synonym)
362. Species Fucus maximus Osbeck, 1757 (unaccepted)
363. Species Fucus membranaceus Stackhouse, 1795 (unaccepted)
364. Species Fucus membranifolius Goodenough & Woodward, 1797 (unaccepted, synonym)
365. Species Fucus membranifolius C.Agardh, 1810 (unaccepted)
366. Species Fucus menziesii Turner, 1808 (unaccepted)
367. Species Fucus miclonensis Bachelot de la Pylaie, 1830 (unaccepted)
368. Species Fucus microceratius Turner, 1809 (unaccepted)
369. Species Fucus microphyllus De la Pylaie, 1829 (unaccepted, synonym)
370. Species Fucus miniatus Draparnaud ex A.P.de Candolle, 1815 (unaccepted)
371. Species Fucus miniatus O.F.Müller, 1778 (unaccepted)
372. Species Fucus minimus Hering, 1841 (unaccepted)
373. Species Fucus moniliformis Esper, 1804 (unaccepted)
374. Species Fucus moniliformis Labillardière, 1807 (unaccepted)
375. Species Fucus mucronatus Turner (unaccepted)
376. Species Fucus multifidus Hudson, 1778 (unaccepted)
377. Species Fucus multipartitus Clemente, 1807 (unaccepted)
378. Species Fucus muricatus Turner, 1808 (unaccepted)
379. Species Fucus muricatus S.G.Gmelin, 1768 (unaccepted)
380. Species Fucus musciformis Wulfen, 1791 (unaccepted)
381. Species Fucus muscoides (A.D.Cotton) Feldmann & Magne, 1964 (unaccepted, synonym)
382. Species Fucus muscoides Linnaeus, 1753 (unaccepted)
383. Species Fucus muscoides Hudson, 1762 (unaccepted)
384. Species Fucus muscoides Forsskål, 1775 (unaccepted, synonym)
385. Species Fucus myagroides Mertens ex Turner, 1809 (unaccepted)
386. Species Fucus myrica S.G.Gemlin, 1768 (unaccepted, synonym)
387. Species Fucus mytili Nienburg, 1932 (unaccepted, synonym)
388. Species Fucus natans Linnaeus, 1753 (unaccepted, synonym)
389. Species Fucus nayadiformis Delile, 1813 (unaccepted, synonym)
390. Species Fucus nemalion Bertoloni, 1818 (unaccepted, synonym)
391. Species Fucus nervosus A.P.de Candolle, 1805 (unaccepted)
392. Species Fucus nitens N.L.Gardner, 1922 (unaccepted)
393. Species Fucus nodicaulis Withering, 1796 (unaccepted)
394. Species Fucus nodosus Linnaeus, 1753 (unaccepted, synonym)
395. Species Fucus nodularius Mertens, 1819 (unaccepted)
396. Species Fucus nootkanus Esper, 1802 (unaccepted)
397. Species Fucus norvegicus Gunnerus, 1772 (unaccepted)
398. Species Fucus obtusatus Labillardière, 1807 (unaccepted)
399. Species Fucus obtusus Hudson, 1778 (unaccepted)
400. Species Fucus ocellatus J.V.Lamouroux, 1802 (unaccepted)
401. Species Fucus oederi Gunnerus, 1772 (unaccepted)
402. Species Fucus oederi Esper, 1802 (unaccepted, synonym)
403. Species Fucus onustus Mertens, 1819 (unaccepted)
404. Species Fucus opuntia Goodenough & Woodward, 1797 (unaccepted)
405. Species Fucus ornatus Linnaeus, 1771 (unaccepted)
406. Species Fucus osmunda S.G.Gmelin, 1768 (unaccepted)
407. Species Fucus osmundaceus Turner, 1809 (unaccepted, synonym)
408. Species Fucus osmundus S.G.Gmelin, 1768 (unaccepted)
409. Species Fucus ovalis Hudson, 1778 (unaccepted)
410. Species Fucus ovatus Hudson, 1762 (unaccepted)
411. Species Fucus ovinus Gunnerus, 1766 (unaccepted)
412. Species Fucus pallidus Turner, 1808 (unaccepted)
413. Species Fucus palmatus Linnaeus, 1753 (unaccepted, synonym)
414. Species Fucus palmetta Stackhouse, 1801 (unaccepted, synonym)
415. Species Fucus paniculatus Turner, 1811 (unaccepted)
416. Species Fucus papillosus Forsskål, 1775 (unaccepted)
417. Species Fucus paradoxus R.Brown ex Turner, 1811 (unaccepted)
418. Species Fucus parvifolius Turner, 1811 (unaccepted)
419. Species Fucus patens C.Agardh, 1815 (unaccepted)
420. Species Fucus patens Goodenough & Woodward, 1797 (unaccepted)
421. Species Fucus pavonicus Linnaeus, 1753 (unaccepted, synonym)
422. Species Fucus pavonius Linnaeus, 1759 (unaccepted)
423. Species Fucus pectinatus Gunnerus, 1772 (unaccepted)
424. Species Fucus pedunculatus Hudson, 1778 (unaccepted)
425. Species Fucus peniculus R.Brown ex Turner, 1819 (unaccepted)
426. Species Fucus peperocarpos Poiret, 1808 (unaccepted)
427. Species Fucus perforatus Bory de Saint-Vincent, 1803 (unaccepted, synonym)
428. Species Fucus peronii Mertens, 1819 (unaccepted)
429. Species Fucus pertusus K.H.Mertens, 1829 (unaccepted, synonym)
430. Species Fucus phenax Sprengel, 1809 (unaccepted, synonym)
431. Species Fucus phyllanthus Turner, 1819 (unaccepted, synonym)
432. Species Fucus phyllitis Stackhouse, 1796 (unaccepted)
433. Species Fucus pilularia S.G.Gmelin, 1768 (unaccepted, synonym)
434. Species Fucus pilulifer Turner, 1808 (unaccepted)
435. Species Fucus pinastroides S.G.Gmelin, 1768 (unaccepted, synonym)
436. Species Fucus pinnatifidus Hudson, 1762 (unaccepted, synonym)
437. Species Fucus pinnatifidus Strøm, 1788 (unaccepted)
438. Species Fucus pinnatifidus Hornemann, 1813 (unaccepted)
439. Species Fucus pinnatifidus Oeder, 1767 (unaccepted)
440. Species Fucus pinnatifolius C.Agardh, 1815 (unaccepted, synonym)
441. Species Fucus pinnatus Linnaeus f., 1782 (unaccepted)
442. Species Fucus pinnatus Gunnerus, 1766 (unaccepted)
443. Species Fucus pinnatus Hudson, 1762 (unaccepted)
444. Species Fucus pistillatus S.G.Gmelin, 1768 (unaccepted)
445. Species Fucus platycarpus Turner, 1809 (unaccepted)
446. Species Fucus platycarpus Thuret, 1851 (unaccepted, illegitimate name (later homonym))
447. Species Fucus platylobium Mertens, 1819 (unaccepted)
448. Species Fucus plicatus Hudson, 1762 (unaccepted, synonym)
449. Species Fucus plicatus Esper, 1798 (unaccepted)
450. Species Fucus plocamium S.G.Gmelin, 1768 (unaccepted)
451. Species Fucus plumaris Forsskål, 1775 (unaccepted)
452. Species Fucus plumosus Hudson, 1762 (unaccepted)
453. Species Fucus plumosus Linnaeus, 1767 (unaccepted)
454. Species Fucus poiteaui J.V.Lamouroux, 1805 (unaccepted)
455. Species Fucus polypodioides Desfontaines, 1799 (unaccepted)
456. Species Fucus polypodioides S.G.Gmelin, 1768 (unaccepted)
457. Species Fucus polyschides Lightfoot, 1777 (unaccepted)
458. Species Fucus potatorum Labillardière, 1807 (unaccepted)
459. Species Fucus pristoides Turner, 1807 (unaccepted)
460. Species Fucus procerrimus Esper, 1800 (unaccepted)
461. Species Fucus prolifer M.Blanco, 1837 (unaccepted)
462. Species Fucus prolifer Lightfoot, 1777 (unaccepted, synonym)
463. Species Fucus prolifer Forsskål, 1775 (unaccepted)
464. Species Fucus pruniformis Gunnerus, 1772 (unaccepted)
465. Species Fucus pseudoceranoïdes S.G.Gmelin, 1768 (unaccepted)
466. Species Fucus pseudociliatus J.V.Lamouroux (unaccepted)
467. Species Fucus pseudocrispus Clemente, 1807 (unaccepted)
468. Species Fucus pseudopalmatus J.V.Lamouroux, 1805 (unaccepted)
469. Species Fucus ptilotus Gunnerus, 1772 (unaccepted)
470. Species Fucus pumilus Vahl, 1792 (unaccepted)
471. Species Fucus punctatus Stackhouse, 1796 (unaccepted)
472. Species Fucus purpurascens Hudson, 1778 (unaccepted, synonym)
473. Species Fucus purpureus Hudson, 1762 (unaccepted)
474. Species Fucus purpureus Turner, 1807-1808 (unaccepted, synonym)
475. Species Fucus pusillus Stackhouse, 1795 (unaccepted)
476. Species Fucus pygmaeus Lightfoot, 1777 (unaccepted)
477. Species Fucus pyrifer Linnaeus, 1771 (unaccepted)
478. Species Fucus quercifolius R.Brown ex Turner, 1809 (unaccepted)
479. Species Fucus racemosus Forsskål, 1775 (unaccepted)
480. Species Fucus radiatus Goodenough & Woodward, 1797 (unaccepted)
481. Species Fucus radiatus Turner, 1808 (unaccepted)
482. Species Fucus radiciformis R.Brown ex Turner, 1809 (unaccepted)
483. Species Fucus radula Esper, 1802 (unaccepted)
484. Species Fucus ramentaceus Linnaeus, 1767 (unaccepted)
485. Species Fucus ramosissimus Oeder, 1766 (unaccepted, synonym)
486. Species Fucus rangiferina R.Brown ex Turner, 1811 (unaccepted)
487. Species Fucus reniformis Turner, 1809 (unaccepted)
488. Species Fucus repens Lightfoot, 1777 (unaccepted, synonym)
489. Species Fucus retortus Mertens, 1819 (unaccepted)
490. Species Fucus retroflexus Labillardière, 1807 (unaccepted)
491. Species Fucus rhizodes Ehrhart ex Turner, 1819 (unaccepted)
492. Species Fucus rigidus Vahl, 1802 (unaccepted)
493. Species Fucus rosa-marina S.G.Gmelin, 1768 (unaccepted)
494. Species Fucus roseus O.F.Müller, 1775 (unaccepted)
495. Species Fucus rotundatus Hudson, 1762 (unaccepted)
496. Species Fucus rotundifolius Draparnaud, 1815 (unaccepted, synonym)
497. Species Fucus rotundus Hudson, 1762 (unaccepted)
498. Species Fucus rubens Linnaeus, 1753 (unaccepted, synonym)
499. Species Fucus rubens Esper, 1799 (unaccepted)
500. Species Fucus rubescens Sommerfelt, 1826 (unaccepted)
501. Species Fucus ruscifolius Turner, 1802 (unaccepted, synonym)
502. Species Fucus saccatus Lepechin, 1775 (unaccepted)
503. Species Fucus saccharinus Linnaeus, 1753 (unaccepted)
504. Species Fucus salicifolius S.G.Gmelin, 1768 (unaccepted)
505. Species Fucus saltii Turner, 1819 (unaccepted)
506. Species Fucus sanguineus Hudson, 1762 (unaccepted)
507. Species Fucus sargasso S.G.Gmelin, 1768 (unaccepted)
508. Species Fucus sarniensis Mertens in Roth, 1806 (unaccepted)
509. Species Fucus scalpelliformis R.Brown ex Turner, 1809 (unaccepted)
510. Species Fucus scoparius Mertens ex Turner, 1809 (unaccepted)
511. Species Fucus scoparius Strøm, 1762 (unaccepted, synonym)
512. Species Fucus scorpioides Hudson, 1762 (unaccepted)
513. Species Fucus scorpioides O.F.Müller, 1782 (unaccepted)
514. Species Fucus scorpioides Hornemann, 1813 (unaccepted)
515. Species Fucus seaforthii Turner, 1808 (unaccepted)
516. Species Fucus sedoides Desfontaines, 1799 (unaccepted)
517. Species Fucus sedoides R.Brown ex Turner, 1809 (unaccepted)
518. Species Fucus selaginoides Linnaeus, 1759 (unaccepted)
519. Species Fucus selago Turner, 1808 (unaccepted)
520. Species Fucus sericeus S.G.Gmelin, 1768 (unaccepted)
521. Species Fucus serra S.G.Gmelin, 1768 (unaccepted)
522. Species Fucus serratifolius C.Agardh, 1815 (unaccepted)
523. Species Fucus serratifolius Thunberg, 1815 (unaccepted)
524. Species Fucus serrulatus Forsskål, 1775 (unaccepted)
525. Species Fucus sertolara Bertoloni, 1819 (unaccepted, synonym)
526. Species Fucus sertularioides S.G.Gmelin, 1768 (unaccepted)
527. Species Fucus siliculosus Stackhouse, 1796 (unaccepted)
528. Species Fucus siliquastrus Mertens ex Turner, 1809 (unaccepted)
529. Species Fucus siliquosus Linnaeus, 1753 (unaccepted)
530. Species Fucus simpliciuscula R.Brown ex Turner, 1809 (unaccepted)
531. Species Fucus sinuosus Goodenough & Woodward, 1797 (unaccepted)
532. Species Fucus sisymbryoides Turner, 1809 (unaccepted)
533. Species Fucus soboliferus M.Vahl, 1792 (unaccepted)
534. Species Fucus spartioides Turner, 1819 (unaccepted)
535. Species Fucus spiciferus M.Vahl, 1802 (unaccepted)
536. Species Fucus spiniformis J.V.Lamouroux, 1805 (unaccepted)
537. Species Fucus spinosus Linnaeus, 1771 (unaccepted)
538. Species Fucus spinosus S.G.Gmelin, 1768 (unaccepted)
539. Species Fucus squamarius S.G.Gmelin, 1768 (unaccepted)
540. Species Fucus stackhousei Clemente, 1807 (unaccepted)
541. Species Fucus stellatus Stackhouse, 1796 (unaccepted)
542. Species Fucus stiriata Turner, 1807 (unaccepted)
543. Species Fucus stiriatus Turner, 1808 (unaccepted)
544. Species Fucus striatus Draparnaud, 1824 (unaccepted, synonym)
545. Species Fucus subfarcinatus Mertens, 1819 (unaccepted)
546. Species Fucus subfuscus Woodward, 1791 (unaccepted)
547. Species Fucus subrepandus Forsskål, 1775 (unaccepted)
548. Species Fucus swartzii C.Agardh, 1815 (unaccepted)
549. Species Fucus swartzii Turner, 1811 (unaccepted)
550. Species Fucus tamariscifolius Hudson, 1762 (unaccepted)
551. Species Fucus taxifolius M.Vahl, 1802 (unaccepted)
552. Species Fucus taxiformis Delile, 1813 (unaccepted)
553. Species Fucus telephifolius Turner, 1808 (unaccepted)
554. Species Fucus tenax Turner, 1806 (unaccepted)
555. Species Fucus tenellus Esper, 1800 (unaccepted)
556. Species Fucus tenellus M.Vahl, 1802 (unaccepted)
557. Species Fucus tenerrimus Esper, 1800 (unaccepted)
558. Species Fucus tenerrimus Clemente, 1807 (unaccepted)
559. Species Fucus tentaculatus Bertoloni, 1818 (unaccepted, synonym)
560. Species Fucus tenuissimus Withering, 1796 (unaccepted)
561. Species Fucus teres Goodenough & Woodward, 1797 (unaccepted)
562. Species Fucus tetragonus Delile, 1813 (unaccepted, synonym)
563. Species Fucus textilis Clemente, 1807 (unaccepted)
564. Species Fucus thunbergii Mertens ex Roth, 1800 (unaccepted, synonym)
565. Species Fucus thyrsoides Turner, 1808 (unaccepted)
566. Species Fucus tilesii C.Agardh, 1812 (unaccepted)
567. Species Fucus tinctorius Clemente, 1807 (unaccepted)
568. Species Fucus tomentosus Hudson, 1778 (unaccepted)
569. Species Fucus tortilis C.Agardh, 1812 (unaccepted)
570. Species Fucus torulosus R.Brown ex Turner, 1811 (unaccepted)
571. Species Fucus tournefortii J.V.Lamouroux, 1805 (unaccepted)
572. Species Fucus triangularis J.F.Gmelin, 1792 (unaccepted)
573. Species Fucus tridens Mertens ex Turner, 1811 (unaccepted)
574. Species Fucus trigonus Clemente, 1807 (unaccepted)
575. Species Fucus trinodis Forsskål, 1775 (unaccepted, synonym)
576. Species Fucus triqueter Linnaeus, 1771 (unaccepted)
577. Species Fucus triqueter S.G.Gmelin, 1768 (unaccepted)
578. Species Fucus truncatus Pallas, 1776 (unaccepted)
579. Species Fucus tuberculatus Hudson, 1778 (unaccepted)
580. Species Fucus tuberculatus Solander, 1777 (unaccepted, synonym)
581. Species Fucus tubulosus Lepechin, 1775 (unaccepted)
582. Species Fucus tuniformis Bertoloni, 1819 (unaccepted)
583. Species Fucus turbinatus Linnaeus, 1753 (unaccepted)
584. Species Fucus usnea R.Brown ex Turner, 1811 (unaccepted)
585. Species Fucus usneoides Linnaeus, 1759 (unaccepted)
586. Species Fucus uvarius J.A.Murray, 1774 (unaccepted, synonym)
587. Species Fucus uvifer Turner, 1811 (unaccepted)
588. Species Fucus uvifer Forsskål, 1775 (unaccepted)
589. Species Fucus valentiae Turner, 1809 (unaccepted)
590. Species Fucus variabilis Goodenough & Woodward, 1797 (unaccepted)
591. Species Fucus venosus Linnaeus, 1771 (unaccepted)
592. Species Fucus vermicularis Turner, 1815 (unaccepted)
593. Species Fucus vermicularis (Scopoli) Bertoloni, 1819 (unaccepted)
594. Species Fucus verrucosus Hudson, 1762 (unaccepted, synonym)
595. Species Fucus verruculosus Bertoloni, 1818 (unaccepted)
596. Species Fucus verruculosus Mertens, 1819 (unaccepted)
597. Species Fucus versicolor S.G.Gmelin, 1768 (unaccepted)
598. Species Fucus verticillatus Lightfoot, 1777 (unaccepted)
599. Species Fucus vestitus R.Brown ex Turner, 1811 (unaccepted)
600. Species Fucus virgatus Mertens, 1819 (unaccepted)
601. Species Fucus virgatus Gunnerus, 1766 (unaccepted)
602. Species Fucus viridis O.F.Müller, 1782 (unaccepted)
603. Species Fucus viscidus Forsskål, 1775 (unaccepted)
604. Species Fucus vitifolius Bonpland, 1809 (unaccepted, synonym)
605. Species Fucus vittatus Linnaeus, 1767 (unaccepted)
606. Species Fucus volubilis Linnaeus, 1759 (unaccepted, synonym)
607. Species Fucus wiggii Turner, 1802 (unaccepted)
608. Species Fucus woodwardia R.Brown ex Turner, 1811 (unaccepted)
609. Species Fucus wrightii Harvey, 1860 (unaccepted)
610. Species Fucus wrightii Turner, 1811 (unaccepted, synonym)
611. Species Fucus zonalis J.V.Lamouroux, 1805 (unaccepted)
612. Species Fucus zosteroides J.V.Lamouroux, 1805 (unaccepted, synonym)
613. Species Fucus zosteroides Turner, 1819 (unaccepted)
614. Species Fucus acutus 'Turner' (uncertain)
615. Species Fucus albus Esper, 1798 (uncertain)
616. Species Fucus allantoides Brown ex Turner, 1819 (uncertain)
617. Species Fucus angulatus S.G.Gmelin, 1768 (uncertain)
618. Species Fucus angulatus Roussel, 1806 (uncertain)
619. Species Fucus articulatus S.G.Gmelin, 1768 (uncertain)
620. Species Fucus atomarius S.G.Gmelin, 1768 (uncertain)
621. Species Fucus barbulatus Poiret (uncertain)
622. Species Fucus bastera S.G.Gmelin, 1768 (uncertain)
623. Species Fucus bicornis Gmelin (uncertain)
624. Species Fucus bicornis De la Pylaie (uncertain)
625. Species Fucus bipinnatus Desfontaines, 1799 (uncertain)
626. Species Fucus brevifolius Poiret (uncertain)
627. Species Fucus buxbaumii C.Agardh (uncertain)
628. Species Fucus callopilophorus Forsskål, 1775 (uncertain)
629. Species Fucus capensis Areschoug, 1860 (uncertain)
630. Species Fucus cartilagineus Gunnerus, 1772 (uncertain)
631. Species Fucus caulescens Gmelin (uncertain)
632. Species Fucus cirrhifolius West (uncertain)
633. Species Fucus clavatus C.Agardh, 1822 (uncertain)
634. Species Fucus coarctatus Schousboe (uncertain)
635. Species Fucus conoides Forssk. (uncertain)
636. Species Fucus deformis Esper, 1800 (uncertain)
637. Species Fucus denudatus 'Turner' (uncertain)
638. Species Fucus diaphanus Raffeneau Delile (uncertain)
639. Species Fucus dichotomus Sauvageau, 1915 (uncertain)
640. Species Fucus diffusus Hudson, 1778 (uncertain)
641. Species Fucus disciplinalis Bory de Saint-Vincent (uncertain)
642. Species Fucus divaricatus Gunnerus, 1772 (uncertain)
643. Species Fucus emarginatus Vahl (uncertain)
644. Species Fucus felinus Raffeneau Delile (uncertain)
645. Species Fucus fibrilla Esper, 1804 (uncertain)
646. Species Fucus filicinus Hudson, 1762 (uncertain)
647. Species Fucus fimbriatus S.G.Gmelin, 1768 (uncertain)
648. Species Fucus flaccidus J.V.Lamouroux, 1802 (uncertain)
649. Species Fucus flagellaris Esper, 1800 (uncertain)
650. Species Fucus flexilis Wulfen, 1803 (uncertain)
651. Species Fucus forsskaolii Mertens (uncertain)
652. Species Fucus friabilis Clemente, 1807 (uncertain, synonym)
653. Species Fucus fulvescens Esper, 1802 (uncertain)
654. Species Fucus furcatus Stackhouse, 1802 (uncertain)
655. Species Fucus geniculatus S.G.Gmelin, 1768 (uncertain)
656. Species Fucus globulifer Turner, 1819 (uncertain, uncertain taxonomic status subjected to verification)
657. Species Fucus gramineus A.P.de Candolle, 1807 (uncertain)
658. Species Fucus hirtus Bonpland, 1809 (uncertain)
659. Species Fucus humboldtii Bonpland, 1809 (uncertain)
660. Species Fucus humilis Schousboe (uncertain)
661. Species Fucus hypnoides Wulfen, 1787 (uncertain, uncertain taxonomic status subjected to verification)
662. Species Fucus imbricatus Schousboe (uncertain)
663. Species Fucus intermedius Van Goor, 1923 (uncertain)
664. Species Fucus lagascae Clemente, 1807 (uncertain)
665. Species Fucus lichenoides S.G.Gmelin, 1768 (uncertain)
666. Species Fucus lichenoides Goodenough & Woodward, 1797 (uncertain)
667. Species Fucus ligulatus S.G.Gmelin, 1768 (uncertain)
668. Species Fucus lobatus Schousboe (uncertain)
669. Species Fucus lubricus Schousboe (uncertain)
670. Species Fucus mamillaris Esper, 1802 (uncertain)
671. Species Fucus marginalis Schousboe (uncertain)
672. Species Fucus marginalis Wulfen, 1791 (uncertain, uncertain taxonomic status subjected to verification)
673. Species Fucus membranaceus N.L.Burman, 1768 (uncertain)
674. Species Fucus membranifolius Withering, 1796 (uncertain)
675. Species Fucus mesembrianthemi Schousboe (uncertain)
676. Species Fucus nereideus Lightfoot, 1777 (uncertain)
677. Species Fucus ovifrons Weber & D.Mohr, 1805 (uncertain)
678. Species Fucus palmetta S.G.Gmelin, 1768 (uncertain)
679. Species Fucus papillosus S.G.Gmelin, 1768 (uncertain)
680. Species Fucus parksii N.L.Gardner, 1940 (uncertain)
681. Species Fucus pinnatus N.L.Burman, 1768 (uncertain)
682. Species Fucus plumula Esper, 1800 (uncertain)
683. Species Fucus polyphyllus S.G.Gmelin, 1768 (uncertain)
684. Species Fucus potamogetifolius Turra, 1780 (uncertain)
685. Species Fucus pumilus Hudson, 1778 (uncertain)
686. Species Fucus racemosus Esper, 1800 (uncertain)
687. Species Fucus rigidus Turra, 1780 (uncertain)
688. Species Fucus rissoanus Schousboe (uncertain)
689. Species Fucus seta Sprengel, 1809 (uncertain)
690. Species Fucus setaceus Esper, 1808 (uncertain)
691. Species Fucus setaceus Hudson, 1778 (uncertain)
692. Species Fucus setaceus Poiret, 1808 (uncertain)
693. Species Fucus setaceus Wulfen, 1803 (uncertain)
694. Species Fucus siliculosus Linnaeus, 1767 (uncertain)
695. Species Fucus spataeformis Esper, 1808 (uncertain)
696. Species Fucus spermophorus Linnaeus, 1767 (uncertain)
697. Species Fucus sphaerocephalus Esper, 1804 (uncertain)
698. Species Fucus squamulosus Turner, 1809 (uncertain)
699. Species Fucus tendo Linnaeus, 1753 (uncertain)
700. Species Fucus tenuissimus Esper, 1800 (uncertain)
701. Species Fucus tetragonus Goodenough & Woodward, 1797 (uncertain)
702. Species Fucus ulvoides Turner, 1809 (uncertain)
703. Species Fucus uncialis Schousboe (uncertain)
704. Species Fucus undulatus J.F.Gmelin, 1792 (uncertain)
705. Species Fucus uniformis Esper, 1800 (uncertain)
706. Species Fucus vermicularis S.G.Gmelin, 1768 (uncertain, uncertain taxonomic status subjected to verification)
707. Species Fucus virens Schousboe (uncertain)
708. Species Fucus vulpinus Esper, 1800 (uncertain)
709. Species Fucus zeylanicus Retzius, 1791 (uncertain)

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