5 literature references for Didymodon umbrosus Zander, 1978:

Author: Jaeger
Year: 1872
Title:
Source: Ber. Thatigk. St. Gallischen Naturwiss. Ges.
Author: Crosby, M. R. and others - REVISED
Year: 1999
Title: REVISED: accepted in a monograph, revision, or descriptive flora since 1963
Source: Checklist Mosses
Author: Zander, R. H.
Year: 1999
Title: A new species of ~Didymodon~ (Bryopsida) from western North America and a regional key to the taxa
Source: Bryologist
Author: Hampe
Year: 1869
Title:
Source: Bot. Zeitung (Berlin)
Author: Zander
Year: 1978
Title:
Source: Phytologia