1. Species Hutchinsia spinella C.Agardh
2. Species Hutchinsia abyssina Lyngbye, 1880 accepted as Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824
3. Species Hutchinsia aculeata C.Agardh, 1817 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019 (synonym)
4. Species Hutchinsia allochroa (Roth) C.Agardh, 1824 accepted as Polysiphonia allochroa (Roth) Duby, 1830 (synonym)
5. Species Hutchinsia arachnoidea C.Agardh, 1827 accepted as Polysiphonia arachnoidea (C.Agardh) Zanardini, 1840
6. Species Hutchinsia arbuscula (Dillwyn) C.Agardh, 1817 accepted as Aglaothamnion sepositum (Gunnerus) Maggs & Hommersand, 1993 accepted as Gaillona seposita (Gunnerus) Athanasiadis, 2016
7. Species Hutchinsia atrorubescens (Dillwyn) C.Agardh, 1817 accepted as Polysiphonia nigra (Hudson) Batters, 1902 accepted as Vertebrata nigra (Hudson) Díaz-Tapia & Maggs, 2017
8. Species Hutchinsia badia (Dillwyn) C.Agardh, 1817 accepted as Polysiphonia nigra (Hudson) Batters, 1902 accepted as Vertebrata nigra (Hudson) Díaz-Tapia & Maggs, 2017
9. Species Hutchinsia biasolettiana C.Agardh, 1827 accepted as Carradoriella denudata (Dillwyn) Savoie & G.W.Saunders, 2019
10. Species Hutchinsia breviarticulata C.Agardh, 1824 accepted as Polysiphonia breviarticulata (C.Agardh) Zanardini, 1840 (synonym)
11. Species Hutchinsia brodiei (Dillwyn) Lyngbye, 1819 accepted as Leptosiphonia brodiei (Dillwyn) A.M.Savoie & G.W.Saunders, 2019
12. Species Hutchinsia byssoides (Goodenough & Woodward) C.Agardh, 1817 accepted as Brongniartella byssoides (Goodenough & Woodward) F.Schmitz, 1893 accepted as Vertebrata byssoides (Goodenough & Woodward) Kuntze, 1891
13. Species Hutchinsia coccinea (Hudson) C.Agardh, 1817 accepted as Heterosiphonia plumosa (J.Ellis) Batters, 1902
14. Species Hutchinsia collabens C.Agardh, 1824 accepted as Melanothamnus collabens (C.Agardh) Díaz-Tapia & Maggs, 2017
15. Species Hutchinsia comosa C.Agardh, 1824 accepted as Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824
16. Species Hutchinsia corymbifera C.Agardh, 1828 accepted as Streblocladia corymbifera (C.Agardh) Kylin, 1938
17. Species Hutchinsia dendritica C.Agardh, 1824 accepted as Dipterosiphonia dendritica (C.Agardh) F.Schmitz, 1897
18. Species Hutchinsia divaricata Hornemann, 1840 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019 (synonym)
19. Species Hutchinsia divaricata C.Agardh, 1817 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019 (synonym)
20. Species Hutchinsia elongata (Hudson) C.Agardh, 1817 accepted as Carradoriella elongata (Hudson) Savoie & G.W.Saunders, 2019
21. Species Hutchinsia expansa C.Agardh, 1817 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019
22. Species Hutchinsia fastigiata (Roth) C.Agardh, 1817 accepted as Vertebrata lanosa (Linnaeus) T.A.Christensen, 1967
23. Species Hutchinsia fibrata (Dillwyn) C.Agardh, 1817 accepted as Leptosiphonia fibrata (C.Agardh) A.M.Savoie & G.W.Saunders, 2019
24. Species Hutchinsia fibrillosa C.Agardh, 1817 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019 (synonym)
25. Species Hutchinsia filamentosa (Wulfen) C.Agardh, 1824 accepted as Spyridia filamentosa (Wulfen) Harvey, 1833
26. Species Hutchinsia flexella C.Agardh, 1828 accepted as Polysiphonia flexella (C.Agardh) J.Agardh, 1842 (synonym)
27. Species Hutchinsia flocculosa C.Agardh, 1824 accepted as Polysiphonia flocculosa (C.Agardh) Endlichter, 1843
28. Species Hutchinsia foeniculacea C.Agardh, 1824 accepted as Polysiphonia foeniculacea (C.Agardh) Sprengel, 1827 (synonym)
29. Species Hutchinsia furcellata C.Agardh, 1828 accepted as Vertebrata furcellata (C.Agardh) Kuntze, 1891
30. Species Hutchinsia glomerulata C.Agardh, 1824 accepted as Tolypiocladia glomerulata (C.Agardh) F.Schmitz, 1897
31. Species Hutchinsia griffithsiana (J.E.Smith) S.F.Gray, 1821 accepted as Spyridia griffithsiana (J.E.Smith) Zuccarello, Prud'homme & H.Stegenga, 2004 (synonym)
32. Species Hutchinsia implicata Lyngbye, 1819 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019
33. Species Hutchinsia lepadicola Lyngbye, 1819 accepted as Polysiphonia urceolata f. lepadicola (Lyngbye) Segi, 1951 (synonym)
34. Species Hutchinsia lyngbyei C.Agardh, 1828 accepted as Carradoriella elongata (Hudson) Savoie & G.W.Saunders, 2019
35. Species Hutchinsia macrocarpa C.Agardh, 1824 accepted as Polysiphonia macrocarpa (C.Agardh) Sprengel, 1827 (synonym)
36. Species Hutchinsia miniata C.Agardh, 1828 accepted as Platysiphonia delicata (Clemente) Cremades, 1990
37. Species Hutchinsia moestingii Lyngbye, 1819 accepted as Deltalsia parasitica (Hudson) Díaz-Tapia & Rodríguez-Buján, 2022
38. Species Hutchinsia nigrescens (Hudson) Lyngbye, 1819 accepted as Vertebrata fucoides (Hudson) Kuntze, 1891
39. Species Hutchinsia obscura C.Agardh, 1828 accepted as Lophosiphonia obscura (C.Agardh) Falkenberg, 1897
40. Species Hutchinsia ocellata (Grateloup) C.Agardh, 1824 accepted as Dasya ocellata (Grateloup) Harvey, 1833
41. Species Hutchinsia opaca C.Agardh, 1824 accepted as Polysiphonia opaca (C.Agardh) Moris & De Notaris, 1839
42. Species Hutchinsia parasitica (Hudson) C.Agardh, 1824 accepted as Deltalsia parasitica (Hudson) Díaz-Tapia & Rodríguez-Buján, 2022
43. Species Hutchinsia parvula C.Agardh, 1824 accepted as Polysiphonia parvula (C.Agardh) Montagne, 1846
44. Species Hutchinsia penicillata C.Agardh, 1824 accepted as Leptosiphonia brodiei (Dillwyn) A.M.Savoie & G.W.Saunders, 2019
45. Species Hutchinsia pennata C.Agardh, 1824 accepted as Xiphosiphonia pennata (C.Agardh) Savoie & G.W.Saunders, 2016
46. Species Hutchinsia periclados C.Agardh, 1828 accepted as Murrayella periclados (C.Agardh) F.Schmitz, 1893
47. Species Hutchinsia polyspora C.Agardh, 1824 accepted as Polysiphonia polyspora (C.Agardh) Montagne, 1840
48. Species Hutchinsia pulvinata (Roth) C.Agardh, 1828 accepted as Polysiphonia pulvinata (Roth) Sprengel, 1827
49. Species Hutchinsia ramulosa C.Agardh, 1824 accepted as Polysiphonia opaca (C.Agardh) Moris & De Notaris, 1839
50. Species Hutchinsia reptabunda Suhr, 1831 accepted as Vertebrata reptabunda (Suhr) Díaz-Tapia & Maggs, 2017
51. Species Hutchinsia rigens C.Agardh, 1827 accepted as Dipterosiphonia rigens (C.Agardh) Falkenberg, 1901
52. Species Hutchinsia roseola C.Agardh, 1828 accepted as Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824
53. Species Hutchinsia ruchingeri C.Agardh, 1827 accepted as Carradoriella elongata (Hudson) Savoie & G.W.Saunders, 2019
54. Species Hutchinsia sanguinea C.Agardh, 1827 accepted as Polysiphonia sanguinea (C.Agardh) Zanardini, 1840
55. Species Hutchinsia secunda C.Agardh, 1824 accepted as Herposiphonia secunda (C.Agardh) Ambronn, 1880
56. Species Hutchinsia spinulosa (Greville) C.Agardh, 1827 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019
57. Species Hutchinsia stricta (Mertens ex Dillwyn) C.Agardh, 1817 accepted as Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824
58. Species Hutchinsia stricta (Roth) Lyngbye, 1819 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019
59. Species Hutchinsia strictoides Lyngbye, 1819 accepted as Carradoriella elongata (Hudson) Savoie & G.W.Saunders, 2019
60. Species Hutchinsia subcontinua C.Agardh, 1828 accepted as Polysiphonia flocculosa (C.Agardh) Endlichter, 1843
61. Species Hutchinsia subulifera C.Agardh, 1827 accepted as Vertebrata subulifera (C.Agardh) Kuntze, 1891
62. Species Hutchinsia tenella C.Agardh, 1828 accepted as Herposiphonia tenella (C.Agardh) Ambronn, 1880 (basionym)
63. Species Hutchinsia tenuis C.Agardh, 1828 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019
64. Species Hutchinsia urceolata (Lightfoot ex Dillwyn) Lyngbye, 1819 accepted as Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824
65. Species Hutchinsia variegata C.Agardh, 1824 accepted as Carradoriella denudata (Dillwyn) Savoie & G.W.Saunders, 2019
66. Species Hutchinsia violacea (Roth) C.Agardh, 1817 accepted as Vertebrata fucoides (Hudson) Kuntze, 1891 (synonym)
67. Species Hutchinsia virgata C.Agardh, 1824 accepted as Carradoriella virgata (C.Agardh) P.C.Silva, 1996

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