| Scutellaria galericulata | GB, VC33 East Gloucestershire, Bourton on the Water | Edgar Wolston Bertram Handsley Milne-Redhead Victor Samuel Summerhayes | | 11/7/1931 | K |
| Herminium monorchis | GB, VC33 East Gloucestershire, Painswick | Edgar Wolston Bertram Handsley Milne-Redhead Victor Samuel Summerhayes | | 11/7/1931 | K |
| Thymus chamaedrys | GB, VC6 North Somerset, Mendip Hills | Victor Samuel Summerhayes | | 7/1913 | K |
| Thymus praecox subsp. arcticus | GB, VC6 North Somerset, Polden Hills | Victor Samuel Summerhayes | | 18/7/1915 | K |
| Thymus chamaedrys | GB, VC24 Buckinghamshire, Fingest | Victor Samuel Summerhayes | | 11/8/1946 | K |
| Thymus praecox subsp. arcticus | GB, VC47 Montgomeryshire, Abermule | Victor Samuel Summerhayes | | 3/7/1955 | K |
| Thymus praecox subsp. arcticus | GB, VC49 Caernarvonshire, Capel Curig | Victor Samuel Summerhayes | | 20/7/1947 | K |
| Callitriche stagnalis | GB, VC6 North Somerset, Street | Victor Samuel Summerhayes | | 9/7/1928 | K |
| Callitriche platycarpa | GB, VC47 Montgomeryshire, Waen-y-pant | Victor Samuel Summerhayes | | 5/7/1955 | K |
| Veronica scutellata | GB, VC17 Surrey, Richmond Park | Herbert Kenneth Airy Shaw Noel Yvri Sandwith Victor Samuel Summerhayes | | 17/7/1930 | K |
| Callitriche stagnalis | GB, VC17 Surrey, Richmond Park | Herbert Kenneth Airy Shaw Noel Yvri Sandwith Victor Samuel Summerhayes | | 17/7/1930 | K |
| Scrophularia auriculata | GB, VC17 Surrey, Richmond Park | Herbert Kenneth Airy Shaw Noel Yvri Sandwith Victor Samuel Summerhayes | | 17/7/1930 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Richmond Park | Herbert Kenneth Airy Shaw Noel Yvri Sandwith Victor Samuel Summerhayes | | 17/7/1930 | K |
| Melittis melissophyllum | GB, VC2 East Cornwall, Polbathick | Victor Samuel Summerhayes | | 5/1917 | K |
| Veronica arvensis | GB, VC2 East Cornwall, Whitsand Bay | Victor Samuel Summerhayes | | 5/1917 | K |
| Galeopsis angustifolia | GB, VC2 East Cornwall, Whitsand Bay | Victor Samuel Summerhayes | | 5/1917 | K |
| Orchis morio | GB, VC3 South Devon, Babbacombe | Victor Samuel Summerhayes | | 1/6/1962 | K |
| Linaria repens | GB, VC3 South Devon, Sidmouth | Victor Samuel Summerhayes | | 25/6/1965 | K |
| Melittis melissophyllum | GB, VC4 North Devon, Chittlehamholt | Victor Samuel Summerhayes | | 2/6/1959 | K |
| Veronica montana | GB, Devon, Devon,Exe Valley | Victor Samuel Summerhayes | | 26/5/1956 | K |
| Clinopodium ascendens | GB, VC6 North Somerset, Brean Down | Victor Samuel Summerhayes | | 9/8/1915 | K |
| Marrubium vulgare | GB, VC6 North Somerset, Brean Down | Victor Samuel Summerhayes | | 9/8/1915 | K |
| Chaenorhinum minus | GB, VC6 North Somerset, Bruton | Victor Samuel Summerhayes | | 5/1913 | K |
| Veronica officinalis | GB, VC6 North Somerset, Bruton | Victor Samuel Summerhayes | | 5/1913 | K |
| Veronica chamaedrys | GB, VC6 North Somerset, Bruton | Victor Samuel Summerhayes | | 6/1913 | K |
| Ajuga reptans | GB, VC6 North Somerset, Bruton | Victor Samuel Summerhayes | | 6/1913 | K |
| Hordeum marinum | GB, VC6 North Somerset, Burnham-on-Sea | Victor Samuel Summerhayes | | 10/7/1927 | K |
| Festuca arundinacea | GB, VC6 North Somerset, Burnham-on-Sea | Victor Samuel Summerhayes | | 22/7/1928 | K |
| Festuca arundinacea | GB, VC6 North Somerset, Burnham-on-Sea | Victor Samuel Summerhayes | | 22/7/1928 | K |
| Plantago lanceolata var. anthoviridis | GB, VC6 North Somerset, Burnham-on-Sea | Victor Samuel Summerhayes | | 22/5/1949 | K |
| Plantago lanceolata var. anthoviridis | GB, VC6 North Somerset, Burnham-on-Sea | Victor Samuel Summerhayes | | 22/5/1949 | K |
| Veronica filiformis | GB, VC6 North Somerset, Butleigh Wootton | Victor Samuel Summerhayes | | 24/6/1946 | K |
| Antirrhinum majus | GB, VC6 North Somerset, Cheddar Gorge | Victor Samuel Summerhayes | | 8/1913 | K |
| Clinopodium ascendens | GB, VC6 North Somerset, Ebbor Gorge | Victor Samuel Summerhayes | | 21/9/1915 | K |
| Stellaria palustris | GB, VC6 North Somerset, Edington | Victor Samuel Summerhayes | | 14/8/1920 | K |
| Lamium album | GB, VC6 North Somerset, Glastonbury | Victor Samuel Summerhayes | | 22/4/1936 | K |
| Callitriche obtusangula | GB, VC6 North Somerset, Glastonbury | Victor Samuel Summerhayes | | 27/5/1956 | K |
| Mentha arvensis | GB, VC6 North Somerset, Glastonbury | Victor Samuel Summerhayes | | 13/8/1957 | K |
| Festuca arundinacea | GB, VC6 North Somerset, Ivy Thorn Hill | Victor Samuel Summerhayes | | 14/7/1928 | K |
| Festuca arundinacea | GB, VC6 North Somerset, Ivy Thorn Hill | Victor Samuel Summerhayes | | 14/7/1928 | K |