| Viola reichenbachiana | GB, VC6 North Somerset, Chelwood | Ida Mary Roper | Botanical Society & Exchange Club of The British Isles Ida Mary Roper | 26/4/1929 to 5/11/1929 | MANCH |
| Doronicum pardalianches | GB, VC6 North Somerset, Chew Magna | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 16/5/1923 | SLBI |
| Fumaria officinalis | GB, VC6 North Somerset, Churchill | Ida Mary Roper | Ida Mary Roper | 7/4/1920 | SLBI |
| Narcissus tazetta x poeticus = N. x medioluteus | GB, VC6 North Somerset, Churchill | Ida Mary Roper | Watson Botanical Exchange Club Augustin Ley Ida Mary Roper | 10/5/1910 | BIRM |
| Schoenus nigricans | GB, VC6 North Somerset, Churchill | Ida Mary Roper | | 24/7/1919 | BIRM |
| Tragopogon pratensis subsp. minor | GB, VC6 North Somerset, Cleeve | Harold Stuart Thompson Ida Mary Roper | Harold Stuart Thompson | 6/8/1930 | BIRM |
| Convolvulus arvensis | GB, VC6 North Somerset, Clevedon | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 9/9/1926 | SLBI |
| Festuca arundinacea | GB, VC6 North Somerset, Clevedon | Ida Mary Roper | Botanical Exchange Club of The British Isles Charles Edward Britton Ida Mary Roper | 25/6/1915 | K |
| Juncus maritimus | GB, VC6 North Somerset, Clevedon | Ida Mary Roper | Harold Stuart Thompson | 8/1920 | BIRM |
| Persicaria maculosa | GB, VC6 North Somerset, Clevedon | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper Job Edward Lousley | 9/9/1926 | SLBI |
| Ranunculus ficaria | GB, VC6 North Somerset, Clevedon | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 16/4/1931 | BIRM |
| Salix cinerea x aurita = S. x multinervis | GB, VC6 North Somerset, Clevedon | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 25/3/1913 24/9/1913 | CGE |
| Rosa stylosa | GB, VC6 North Somerset, Clutton | Ida Mary Roper | Botanical Exchange Club of The British Isles Richard Barker Ullman Patrick Martin Hall | 10/7/1928 to 18/9/1928 | SLBI |
| Polygala calcarea | GB, VC6 North Somerset, Combe Hay | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper William Robert Sherrin | 7/6/1909 | SLBI |
| Polygala calcarea | GB, VC6 North Somerset, Combe Hay, Bath | Ida Mary Roper | Watson Botanical Exchange Club Augustin Ley Ida Mary Roper | 7/6/1909 | BIRM |
| Astragalus glycyphyllos | GB, VC6 North Somerset, Compton Dando | Ida Mary Roper | Watson Botanical Exchange Club Isaac A Helsby | 11/8/1925 | SLBI |
| Astragalus glycyphyllos | GB, VC6 North Somerset, Compton Dando | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 11/8/1925 | SLBI |
| Astragalus glycyphyllos | GB, VC6 North Somerset, Compton Dando | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 11/8/1925 | BIRM |
| Caltha palustris var. guerangerii | GB, VC6 North Somerset, Compton Dando | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 21/5/1921 | SLBI |
| Caltha palustris var. guerangerii | GB, VC6 North Somerset, Compton Dando | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 21/3/1921 | BIRM |
| Viola riviniana | GB, VC6 North Somerset, Congresbury | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 1/5/1920 | SLBI |
| Viola riviniana | GB, VC6 North Somerset, Congresbury | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 1/5/1920 | BIRM |
| Viscum album | GB, VC6 North Somerset, Congresbury | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper William Robert Sherrin | 4/4/1910 | SLBI |
| Salix triandra x viminalis = S. x mollissima | GB, VC6 North Somerset, Corston | Ida Mary Roper | Ida Mary Roper | 24/4/1915 | CGE |
| Salix triandra x viminalis = S. x mollissima | GB, VC6 North Somerset, Corston | Ida Mary Roper | Ida Mary Roper | 16/8/1915 | CGE |
| Polystichum setiferum | GB, VC6 North Somerset, Failand | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 17/3/1925 | BIRM |
| Salix caprea x cinerea = S. x reichardtii | GB, VC6 North Somerset, Failand | Ida Mary Roper | Ida Mary Roper | 17/3/1925 | CGE |
| Viola hirta | GB, VC6 North Somerset, Failand | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 21/3/1918 29/5/1918 | SLBI |
| Viola hirta | GB, VC6 North Somerset, Failand | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 19/4/1917 8/6/1917 | BIRM |
| Viola hirta | GB, VC6 North Somerset, Failand | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 21/3/1918 29/5/1918 | BIRM |
| Ranunculus trichophyllus var. radians | GB, VC6 North Somerset, Farmborough | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 20/5/1918 | BIRM |
| Equisetum sylvaticum | GB, VC6 North Somerset, Frome | Ida Mary Roper | Harold Stuart Thompson Ida Mary Roper | 23/5/1919 | BIRM |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC6 North Somerset, Gatcombe | Ida Mary Roper | Botanical Society & Exchange Club of The British Isles Charles Bailey James Walter White | 23/5/1918 | MANCH |
| Symphytum | GB, VC6 North Somerset, Gatcombe Mill | Ida Mary Roper James Walter White | Watson Botanical Exchange Club | 23/5/1918 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC6 North Somerset, Gatcombe Mill | Ida Mary Roper | Botanical Society & Exchange Club of The British Isles Charles Bailey Ida Mary Roper | 28/5/1915 | MANCH |
| Chaenorhinum minus | GB, VC6 North Somerset, Hallatrow | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 18/8/1926 | K |
| Dryopteris affinis subsp. borreri | GB, VC6 North Somerset, Hallatrow | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 26/7/1918 | BIRM |
| Linaria viscida | GB, VC6 North Somerset, Hallatrow | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 18/8/1926 | SLBI |
| Linaria viscida | GB, VC6 North Somerset, Hallatrow | Ida Mary Roper | Watson Botanical Exchange Club Isaac A Helsby | 18/8/1926 | SLBI |
| Veronica agrestis | GB, VC6 North Somerset, Hallatrow | Ida Mary Roper | Botanical Society & Exchange Club of The British Isles Charles Edward Britton Ida Mary Roper | 25/6/1930 | K |