+ | Elytrigia atherica x juncea = E. x acuta | GB, VC28 West Norfolk, Heacham | Charles Edward Hubbard | | 24/7/1933 | MANCH |
| Melica uniflora | GB, VC24 Buckinghamshire, Fulmer | Charles Edward Hubbard | Royal Botanic Gardens, Kew | 22/5/1938 | MANCH |
| Dactylis glomerata | GB, VC28 West Norfolk, Appleton | Charles Edward Hubbard | John Patrick Micklethwait Brenan | 12/7/1935 | K |
| Veronica anagallis-aquatica | GB, VC23 Oxfordshire, Blenheim Park | Charles Edward Hubbard William Bertram Turrill | Job Edward Lousley | 16/8/1944 | SLBI |
| Plantago major subsp. major | GB, VC17 Surrey, Kew Gardens | Charles Edward Hubbard | | 20/6/1928 | K |
| Veronica catenata | GB, VC23 Oxfordshire, Wolvercote | Arthur Roy Clapham Charles Edward Hubbard | | 19/8/1943 | K |
| Campanula trachelium | GB, VC23 Oxfordshire, Oxford, Yardley Lodge | Charles Edward Hubbard | | 7/1943 | SLBI |
| Dactylis glomerata | GB, VC36 Herefordshire, Mathon, Parkwood | Francis Morland Day | Charles Edward Hubbard | 17/7/1945 | K |
| Dactylis glomerata | GB, VC36 Herefordshire, Colwall | Francis Morland Day | Charles Edward Hubbard | 7/7/1945 | K |
| Dactylis glomerata | GB, VC36 Herefordshire, Colwall | Francis Morland Day | Charles Edward Hubbard | 15/6/1944 | K |
| Phalaris arundinacea | GB, VC36 Herefordshire, Eaton Bishop | Francis Morland Day | Charles Edward Hubbard | 12/6/1945 | K |
| Mentha aquatica | GB, VC28 West Norfolk, Appleton | Charles Edward Hubbard | | 2/8/1933 | K |
| Mentha aquatica | GB, VC28 West Norfolk, Appleton | Charles Edward Hubbard | | 13/9/1944 | K |
| Mentha aquatica | GB, VC28 West Norfolk, Leziate Heath | Charles Edward Hubbard | | 3/8/1933 | K |
| Mentha aquatica | GB, VC28 West Norfolk, Dersingham | Charles Edward Hubbard | | 6/10/1932 | K |
| Mentha aquatica | GB, VC22 Berkshire, Kennington | Charles Edward Hubbard | | 8/1942 | K |
| Mentha aquatica | GB, VC22 Berkshire, Cothill | Charles Edward Hubbard William Bertram Turrill | | 24/8/1944 | K |
| Mentha aquatica | GB, VC22 Berkshire, Cothill | Charles Edward Hubbard | | 30/7/1943 | K |
| Mentha aquatica | GB, VC23 Oxfordshire, Eynsham | Charles Edward Hubbard | | 5/8/1943 | K |
| Mentha aquatica | GB, VC23 Oxfordshire, Woodeaton | Charles Edward Hubbard | | 16/8/1942 | K |
| Mentha aquatica | GB, VC23 Oxfordshire, Islip | Charles Edward Hubbard | | 25/8/1943 | K |
| Mentha aquatica | GB, VC22 Berkshire, Radley | Charles Edward Hubbard | | 12/8/1944 | K |
| Mentha aquatica | GB, VC23 Oxfordshire, Blenheim Park | Charles Edward Hubbard William Bertram Turrill | | 16/8/1944 | K |
| Mentha aquatica | GB, VC23 Oxfordshire, North Leigh | Charles Edward Hubbard | | 30/8/1944 | K |
| Mentha aquatica | GB, VC23 Oxfordshire, Yarnton | Charles Edward Hubbard | | 18/7/1943 | K |
| Mentha aquatica | GB, VC22 Berkshire, Radley | Charles Edward Hubbard | | 12/8/1944 | K |
| Mentha arvensis var. obtusifolia | GB, VC22 Berkshire, Cothill | Charles Edward Hubbard William Bertram Turrill | | 24/8/1944 | K |
| Mentha arvensis | GB, VC23 Oxfordshire, Oxford | Charles Edward Hubbard | | 31/7/1942 | K |
| Mentha arvensis | GB, VC23 Oxfordshire, North Leigh | Charles Edward Hubbard | | 30/8/1944 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC23 Oxfordshire, Binsey | Charles Edward Hubbard | | 25/7/1943 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC33 East Gloucestershire, Hilcot, Colesbourne | Charles Edward Hubbard | | 9/1941 | K |
| Mentha gentilis var. gracilis | GB, VC23 Oxfordshire, Woodstock Cultivated | Charles Edward Hubbard William Bertram Turrill | | 16/8/1944 | K |
| Mentha piperita var. piperita | GB, VC23 Oxfordshire, North Leigh | Charles Edward Hubbard | | 30/8/1944 | K |
| Mentha piperita var. piperita | GB, VC28 West Norfolk, Dersingham | Charles Edward Hubbard | | 13/8/1943 | K |
| Mentha spicata | GB, VC23 Oxfordshire, Oxford | Charles Edward Hubbard | | 16/8/1944 | K |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC28 West Norfolk, Dersingham | Charles Edward Hubbard | | 13/8/1943 | K |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, North Leigh | Charles Edward Hubbard | | 22/9/1944 | K |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, North Leigh | Charles Edward Hubbard | | 22/9/1944 | K |
| Mentha arvensis | GB, VC87 West Perthshire, Loch Lubnaig | Charles Edward Hubbard | | 16/8/1939 | K |
| Mentha arvensis | GB, VC28 West Norfolk, Appleton | Charles Edward Hubbard | | 4/10/1932 | K |