3 literature references for Sphagnum laxiramosum H. Crum, 1997:

Author: Brotherus
Year: 1895
Title:
Source: Bih. Kongl. Svenska Vetensk.-Akad. Handl.
Author: Brotherus
Year: 1901
Title:
Source: Nat. Pflanzenfam.
Author: H. Crum
Year: 1997
Title:
Source: Contr. Univ. Michigan Herb.