| Thymus praecox subsp. arcticus | IE, VCH39 Co. Antrim, Ballycastle | Marian Muriel Whiting | | 20/6/1930 | K |
| Thymus praecox subsp. arcticus | IE, VCH40 Co. Londonderry, Castlerock | Marian Muriel Whiting | | 21/6/1930 | K |
| Thymus praecox subsp. arcticus | IE, VCH40 Co. Londonderry, Mount Benevenagh | Marian Muriel Whiting | | 26/6/1930 | K |
| Thymus praecox subsp. arcticus | GB, VC59 South Lancashire, Hightown | James Alfred Wheldon | Charles Edward Britton James Alfred Wheldon | 15/7/1911 | K |
| Thymus praecox subsp. arcticus | GB, VC41 Glamorganshire, Barry Island | Arthur Edward Wade | Botanical Exchange Club of The British Isles Charles Edward Britton | 7/1920 | K |
| Thymus praecox subsp. arcticus | GB, VC41 Glamorganshire, Barry, Cold Knap | Arthur Edward Wade | Botanical Exchange Club of The British Isles Charles Edward Britton | 7/1920 | K |
| Thymus praecox subsp. arcticus | GB, VC41 Glamorganshire, Caerphilly | Arthur Edward Wade | Botanical Exchange Club of The British Isles Charles Edward Britton | 7/1920 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Salcombe Hill | William Bertram Turrill | | 25/6/1957 | K |
| Thymus praecox subsp. arcticus | GB, VC8 South Wiltshire, Salisbury Plain | William Bertram Turrill | | 14/6/1926 | K |
| Thymus praecox subsp. arcticus | GB, VC9 Dorset, Burton Bradstock | William Bertram Turrill | | 30/7/1935 | K |
| Thymus praecox subsp. arcticus | GB, VC11 South Hampshire, Milford | William Bertram Turrill | | 21/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC11 South Hampshire, Milford on Sea | William Bertram Turrill | | 20/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC11 South Hampshire, Milford on Sea | William Bertram Turrill | | 20/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC11 South Hampshire, Milford on Sea | William Bertram Turrill | | 20/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC11 South Hampshire, Milford on Sea | William Bertram Turrill | | 21/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC11 South Hampshire, Milford on Sea | William Bertram Turrill | | 21/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC104 North Ebudes, Skye | J H Turner | | 22/8/1931 | K |
| Thymus praecox subsp. arcticus | GB, VC4 North Devon, Ilfracombe | Clifford Charles Townsend | Clifford Charles Townsend | 21/6/1950 | K |
| Thymus praecox subsp. arcticus | GB, VC26 West Suffolk, Kentford | Clifford Charles Townsend | Clifford Charles Townsend | 16/8/1956 | K |
| Thymus praecox subsp. arcticus | GB, VC33 East Gloucestershire, Cheltenham,Leckhampton Hill | Clifford Charles Townsend | Clifford Charles Townsend | 17/7/1948 | K |
| Thymus praecox subsp. arcticus | GB, VC33 East Gloucestershire, Cleeve Hill | Clifford Charles Townsend | Clifford Charles Townsend | 6/7/1946 | K |
| Thymus praecox subsp. arcticus | GB, Gloucestershire, Sapperton | Clifford Charles Townsend | | 23/8/1947 | K |
| Thymus praecox subsp. arcticus | GB, VC62,VC64, River Swale | Clifford Charles Townsend | Clifford Charles Townsend | 8/7/1943 | K |
| Thymus praecox subsp. arcticus | GB, VC65 North-west Yorkshire, Muker | G Roberts | Clifford Charles Townsend | 5/7/1943 | K |
| Thymus praecox subsp. arcticus | GB, VC1 West Cornwall, Lelant | Edgar Thurston | Edgar Thurston | 1912 | K |
| Thymus praecox subsp. arcticus | GB, VC1 West Cornwall, Newquay | Edgar Thurston | | 19/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC1 West Cornwall, Newquay, Fistral Beach | Edgar Thurston | Edgar Thurston | 19/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC1 West Cornwall, Perranporth | Edgar Thurston | Edgar Thurston | 23/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Gerrans | Edgar Thurston | Edgar Thurston | 8/7/1913 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Hensbarrow Down | Edgar Thurston | | 22/8/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Polzeath | Edgar Thurston | | 19/8/1928 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Saint Breock | Edgar Thurston | Edgar Thurston | 8/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Tintagel | William Thomas Stearn | | 12/9/1950 | K |
| Thymus praecox subsp. arcticus | GB, VC17 Surrey, Leatherhead | John Eustace Sirett Souster | | 11/7/1898 | K |
| Thymus praecox subsp. arcticus | GB, VC82 East Lothian, Longniddry | Noel James Gillies Smith | | 6/1921 | K |
| Thymus praecox subsp. arcticus | GB, VC87 West Perthshire, Callander | Noel James Gillies Smith | | 7/1921 | K |
| Thymus praecox subsp. arcticus | GB, VC17 Surrey, Buckland | Charles Edgar Salmon | Charles Edgar Salmon | 27/8/1910 | K |
| Thymus praecox subsp. arcticus | IE, VCH9 Co. Clare, Ballyvaughan | Joseph Robert Sealy Stella Ross-Craig | | 22/7/1946 | K |
| Thymus praecox subsp. arcticus | IE, VCH29 Co. Leitrim, Manorhamilton | Joseph Robert Sealy Stella Ross-Craig | | 7/7/1946 | K |
| Thymus praecox subsp. arcticus | GB, VC1 West Cornwall, Callestick | Francis Rilstone | | 29/8/1924 | K |