Deletions of Plant Entries from British Pharmacopoeias 1885-1993
| Year | Number of deleted entries |
| 1867 | 3 |
| 1885 | 11 |
| 1914 | 104 |
| 1932 | 187 |
| 1948 | 59 |
| 1953 | 56 |
| 1958 | 24 |
| 1963 | 18 |
| 1968 | 7 |
| 1973 | 9 |
| 1980 | 8 |
| 1988 | 21 |
| 1993 | 134 |
| Total 521 entries |
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