• Acanthophora aokii Okamura, 1934: isomorphic
• Acanthophora dendroides Harvey, 1855: isomorphic
• Acanthophora pacifica (Setchell) Kraft, 1979: isomorphic
• Acanthophora ramulosa Lindenberg ex Kützing, 1843: isomorphic
• Acanthophora spicifera (M.Vahl) Børgesen, 1910: isomorphic
• Acinetospora asiatica Yaegashi, Yamagishi & Kogame, 2015: isomorphic
• Acinetospora filamentosa (Noda) Yaegashi, Uwai & Kogame, 2015: isomorphic
• Acinetospora nicholsoniae Hollenberg, 1971: isomorphic
• Acrochaetium actinocladum I.A.Abbott, 1962: isomorphic
• Acrochaetium affine M.A.Howe & Hoyt, 1916: isomorphic
• Acrochaetium agardhiellae A.B.Joly & Cordeiro, 1963: isomorphic
• Acrochaetium alcyonidiae C.C.Jao: isomorphic
• Acrochaetium angustum (K.M.Drew) Papenfuss, 1945: isomorphic
• Acrochaetium antillarum W.R.Taylor, 1942: isomorphic
• Acrochaetium arcuatum (K.M.Drew) C.K.Tseng, 1945: isomorphic
• Acrochaetium armoricanum Feldmann, 1954: isomorphic
• Acrochaetium armoricum Feldmann, 1954: isomorphic
• Acrochaetium arnoldii Weber-van Bosse, 1921: isomorphic
• Acrochaetium avrainvilleae Børgesen, 1915: isomorphic
• Acrochaetium bahreinii Børgesen, 1939: isomorphic
• Acrochaetium balliae (Stegenga) Stegenga, Bolton & R.J.Anderson, 1997: isomorphic
• Acrochaetium bengalicum A.K.Islam & A.Aziz, 1987: isomorphic
• Acrochaetium blomquistii Aziz, 1965: isomorphic
• Acrochaetium bulbosa G.Hamel, 1927: isomorphic
• Acrochaetium bulbosum Hamel: isomorphic
• Acrochaetium byssaceum (Kützing) Nägeli, 1862: isomorphic
• Acrochaetium caesareae Feldmann, 1931: isomorphic
• Acrochaetium caespitiforme Børgesen, 1920: isomorphic
• Acrochaetium callopodum (Rosenvinge) Hamel: isomorphic
• Acrochaetium candelabrum Børgesen, 1942: isomorphic
• Acrochaetium carneum J.Agardh: isomorphic
• Acrochaetium chaetomorphae (Tanaka & P.H.Hô) Heerebout, 1968: isomorphic
• Acrochaetium champiae P.Anand, 1943: isomorphic
• Acrochaetium chondriae Aziz, 1965: isomorphic
• Acrochaetium cladestinum (Mont.) Howe: isomorphic
• Acrochaetium clandestinum (Montagne) M.Howe, 1914: isomorphic
• Acrochaetium colaconemoides P.H.Hô, 1969: isomorphic
• Acrochaetium concavum (F.Schmitz & Heydrich) Setchell & Gardner: isomorphic
• Acrochaetium crassipes (Børgesen) Børgesen, 1915: isomorphic
• Acrochaetium curtum Baardseth, 1941: isomorphic
• Acrochaetium delisea Aziz, 1965: isomorphic
• Acrochaetium discoideum Børgesen, 1924: isomorphic
• Acrochaetium distichosporum E.Y.Dawson, Acleto & Foldvik, 1964: isomorphic
• Acrochaetium dotyi I.A.Abbott, 1962: isomorphic
• Acrochaetium doumerquei Hamel & Hamel-Joukov, 1931: isomorphic
• Acrochaetium drewii Baardseth: isomorphic
• Acrochaetium dwarkense Børgesen, 1932: isomorphic
• Acrochaetium eastwoodae (Setchell & N.L.Gardner) Papenfuss, 1945: isomorphic
• Acrochaetium effusum Levring, 1953: isomorphic
• Acrochaetium entophyticum Batters, 1902: isomorphic
• Acrochaetium epispiculum A.B.Joly & Cordeiro, 1963: isomorphic
• Acrochaetium epizooicum A.A.Aleem, 1980: isomorphic
• Acrochaetium erectum Børgesen, 1932: isomorphic
• Acrochaetium ernothrix Børgesen, 1915: isomorphic
• Acrochaetium fernandezianum (Levring) Papenfuss, 1947: isomorphic
• Acrochaetium flexuosum Vickers, 1905: isomorphic
• Acrochaetium fuegiense Kylin, 1919: isomorphic
• Acrochaetium galaxaurae Aziz, 1965: isomorphic
• Acrochaetium globosum Børgesen, 1915: isomorphic
• Acrochaetium grande (Levring) Papenfuss, 1947: isomorphic
• Acrochaetium grateloupiae E.Y.Dawson, 1950: isomorphic
• Acrochaetium hamelii Feldmann, 1931: isomorphic
• Acrochaetium hirsutum (K.M.Drew) P.W.Gabrielson, 2000: isomorphic
• Acrochaetium hlulekaense Stegenga, 1985: isomorphic
• Acrochaetium homorhizum Børgesen: isomorphic
• Acrochaetium hormorhizum Børgesen, 1915: isomorphic
• Acrochaetium howei (Yamada) Papenfuss, 1945: isomorphic
• Acrochaetium hoytii F.S.Collins, 1908: isomorphic
• Acrochaetium hummii Aziz, 1965: isomorphic
• Acrochaetium imitator I.A.Abbott, 1962: isomorphic
• Acrochaetium inkyui Y.-P.Lee, 1987: isomorphic
• Acrochaetium interpositum (Heydrich) Børgesen, 1915: isomorphic
• Acrochaetium islamii Aziz, 1965: isomorphic
• Acrochaetium iyengarii Børgesen, 1933: isomorphic
• Acrochaetium jamaicense V.J.Chapman, 1963: isomorphic
• Acrochaetium japonicum Papenfuss, 1945: isomorphic
• Acrochaetium klulekaense Stegena: isomorphic
• Acrochaetium krusadii Børgesen, 1937: isomorphic
• Acrochaetium kurogii (Y.P.Lee & Lindstrom) Y.P.Lee & I.K.Lee, 1988: isomorphic
• Acrochaetium kylinioides Feldmann, 1958: isomorphic
• Acrochaetium lauterbachii (F.Schmitz & Heydrich) Hamel, 1927: isomorphic
• Acrochaetium laxum I.A.Abbott, 1962: isomorphic
• Acrochaetium leptonemoides Levring, 1955: isomorphic
• Acrochaetium levringii Papenfuss, 1947: isomorphic
• Acrochaetium liagoraefilum Børgesen, 1937: isomorphic
• Acrochaetium liagoroides Børgesen, 1937: isomorphic
• Acrochaetium luxurians (J.Agardh ex Kützing) Nägeli, 1862: isomorphic
• Acrochaetium macropoda P.J.L.Dangeard, 1953: isomorphic
• Acrochaetium macropus Kylin, 1919: isomorphic
• Acrochaetium madinae Hamel & Hamel-Joukov, 1931: isomorphic
• Acrochaetium mahumetanum Hamel, 1927: isomorphic
• Acrochaetium manorense P.Anand, 1943: isomorphic
• Acrochaetium mauritianum Børgesen, 1942: isomorphic
• Acrochaetium molle (Pilger) Hamel, 1927: isomorphic
• Acrochaetium multisporum Børgesen, 1937: isomorphic
• Acrochaetium netrocarpum Børgesen, 1915: isomorphic
• Acrochaetium nitidulum I.A.Abbott, 1962: isomorphic
• Acrochaetium nurulislamii A.Aziz & S.Islam, 2009: isomorphic
• Acrochaetium obscurum (K.M.Drew) Papenfuss, 1945: isomorphic
• Acrochaetium opetigenum Børgesen, 1915: isomorphic