Brachytheciaceae FH: 00787725 Brachythecium laetum (Bridel) Bruch, Schimper & W. Gümbel USA: Maine Lisbon: [data not captured] B. H. Allen 26880 2004-6
FH: 00787726 Brachythecium laetum (Bridel) Bruch, Schimper & W. Gümbel USA: Maine [data not captured] R. M. King & R. M. Garvey B863 2005-10-12
NEBC: 00897229 Brachythecium laetum (Bridel) Bruch, Schimper & W. Gümbel USA: Maine Auburn: [no additional data] E. D. Merrill 102 1898-4
NEBC: 01144028 Brachythecium laetum (Bridel) Bruch, Schimper & W. Gümbel USA: Maine Cumberland: White Brook E. B. Chamberlain 2743 1905-9-9
FH: 01142877 Brachythecium laetum (Bridel) Bruch, Schimper & W. Gümbel USA: Maine Rockport: Simonton Quarry Preserve. Along Ma... B. H. Allen 29194 2009-6-20
FH: 01142878 Brachythecium laetum (Bridel) Bruch, Schimper & W. Gümbel USA: Maine Rockport: Simonton Quarry Preserve. Along Ma... B. H. Allen 29267 2009-8-14
NEBC: 00515935 Brachythecium laetum (Bridel) Bruch, Schimper & W. Gümbel USA: Massachusetts Stoneham: Bear Hill, Middlesex Fells [Reserv... M. L. Stevens 1896-11-9
FH: 00059118 Brachythecium laetum pseudo-acuminatum Renauld & Cardot USA: Indiana Hobart J. Röll 1869
FH: 00059119 Brachythecium laetum roellii Renauld & Cardot USA: Indiana Hobart, Calumet River J. Röll 1897
FH: 00059117 Brachythecium laetum fallax Renauld & Cardot USA: Indiana Hobart, Calumet River J. Röll 1896
