Hypnea cenomyce J.Agardh species accepted

Hypnea cryptica P.B.Jesus & J.M.C.Nunes species accepted

Hypnea musciformis subsp. nigra Harvey subspecies synonym

Hypnea musciformis subsp. muscoides Harvey subspecies synonym

Hypnea musciformis subsp. pumila Harvey subspecies synonym

Hypnea musciformis subsp. cornuta Harvey subspecies synonym

Hypnea musciformis subsp. flexuosa Harvey subspecies synonym

Hypnea tsudae M.O.Paiano F.P.Cabrera & A.R.Sherwood, 2022 species accepted

Hypnea pannosa J.Agardh, 1847 species accepted

Hypnea nidulans Setch., 1924 species accepted

Hypnea johnstonii species accepted

Hypnea ecklonii Suhr species accepted

Hypnea ramentacea (C.Agardh) J.Agardh, 1876 species accepted

Hypnea episcopalis J.D.Hooker & Harvey species synonym

Hypnea valentiae species accepted

Hypnea californica species accepted

Hypnea charoides J.V.Lamour. species accepted

Hypnea seticulosa J.Agardh, 1851 species synonym

Hypnea musciformis var. ramulosa Harvey, 1834 variety synonym

Hypnea divaricata var. ramulosa (Harvey) J.Agardh, 1851 variety synonym

Hypnea volubilis species accepted

Hypnea cornuta (Kütz.) J.Agardh species accepted

Chondroclonium cornutum Kütz., 1849 species synonym

Hypnea divaricata (C.Agardh) Greville, 1830 species accepted

Hypnea boergesenii T.Tanaka, 1941 species synonym

Hypnea spicifera (Suhr) Harvey species accepted

Hypnea armata (C.Agardh) J.Agardh, 1851 species synonym

Hypnea harveyi Kütz., 1849 species synonym

Hypnophycus spicifera (Suhr) Kütz., 1843 species synonym

Hypnea spinella (C.Agardh) Kütz. species accepted

Hypnea cervicornis J.Agardh species accepted

Hypnea musciformis var. pumila Harvey, 1834 variety synonym

Gigartina spinella (C.Agardh) Grev., 1830 species synonym

Hypnophycus cervicornis (J.Agardh) Kuntze, 1891 species homotypic synonym

Hypnea variabilis species accepted

Hypnea musciformis var. cornuta Harvey, 1834 variety synonym

Hypnea nidifica J.Agardh species accepted

Hypnea esperi Bory species accepted

Hypnea musciformis var. nigra Harvey, 1834 variety synonym

Hypnea musciformis var. flexuosa Harvey, 1834 variety synonym

Hypnea musciformis var. muscoides Harvey, 1834 variety synonym

Bonnemaisonia nootkana (Esper) P.C.Silva, 1953 species synonym

Fucus nootkanus Esper, 1802 species synonym

Hypnea spicigera Harvey, 1849 species synonym

Hypnea edeniana Nauer, Cassano & M.C.Oliveira species accepted

Sphaerococcus divaricatus C.Agardh, 1827 species synonym

Gracilaria spicifera Suhr, 1834 species synonym

Sphaerococcus musciformis var. armatus C.Agardh, 1822 variety synonym

Sphaerococcus spinellus C.Agardh species synonym

Hypnea vaga Kütz., 1863 species accepted

Hypnea adunca species accepted

Hypnea chordariae species accepted

Hypnea esperii Suhr species synonym

Hypnea bourgesenii T.Tonaka species synonym

Hypnea flava Nauer, Cassano & M.C.Oliveira species accepted

Hypnea aspera Kütz. species synonym

Hypnea yokoyana Nauer, Cassano & M.C.Oliveira species accepted

Hypnea pseudomusciformis Nauer, Cassano & M.C.Oliveira species accepted

Hypnea platyclada P.B.Jesus & J.M.C.Nunes species accepted

Hypnea wynnei Nauer, Cassano & M.C.Oliveira species accepted

Hypnea brasiliensis P.B.Jesus, Nauer & J.M.C.Nunes species accepted