4 literature references for Ectropothecium duemmeri Dixon, 1918:

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: Dixon
Year: 1918
Title:
Source: Smithsonian Misc. Collect.
Author: Dixon, H. N.
Year: 1918
Title: Uganda mosses collected by R. Duemmer and others
Source: Smithsonian Misc. Collect.
Author: A. J. E. Smith
Year: 1992
Title:
Source: J. Bryol.