| 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 | GB, VC2 East Cornwall, Hensbarrow Downs | Edgar Thurston | | 22/8/1924 | K |
| Thymus | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Botanical Society & Exchange Club of The British Isles Job Edward Lousley | 28/7/1928 | SLBI |
| Thymus | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Edgar Thurston | 24/7/1931 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Botanical Exchange Club of The British Isles | 28/7/1928 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Botanical Exchange Club of The British Isles | 29/7/1928 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Botanical Exchange Club of The British Isles | 29/7/1928 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Botanical Society & Exchange Club of The British Isles Charles Edward Britton | 29/7/1928 | K |
| Thymus serpyllum | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Botanical Exchange Club of The British Isles Job Edward Lousley | 29/7/1928 | SLBI |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Polzeath | Edgar Thurston | | 19/8/1928 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Port Holland | Edgar Thurston | | 24/8/1929 | K |
| Thymus polytrichus | GB, VC2 East Cornwall, Red Down | William Wise | | 23/6/1892 | LAUS |
| Thymus | GB, VC2 East Cornwall, Saint Breock | Edgar Thurston | | 8/7/1924 | K |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Saint Breock | Edgar Thurston | Edgar Thurston | 8/7/1924 | K |
| Thymus polytrichus | GB, VC2 East Cornwall, Tintagel | | | 7/7/1902 | DBC |
| Thymus praecox subsp. arcticus | GB, VC2 East Cornwall, Tintagel | William Thomas Stearn | | 12/9/1950 | K |
| Thymus serpyllum | GB, VC2 East Cornwall, Tintagel | | | 7/7/1902 | DBC |
| Thymus serpyllum | GB, VC2 East Cornwall, Tintagel | | | 7/7/1902 | DBC |
| Thymus serpyllum | GB, VC2 East Cornwall, Tintagel | | | 7/7/1902 | DBC |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Dawlish Warren | Francis Morland Day | | 24/8/1936 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Dawlish Warren | Francis Morland Day | | 24/8/1936 | K |
| Thymus chamaedrys | GB, VC3 South Devon, Haldon | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 8/1847 | BIRM |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Kingskerswell | Thomas Stephenson | | 18/7/1936 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Labrador | M E Edmonds | | 19/8/1932 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Lydford | William Thomas Stearn | | 7/7/1941 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Maidencombe | M E Edmonds | | 21/7/1932 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Newton Abbot | M E Edmonds | | 23/7/1932 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Salcombe Hill | William Bertram Turrill | | 25/6/1957 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Slapton Ley | M E Edmonds | | 16/8/1932 | K |
| Thymus praecox subsp. arcticus | GB, VC3 South Devon, Torquay | Thomas Stephenson | | 7/1936 | K |
| Thymus praecox subsp. arcticus | GB, VC4 North Devon, Braunton Burrows | William Bertram Turrill | | 12/7/1939 | K |
| Thymus praecox subsp. arcticus | GB, VC4 North Devon, Braunton Burrows | William Bertram Turrill | | 12/7/1939 | K |
| Thymus | GB, VC4 North Devon, Hunters Inn | Henry Dixon Hewitt | Benjamin Thompson Lowne jnr | 19/8/1910 | K |
| Thymus praecox subsp. arcticus | GB, VC4 North Devon, Ilfracombe | Clifford Charles Townsend | Clifford Charles Townsend | 21/6/1950 | K |
+ | Thymus polytrichus | GB, VC4 North Devon, Lundy | William Hillhouse | | 26/9/1874 | BIRM |
| Thymus praecox subsp. arcticus | GB, VC4 North Devon, Wilsham | | J Fraser William Charles Barton | 28/8/1917 | K |
| Thymus praecox subsp. arcticus | GB, VC6 North Somerset, Asham Wood | Henry Francois Devis | | 29/6/1916 | K |
| Thymus chamaedrys | GB, VC6 North Somerset, Bathford | Lester Vallis Lester-Garland | Lester Vallis Lester-Garland | 2/8/1925 | K |
| Thymus polytrichus | GB, VC6 North Somerset, Black Down | Harold Stuart Thompson | Harold Stuart Thompson | 6/1917 | BIRM |