Belongs within: Bryaceae.
The section Eu-Bryum of the genus Bryum includes often tall mosses with rather long, narrow leaves (Dixon 1924).
<==Bryum Hedw. 1801 sect. BryumS04 |--B. subsect. Soliolidium Müll. Hal. 1875S04 | |--*B. argenteum Hedw. 1801SK02, S04 (see below for synonymy) | | |--B. a. var. argenteumD24 | | `--B. a. var. majus [incl. B. perpusillum]D24 | |--B. dichotomum Hedw. 1801S04, SK02 (see below for synonymy) | | |--B. d. var. dichotomumD24 | | `--B. ‘atropurpureum’ var. gracilentum [incl. B. elegantulum]D24 | |--B. dixonii Cardot 1910S04 | |--B. dyffrynenseS04 | |--B. gemmiferum Wilczek & Demaret 1976S04 | `--B. gemmilucens Wilczec & Demaret 1976S04 |--B. subsect. Alpiniformia (Kindb.) Podp 1901S04 [=B. sect. Alpiniformia (Kindb.) Sim. 1926OZB-O03] | |--B. alpinum Huds. ex Withering 1801S04 [incl. B. alpinum var. virideS04] | | |--B. a. var. alpinumD24 | | |--B. a. var. distantifoliumD24 | | `--B. a. var. meridionaleD24 | |--B. bornholmense Wink. & Ruthe 1899S04 | |--B. erythrocarpumS04 | |--B. gemmiparum De Not. 1866S04 | |--B. klinggraeffii Schimp. in Klinggr. 1858S04 [incl. B. macrostomumOZB-O03] | |--B. mildeanum Jur. 1862S04 | |--B. muehlenbeckii Bruch & Schimp. in Bruch, Schimp. & Gümbel 1846S04 [incl. B. cheeliiSK02] | |--B. radiculosum Brid. 1817 [incl. B. murale, B. murorum]S04 | |--B. riparium Hagen 1908S04 | |--B. rubens Mitt. 1856S04 | |--B. ruderale Crundwell & Nyholm 1963S04 | |--B. sauteri Bruch & Schimp. in Bruch et al. 1846S04 | |--B. subapiculatum Hampe 1872S04 (see below for synonymy) | |--B. tenuisetum Limpr. 1897S04 [incl. B. pachydermumOZB-O03] | `--B. violaceum Crundwell & Nyholm 1963S04 |--B. subsect. Caespitibryum Podp. 1901S04 | |--B. caespiticium Hedw. 1801S04 [=B. cespiticium (l. c.)SK02, Hypnum caespiticiumOZB-O03] | | |--B. c. var. caespiticium [incl. B. laxirete (preoc.)]SK02 | | `--B. c. var. crinitum Wilson 1859SK02 | `--B. funkii Schwägr. 1816S04 (see below for synonymy) |--B. subsect. Penduliformia (Kindb.) Podp. 1950S04 | |--B. algovicum Sendtn. ex Müll.Hal. 1851S04, SK02 (see below for synonymy) | | |--B. a. var. algovicumS04 | | `--B. a. var. rutheanum (Warnst.) Crundw. 1970 [incl. B. angustirete, B. pendulum, B. roellii]S04 | |--B. archangelicum Bruch & Schimp. in Bruch et al. 1846S04 | |--B. imbricatum (Schwägr.) Bruch & Schimp. in Bruch et al. 1839S04 (see below for synonymy) | |--B. intermedium (Brid.) Blandow 1809S04 (see below for synonymy) | |--B. knowltonii Barnes 1889S04 (see below for synonymy) | `--B. salinum Hagen ex Limpr. 1892S04 (see below for synonymy) `--B. subsect. Pseudotriquetra Broth. 1903S04 |--B. bimum (Schreb.) Turner 1804S04 [=B. pseudotriquetrum var. bimum (Schreb.) Lilj. 1816OZB-O03] |--B. creberrimum Taylor 1845S04 (see below for synonymy) |--B. neodamense Itzigs in Müll. Hal. 1849S04 [incl. B. pseudotriquetrum var. cavifoliumOZB-O03] |--B. pallescens Schleich. ex Schwägr. 1816S04 (see below for synonymy) `--B. pseudotriquetrum (Hedw.) Gaertn. et al. 1802S04 (see below for synonymy)
Bryum algovicum Sendtn. ex Müll.Hal. 1851S04, SK02 [incl. B. pendulum var. compactumOZB-O03, B. angustirete var. ruppinenseOZB-O03, B. algovicum var. spadiceumOZB-O03]
*Bryum argenteum Hedw. 1801SK02, S04 [=Hypnum argenteumOZB-O03; incl. B. amblyolepisSK02, B. amblophyllum (nom. inv.)SK02, B. austroargenteum (n. n.)SK02, B. hampeanum (n. n.)SK02, Anomobryum lanatum (Palisot de Beauvois) Spence & Ramsay 2002SK02, B. argenteum var. lanatum (Palisot de Beauvois) Hampe 1839S04, SK02, B. lanatum (Palisot de Beauvois) Brid. 1817SK02, Mnium lanatumD24, B. leucophyllum Dozy & Molk. 1844SK02, B. argenteum var. niveum Wilson 1859SK02, B. parasemumD24]
Bryum creberrimum Taylor 1845S04 [incl. B. affineS04, Webera affinisD24, B. lisae var. cuspidatumSK02, OZB-O03, B. intermedium var. fuscumOZB-O03, B. lisae var. fuscumOZB-O03, B. lisaeS04]
Bryum dichotomum Hedw. 1801S04, SK02 [incl. B. aequicollumSK02, B. annulatumSK02, B. argillicolaSK02, B. atropurpureumS04, B. barnesiiS04, B. brachytheciellaSK02, B. dunenseS04, B. philonotoideumSK02, B. pimpanaeSK02, B. subcupulatumSK02, B. versicolorS04]
Bryum funkii Schwägr. 1816S04 [=B. funckii (l. c.)S04; incl. B. caespiticium var. imbricatum Bruch & Schimp. in Bruch, Schimp. & Gümbel 1839 non B. imbricatum (Schwägr.) Bruch & Schimp. in Bruch et al. 1839S04, OZB-O03, B. caespiticium var. kunzeiD24]
Bryum imbricatum (Schwägr.) Bruch & Schimp. in Bruch et al. 1839S04 [incl. B. amblyodon Müll.Hal. 1879S04, SK02, B. stenotrichum var. anomalumOZB-O03, B. inclinatumS04, Cladodium inclinatumOZB-O03, Pohlia inclinataD24, Bryum stenotrichumS04]
Bryum intermedium (Brid.) Blandow 1809S04 [=Webera intermediaOZB-O03; incl. B. intermedium var. crassicollumOZB-O03, B. intermedium var. limprichtiiOZB-O03, B. intermedium var. longicollumOZB-O03, B. intermedium var. subcylindricumOZB-O03]
Bryum knowltonii Barnes 1889S04 [incl. B. knowltonii var. ammophilumOZB-O03, B. lacustreS04, Hypnum lacustreOZB-O03, Mnium lacustreD24, Pohlia lacustrisOZB-O03, Webera lacustrisOZB-O03, Bryum knowltonii var. planioperculatumOZB-O03]
Bryum pallescens Schleich. ex Schwägr. 1816S04 [incl. B. affine var. cirratumD24, B. pallescens var. cirratumOZB-O03, B. pallescens var. contextumOZB-O03, B. lonchocaulonOZB-O03, B. capillare var. obconicumD24, S04, Pohlia paradoxaOZB-O03, B. pallescens var. subrotundumOZB-O03]
Bryum pseudotriquetrum (Hedw.) Gaertn. et al. 1802S04 [=Mnium pseudotriquetrumOZB-O03; incl. B. austroaffineSK02, B. pseudotriquetrum var. compactum non B. pendulum var. compactumD24, B. ventricosum var. compactumOZB-O03, B. ventricosum var. duvalioidesOZB-O03, B. ventricosum var. gracilescensOZB-O03, B. intortulumD24, B. rubiginosumSK02, B. subventricosumSK02, B. tasmanicumSK02, B. ventricosum (nom. illeg.)SK02]
Bryum salinum Hagen ex Limpr. 1892S04 [incl. B. fissum Ruthe 1897OZB-O03, B. stenotrichum var. fissum (Ruthe) Ochyra & Szmajda 1978OZB-O03]
Bryum subapiculatum Hampe 1872S04 [incl. B. caespiticioidesSK02, B. microerythrocarpumS04, B. sanguineumOZB-O03, B. tryoniiSK02]
*Type species of generic name indicated
References
[D24] Dixon, H. N. 1924. The Student’s Handbook of British Mosses 3rd ed. V. V. Sumfield: Eastbourne.
[OZB-O03] Ochyra, R., J. Żarnowiec & H. Bednarek-Ochyra. 2003. Census Catalogue of Polish Mosses. Institute of Botany, Polish Academy of Sciences: Cracow.
[S04] Smith, A. J. E. 2004. The Moss Flora of Britain and Ireland 2nd ed. Cambridge University Press.
[SK02] Streimann, H., & N. Klazenga. 2002. Catalogue of Australian Mosses. Flora of Australia Supplementary Series 17. Australian Biological Resources Study: Canberra.