The following names have already been used within the genus and therefore cannot be re-used. This list is not in strict alphabetical order but is sorted including spaces, full stops etc. in row order. To look at other names click on the appropriate first letter.
| J. Backhouse | J. C. Fletcher | J. H. Brummage | J. H. Brunnage |
| J. W. Porter | J. W. Potter | Jack Craig | Jack H. Brummage |
| Jack London | Jack Stitt | Jacqueline | Jadah |
| James Backhouse | James Blackhouse | James Macluskey | James McCluskey |
| James Smith | Janet | Janet Warrilow | Janne |
| Janshen | January Sun | Jas Backhouse | Jason Attwater |
| Jean | Jean Julian | Jean Liddle | Jennifer Anne |
| Jennie Nimlin | Jenny Porter | Jersey Wonder | Jim Hardy |
| Jiri | Joan Arden | Joan Graham | Johannes Apel |
| Johann's Gift | John Ardron | John Bone | John Eason |
| John Kampa | John McLaren | John Pook | John Tucker |
| John Wyane | John Wynne | Joker | Jos' Creeping |
| Jos' Golden | Jos' Honeymoon | Jos Smith | Joseph Murphy |
| Joseph Rock | Joseph Ross | Josephine Murphy | Josephine Ross |
| Josephine Smith | Joyce Burfitt | Jubilee | Juliana |
© The Heather Society, 13 January 2007