| 
                                    Psathyrella hydrophila (Bull.) Maire
                                 | 
                                A. Arnheim 14538 | 
                                07 Oct 1948 | 
                                United States of America | 
                                Pennsylvania | 
                                Allegheny Co. McCandless Twp., Highland… | 
                                — | 
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                                | 
                                    Psathyrella incerta (Peck) A.H.Sm.
                                 | 
                                A. Curtis  | 
                                Jul 1958 | 
                                United States of America | 
                                New York | 
                                Bronx Co. 2546 Howe Ave. | 
                                — | 
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                                | 
                                    Psathyrella carbonicola A.H.Sm.
                                 | 
                                A. H. Smith F660 | 
                                26 Jul 1953 | 
                                United States of America | 
                                Michigan | 
                                Emmet Co. | 
                                — | 
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                                | 
                                    Psathyrella carbonaria Velen.
                                 | 
                                A. H. Smith HEB1094 | 
                                26 Jul 1953 | 
                                United States of America | 
                                Michigan | 
                                Emmet Co. | 
                                — | 
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                                | 
                                    Psathyrella hydrophila (Bull.) Maire
                                 | 
                                A. H. Smith HEB3 | 
                                09 Oct 1951 | 
                                United States of America | 
                                Michigan | 
                                Washtenaw Co. Mud Lake Bog,… | 
                                — | 
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                                | 
                                    Psathyrella polycephala (Fr.) A.H.Sm.
                                 | 
                                A. H. Smith HEB4 | 
                                23 Sep 1951 | 
                                United States of America | 
                                Michigan | 
                                Oakland Co. Haven Hill. | 
                                — | 
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                                | 
                                    Psathyrella appendiculata (Bull.) G.Bertrand
                                 | 
                                A. J. McClatchie  | 
                                13 Jan 1895 | 
                                United States of America | 
                                California | 
                                Los Angeles Co. | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. L. Welden 2866 | 
                                5 Sep 1966 | 
                                United States of America | 
                                Louisiana | 
                                Orleans Parish. Tulane University Campus | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. L. Welden 2867 | 
                                5 Sep 1966 | 
                                United States of America | 
                                Louisiana | 
                                Orleans Parish. Tulane University Campus | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. L. Welden 2868 | 
                                5 Sep 1966 | 
                                United States of America | 
                                Louisiana | 
                                Orleans Parish. Tulane University Campus | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. L. Welden 2869 | 
                                12 Sep 1966 | 
                                United States of America | 
                                Louisiana | 
                                Orleans Parish. Tulane University Campus | 
                                — | 
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                                | 
                                    Psathyrella foenisecii (Pers.) G.Bertrand
                                 | 
                                A. L. Welden s.n. | 
                                Aug 1968 | 
                                United States of America | 
                                Louisiana | 
                                Orleans Parish. | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. L. Welden s.n. | 
                                Aug 1968 | 
                                United States of America | 
                                Louisiana | 
                                Orleans Parish. | 
                                — | 
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                                | 
                                    Psathyrella hydrophila (Bull.:Fr.) Maire
                                 | 
                                A. Merijanian  | 
                                1973 | 
                                United States of America | 
                                New Jersey | 
                                Campus, Paterson State College, Wayne | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. Pilát  | 
                                04 Aug 1970 | 
                                Slovakia | 
                                — | 
                                montes Pohronsky Inovec, mons Vcelar,… | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. S. Hitchcock  | 
                                12 May 1894 | 
                                United States of America | 
                                Kansas | 
                                Riley Co. Wildcat Creek | 
                                — | 
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                                | 
                                    Psathyrella incerta (Peck) A.H.Sm.
                                 | 
                                A. S. Rhoades s.n. | 
                                06 Aug 1915 | 
                                United States of America | 
                                Pennsylvania | 
                                Centre Co. | 
                                — | 
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                                | 
                                    Psathyrella candolleana (Fr.:Fr.) Maire
                                 | 
                                A. S. Rhoads probably L.O. Overholts No.2986 | 
                                03 Sep 1915 | 
                                United States of America | 
                                Pennsylvania | 
                                Centre Co. | 
                                — | 
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                                | 
                                    Psathyrella subtilis Fr.
                                 | 
                                A. W. Eichler  | 
                                — | 
                                Italy | 
                                Trentino-Alto Adige | 
                                Trento | 
                                — | 
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                                | 
                                    Psathyrella lacrymabunda (Bull.:Fr.) M.M.Moser
                                 | 
                                B. Isaacs 2092 | 
                                16 Jun 1963 | 
                                United States of America | 
                                New York | 
                                Bronx Co. The New York… | 
                                — | 
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                                | 
                                    Psathyrella velutina (Pers.) Singer
                                 | 
                                B. Lloyd  | 
                                15 Sep 1957 | 
                                United States of America | 
                                New Jersey | 
                                Smoke Rise, 14 mi. SSW… | 
                                — | 
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                                | 
                                    Psathyrella echiniceps (Atk.) A.H.Sm.
                                 | 
                                B. M. Thiers HEB17041 | 
                                11 Dec 1971 | 
                                United States of America | 
                                California | 
                                Mendocino Co. Jackson State Forest | 
                                — | 
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                                | 
                                    Psathyrella rugocephala (Atk.) A.H.Sm.
                                 | 
                                B. O. Dodge 703 | 
                                1909 | 
                                United States of America | 
                                New Jersey | 
                                Bergen Co. | 
                                — | 
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                                | 
                                    Psathyrella storea (Fr.) Romagn.
                                 | 
                                B. O. Dodge  | 
                                1910 | 
                                United States of America | 
                                Virginia | 
                                Clarke Co. | 
                                — | 
                                 | 
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                                | 
                                    Psathyrella lacrymabunda (Fr.) M.M.Moser
                                 | 
                                B. O. Dodge  | 
                                30 Sep 1958 | 
                                United States of America | 
                                New York | 
                                Bronx Co. Near Laboratory Bldg.,… | 
                                — | 
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