| Rank |
Taxon |
 |
 |
 |
 |
 |
 |
 |
| Species |
Psathyrella ammophila (Durieu & Lév.) P.D. Orton, 1960 (Dune Brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella artemisiae (Pass.) Konrad & Maubl., 1949 (Petticoat Brittlestem) |
2 |
|
|
|
|
|
3 |
| Species |
Psathyrella atrolaminata Kits van Wav., 1981 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella bipellis (Quél.) A.H. Sm., 1946 (a brittlestem) |
|
5 |
1 |
10 |
|
|
|
| Species |
Psathyrella borgensis Kits van Wav., 1987 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella candolleana (Fr.) G. Bertrand, 1913 (Pale Brittlestem) |
|
22 |
|
13 |
|
2 |
2 |
| Species |
Psathyrella canoceps (Kauffman) A.H. Sm., 1941 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella caput-medusae (Fr.) Konrad & Maubl., 1948 (Medusa Brittlestem) |
|
|
|
|
|
|
6 |
| Aggregate |
Psathyrella cernua/olympiana |
2 |
5 |
|
|
|
|
4 |
| Species |
Psathyrella chondroderma (Berk. & Broome) A.H. Sm., 1941 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella clivensis (Berk. & Broome) P.D. Orton, 1960 (a brittlestem) |
|
7 |
|
11 |
|
|
1 |
| Species |
Psathyrella conopilus (Fr.) A. Pearson & Dennis, 1948 (Conical Brittlestem) |
|
7 |
|
|
|
|
14 |
| Species |
Psathyrella coprophila Watling, 1971 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella corrugis (Pers.) Konrad & Maubl., 1948 (Red Edge Brittlestem) |
|
18 |
|
10 |
|
|
4 |
| Species |
Psathyrella cotonea (Quél.) Konrad & Maubl., 1948 (Yellowfoot Brittlestem) |
|
|
|
|
|
|
18 |
| Species |
Psathyrella dunensis Kits van Wav., 1985 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella fatua (Fr.) Konrad & Maubl., 1948 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella flexispora T.J. Wallace & P.D. Orton, 1960 (a brittlestem) |
|
|
|
|
|
|
4 |
| Species |
Psathyrella friesii Kits van Wav., 1977 (a brittlestem) |
|
5 |
|
|
5 |
|
2 |
| Species |
Psathyrella frustulenta (Fr.) A.H. Sm., 1941 (a brittlestem) |
|
|
|
|
|
|
9 |
| Species |
Psathyrella fulvescens (Romagn.) A.H. Sm., 1972 (a brittlestem) |
2 |
|
|
|
|
|
2 |
| Species |
Psathyrella fusca (Schumach.) A. Pearson, 1952 (a brittlestem) |
|
4 |
|
|
|
|
1 |
| Species |
Psathyrella gossypina (Bull.) A. Pearson & Dennis, 1948 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella hirta Peck, 1897 (a brittlestem) |
|
4 |
|
|
|
|
2 |
| Species |
Psathyrella laevissima (Romagn.) Singer, 1969 (a brittlestem) |
|
|
|
|
|
|
12 |
| Species |
Psathyrella leucotephra (Berk. & Broome) G. Bertrand, 1913 (a brittlestem) |
|
|
|
|
|
|
7 |
| Species |
Psathyrella lutensis (Romagn.) M.M. Moser ex Bon, 1983 (a brittlestem) |
|
16 |
|
|
|
|
7 |
| Species |
Psathyrella maculata (C.S. Parker) A.H. Sm., 1972 (a brittlestem) |
|
10 |
|
|
|
|
4 |
| Species |
Psathyrella marcescibilis (Britzelm.) Singer, 1951 (a brittlestem) |
|
7 |
|
|
|
|
1 |
| Species |
Psathyrella microrrhiza (Lasch) Konrad & Maubl., 1948 (Rootlet Brittlestem) |
|
12 |
|
|
|
|
2 |
| Species |
Psathyrella mucrocystis A.H. Sm., 1972 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella multipedata (Peck) A.H. Sm., 1941 (Clustered Brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella murcida (Fr.) Kits van Wav., 1985 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella narcotica Kits van Wav., 1971 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella noli-tangere (Fr.) A. Pearson & Dennis, 1948 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella obtusata (Pers.) A.H. Sm., 1941 (a brittlestem) |
2 |
|
|
|
|
|
4 |
| Species |
Psathyrella ocellata (Romagn.) M.M. Moser, 1967 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella panaeoloides (Maire) M.M. Moser, 1967 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella pannucioides (J.E. Lange) M.M. Moser, 1967 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella pellucidipes (Romagn.) M.M. Moser, 1978 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella pennata (Fr.) Konrad & Maubl., 1948 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella phegophila Romagn., 1985 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella piluliformis (Bull.) P.D. Orton, 1969 (Common Stump Brittlestem) |
|
10 |
|
|
|
|
10 |
| Species |
Psathyrella ploddensis Kits van Wav., 1987 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella polycystis (Romagn.) Kits van Wav., 1976 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella populina (Britzelm.) Kits van Wav., 1985 (a brittlestem) |
|
|
|
|
|
|
4 |
| Species |
Psathyrella prona (Fr.) Gillet, 1878 (a brittlestem) |
3 |
12 |
|
|
|
|
4 |
| Species |
Psathyrella pseudocasca (Romagn.) Kits van Wav., 1982 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella pseudocorrugis (Romagn.) Bon, 1983 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella pseudogordonii Kits van Wav., 1985 (a brittlestem) |
|
|
|
|
|
|
3 |
| Species |
Psathyrella pseudogracilis (Romagn.) M.M. Moser, 1967 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella pygmaea (Bull.) Singer, 1951 (a brittlestem) |
|
8 |
|
|
|
|
3 |
| Species |
Psathyrella rostellata Orstadius, 1986 (a brittlestem) |
|
|
|
|
|
|
8 |
| Species |
Psathyrella sacchariolens Enderle, 1984 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella sarcocephala (Fr.) G. Bertrand, 1913 (a brittlestem) |
|
|
|
|
|
|
3 |
| Species |
Psathyrella solitaria (P. Karst.) Orstadius & Huhtinen, 1996 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella spadicea (Schaeff.) Singer, 1951 (Chestnut Brittlestem) |
|
|
|
|
|
|
3 |
| Species |
Psathyrella spadiceogrisea (Schaeff.) G. Bertrand, 1913 (Spring Brittlestem) |
|
10 |
|
6 |
|
|
2 |
| Species |
Psathyrella sphaerocystis P.D. Orton, 1964 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella sphagnicola (Maire) J. Favre, 1937 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella spintrigeroides P.D. Orton, 1960 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella stercoraria (Kühner & Joss.) Park.-Rhodes, 1954 (a brittlestem) |
|
|
|
|
|
|
2 |
| Species |
Psathyrella tephrophylla (Romagn.) M.M. Moser ex Bon, 1983 (a brittlestem) |
|
4 |
|
|
|
|
2 |
| Species |
Psathyrella typhae (Kalchbr.) A. Pearson & Dennis, 1948 (a brittlestem) |
|
|
|
|
|
|
10 |
| Species |
Psathyrella vinosofulva P.D. Orton, 1960 (a brittlestem) |
|
|
|
|
|
|
1 |
| Species |
Psathyrella vyrnwyensis Kits van Wav., 1987 (a brittlestem) |
|
|
|
|
|
|
1 |
| Informal |
(Psathyrella corrugis agg.) |
3 |
30 |
|
10 |
|
|
7 |