Orthotrichum psilocarpum James = Orthotrichum pusillum Mitt. see D. H. Vitt A Revision of the Genus Orthotrichum in North America, North of Mexico 1973 pp.185-186 and Anderson et al The Bryologist 93:489 1990
Mrs.Thomas A. Williams
17
1892-01-26
26 Jan 1892
United States of America, Missouri, Fish Lake, E. of St. Louis