3 literature references for Sphagnum nitidum Warnstorf, 1895:

Author: Anderson, L. E.
Year: 1990
Title: A checklist of ~Sphagnum~ in North America north of Mexico
Source: Bryologist
Author: Crosby, M. R. and others - INSUFFICIENT
Year: 1999
Title: INSUFFICIENTLY known because not REVISED since its pre-1963 publication; that is to say we have no more information about the species than Index Muscorum; merely relisted without additional specimens in a checklist since 1963; may have been treated in
Source: Checklist Mosses
Author: Warnstorf
Year: 1895
Source: Allg. Bot. Z. Syst.