灰蘚屬（學名：_Hypnum_），是灰蘚科下的一個屬。本屬大約有 60 種，大多分布於世界亞熱帶和溫帶地區的松林林地、草叢下，具土岩面及樹幹基部。中國有 15 種，在長江流域以南，常常與鐵芒萁或石蕊成群落生長。



下屬物種

本屬包括以下物種：


* _Hypnum aemulans_ Breidler in Limpricht, 1899

* _Hypnum alternans_ Bridel, 1801

* _Hypnum aluminicola_ C. Müller, 1851

* _Hypnum amabile_ Hampe, 1869

* _Hypnum andoi_ A. J. E. Smith, 1981 [1982]

* _Hypnum austrostramineum_ C. Müller in Neumayer, 1890

* _Hypnum bambergeri_ W. P. Schimper, 1860

* _Hypnum bicolor_ Bélanger, 1834

* _Hypnum bizotii_ Ochyra, 1984

* _Hypnum boryanum_ Schwaegrichen, 1816

* _Hypnum brachythecium_ Hampe & Lorentz, 1868

* _Hypnum calcicola_ Ando, 1958

* _Hypnum callichroum_ Bridel, 1827

* _Hypnum campoanum_ Brotherus, 1925

* _Hypnum caperatum_ Jaeger, 1880

* _Hypnum cariosum_ Roy in Austin, 1878

* _Hypnum cataractarum_ Sendtner, 1840

* _Hypnum celatum_ Jaeger, 1880

* _Hypnum chrysogaster_ C. Müller, 1851

* _Hypnum circinale_ W. J. Hooker, 1819

* 柏狀灰蘚 _Hypnum cupressiforme_ Hedwig, 1801

* _Hypnum curvifolium_ Hedwig, 1801

* _Hypnum deflectens_ Stirton, 1910

* 密枝灰蘚 _Hypnum densirameum_ Ando, 1957

* _Hypnum dieckei_ Renauld & Cardot, 1890,

* _Hypnum eccremocarpum_ C. Müller, 1851

* _Hypnum emodi-fertile_ Brotherus ex Ando, 1973

* 傅氏灰蘚 _Hypnum fauriei_ Cardot, 1904

* _Hypnum fertile_ Sendtner, 1841

* _Hypnum formianum_ (Fiorini-Mazzanti) W. P. Schimper, 1876

* _Hypnum franchetti_ W. P. Schimper ex Bescherelle, 1893

* _Hypnum freuchenianum_ Hornschuch, 1825

* _Hypnum fuegianum_ (Mitten) C. Müller, 1885

* _Hypnum fujiyamae_ Paris, 1900

* _Hypnum gebhardii_ Sprengel, 1807

* _Hypnum gelidum_ (Bryhn) H. A. Möller, 1907

* _Hypnum geminum_ Lesquereux & T. P. James, 1884

* _Hypnum gracilirameum_ C. Müller ex Renauld, 1898

* _Hypnum hampei_ Kindberg, 1888

* _Hypnum hamulosum_ W. P. Schimper in B.S.G., 1854

* _Hypnum hercynicum_ (Milde) Hampe, 1873

* _Hypnum heseleri_ Ando & Higuchi, 1994

* _Hypnum hildebrandtii_ C. Müller, 1876

* _Hypnum holmenii_ Ando, 1994

* _Hypnum imponens_ Hedwig, 1801

* _Hypnum imponentiforme_ Kindberg, 1900

* _Hypnum inflectens_ Bridel, 1812

* _Hypnum intortoplicatum_ Lobarzewski, 1847

* _Hypnum jutlandicum_ Holmen & Warncke in Damsholt, Holmen & Warncke, 1969

* 屈尺灰蘚 _Hypnum kushakuense_ Cardot, 1905

* _Hypnum lamarckii_ Lamarck & A. P. de Candolle, 1805

* _Hypnum lutescens_ (Philibert in Husnot) H. A. Möller, 1907

* 粗雌灰蘚 _Hypnum macrogynum_ Bescherelle, 1892

* _Hypnum moenkemeyeri_ C. Müller, 1886

* _Hypnum mukahivense_ W. P. Schimper in Jardin, 1875

* _Hypnum napoanum_ De Notaris, 1859

* _Hypnum nelsonii_ Paris, 1896

* _Hypnum nervosum_ Palisot de Beauvois, 1818

* _Hypnum obsoletinerve_ Kindberg, 1905

* _Hypnum oldhamii_ Jaeger, 1880

* 黃灰蘚 _Hypnum pallescens_ Palisot de Beauvois, 1805

* _Hypnum patulum_ C. Müller, 1847

* _Hypnum pensilvanicum_ Poiret in Lamarck, 1813

* _Hypnum plicaefolium_ Paris, 1900

* _Hypnum plicatulum_ Jaeger, 1880

* 大灰蘚 _Hypnum plumaeforme_ Wilson, 1848

* _Hypnum pratense_ J. Koch ex Spruce, 1845

* _Hypnum procerrimum_ Molendo, 1866

* _Hypnum pseudosplendens_ Hampe, 1867

* _Hypnum punae_ (C. Müller) Paris, 1900

* _Hypnum radiatum_ Schwaegrichen, 1816

* _Hypnum recurvatum_ Kindberg, 1891

* _Hypnum resupinatum_ Taylor in Spruce, 1849

* _Hypnum revolutum_ Lindberg, 1867 [1866]

* _Hypnum rigidum_ Reinwardt & Hornschuch, 1829

* _Hypnum riparioides_ Hampe, 1870

* _Hypnum rotula_ Schwaegrichen in Gaudichaud in Freycinet, 1828

* _Hypnum rubricaule_ Bridel, 1827

* _Hypnum saitoi_ Ando, 1982

* _Hypnum sakuraii_ Ando, 1958

* _Hypnum sauteri_ W. P. Schimper in Sauter, 1850

* _Hypnum saxetorum_ Mitten, 1859

* _Hypnum schiedeanum_ C. Müller, 1851

* _Hypnum setschwanicum_ Ando, 1973

* _Hypnum sikkimense_ Ando, 1968

* _Hypnum siphotheca_ C. Müller, 1858

* _Hypnum skottsbergii_ Ando in Ando & Matteri, 1982

* _Hypnum speciosum_ C. Müller, 1845

* _Hypnum spegazzinii_ C. Müller, 1885

* _Hypnum subchrysogaster_ Paris, 1900

* 溫帶灰蘚 _Hypnum subimponens_ Lesquereux, 1865

* _Hypnum submolluscum_ Bescherelle, 1892

* _Hypnum subpinnatum_ Hampe, 1881

* _Hypnum subreptile_ Paris, 1900

* _Hypnum thouinii_ Schwaegrichen, 1830

* _Hypnum tristoviride_ Paris, 1900

* _Hypnum uii_ Brotherus ex Iishiba, 1932

* _Hypnum uncinulatum_ Juratzka, 1866

* _Hypnum usagarum_ Mitten, 1886

* _Hypnum vaucheri_ Lesquereux, 1846

* _Hypnum vernicosum_ Hampe, 1836

* _Hypnum wilhelmense_ E. B. Bartram, 1962



參考文獻