| Myriophyllum spicatum | GB, VC17 Surrey, Richmond Park | | Muriel Saunders | 5/6/1876 | ABS |
| Sagittaria sagittifolia | GB, VC17 Surrey, Shalford | William Frederick Saunders | Muriel Saunders | | ABS |
| Trifolium medium | GB, VC17 Surrey, Tooting | William Frederick Saunders | Muriel Saunders | | ABS |
| Hottonia palustris | GB, VC17 Surrey, Tooting Common | William Frederick Saunders | Muriel Saunders | 5/1848 | ABS |
| Lepidium ruderale | GB, VC17 Surrey, Tooting Common | William Frederick Saunders | Muriel Saunders | 9/1891 | ABS |
| Caltha palustris var. guerangerii | GB, VC17 Surrey, Wandsworth | | Muriel Saunders | 3/1846 | ABS |
| Orchis morio | GB, VC17 Surrey, Wandsworth | William Frederick Saunders | Muriel Saunders | 16/5/1852 | ABS |
| Papaver argemone | GB, VC17 Surrey, Wandsworth | William Frederick Saunders | Muriel Saunders | 6/1847 | ABS |
| Papaver argemone | GB, VC17 Surrey, Wandsworth | William Frederick Saunders | Muriel Saunders | 7/1847 | ABS |
| Polygala vulgaris | GB, VC17 Surrey, Wandsworth | W Saunders | Muriel Saunders William Frederick Saunders | | ABS |
| Saxifraga granulata | GB, VC17 Surrey, Wandsworth | W F Saunders | Muriel Saunders | | ABS |
| Tilia platyphyllos x cordata = T. x europaea | GB, VC17 Surrey, Wandsworth | William Frederick Saunders | Muriel Saunders | | ABS |
| Viola tricolor | GB, VC17 Surrey, Wandsworth | William Frederick Saunders | Muriel Saunders | 9/1848 | ABS |
| Coronopus didymus | GB, VC17 Surrey, Wimbledon Common | William Frederick Saunders | Muriel Saunders | 7/1876 | ABS |
| Eriophorum angustifolium | GB, VC17 Surrey, Wimbledon Common | William Frederick Saunders | Muriel Saunders | 7/1855 | ABS |
| Trifolium subterraneum | GB, VC17 Surrey, Wimbledon Common | William Frederick Saunders | Muriel Saunders | 5/1878 | ABS |
| Cirsium dissectum | GB, VC17 Surrey, Wimbledon,Wimbledon Common | William Frederick Saunders | Muriel Saunders | 6/1875 | ABS |
| Drosera intermedia | GB, VC17 Surrey, Woking | William Wilson Saunders | Muriel Saunders | 8/1848 | ABS |
| Erysimum cheiranthoides | GB, VC17 Surrey, Woking | Muriel Saunders | S A Chambers | 1906 | SLBI |
| Scutellaria minor | GB, VC17 Surrey, Woking | Muriel Saunders | Charles Edgar Salmon Lester Vallis Lester-Garland | 1902 | K |
| Caltha palustris var. guerangerii | GB, VC23 Oxfordshire, Binsey | | Muriel Saunders | 6/1857 | ABS |
| Hottonia palustris | GB, VC23 Oxfordshire, Binsey | William Frederick Saunders | Muriel Saunders | 6/1857 | ABS |
| Erophila verna | GB, VC23 Oxfordshire, Kirtlington | William Frederick Saunders | Muriel Saunders | | ABS |
| Polygala vulgaris | GB, VC23 Oxfordshire, Tackley | William Frederick Saunders | Muriel Saunders | 6/1852 | ABS |
| Dactylorhiza incarnata | GB, VC23 Oxfordshire, Weston on the Green | William Frederick Saunders | Muriel Saunders | 5/7/1851 | ABS |
| Cephalanthera damasonium | GB, VC24 Buckinghamshire, Little Missenden | William Wilson Saunders | Muriel Saunders | 1854 | ABS |
| Viola tricolor | GB, VC24 Buckinghamshire, Little Missenden | William Frederick Saunders | Muriel Saunders | 1852 | ABS |
| Listera ovata | GB, VC24 Buckinghamshire, Wootton Park | William Frederick Saunders | Muriel Saunders | 26/6/1852 | ABS |
| Descurainia sophia | GB, VC26 West Suffolk, Brandon | Muriel Saunders | S A Chambers | 8/1913 | SLBI |
| Helleborus viridis | GB, VC34 West Gloucestershire, Bristol | William Frederick Saunders | Muriel Saunders | 14/3/1853 | ABS |
| Rubus plicatus | GB, VC35 Monmouthshire, Chepstow | W F Saunders | Muriel Saunders | 7/1849 | ABS |
| Eriophorum vaginatum | GB, VC48 Merionethshire, Barmouth | W J S | Muriel Saunders | 6/1884 | ABS |
| Viola tricolor | GB, VC62 North-east Yorkshire, Ingleby Greenhow | William Wilson Saunders | Muriel Saunders William Frederick Saunders | 8/1854 | ABS |
| Calamagrostis epigejos | GB, VC62 North-east Yorkshire, Saltburn | Edward Saunders William Frederick Saunders | Muriel Saunders | 1863 | ABS |
| Carex arenaria | GB, VC62 North-east Yorkshire, Whitby | William Frederick Saunders | Muriel Saunders | 7/1854 | ABS |
| Elytrigia juncea | GB, VC62 North-east Yorkshire, Whitby | William Frederick Saunders | Muriel Saunders | 7/1854 | ABS |
| Habenaria albida | GB, VC63 South-west Yorkshire, Todmorden | J B W | Muriel Saunders | 19/6/1842 | ABS |
| Primula farinosa | GB, VC69 Westmorland, Windermere | William Frederick Saunders | Muriel Saunders | 8/1856 | ABS |
| Draba incana | GB, Mid-East Perthshire, Perth | William Gardiner | Muriel Saunders William Frederick Saunders | 7/1842 | ABS |
| Carex arenaria | GB, VC90 Angus, Sands of Barry | William Gardiner | Muriel Saunders | | ABS |
| Corallorhiza trifida | GB, VC90 Angus, Sands of Barry | William Gardiner | Muriel Saunders | | ABS |
| Polygala vulgaris | GB, VC90 Angus, Sands of Barry | William Gardiner | William Frederick Saunders Muriel Saunders | 6/1848 | ABS |
| Goodyera repens | GB, VC92 South Aberdeenshire, Aberdeen | William Frederick Saunders | Muriel Saunders | 7/1868 | ABS |
| Linnaea borealis | GB, Aberdeenshire | William Gardiner | Muriel Saunders William Frederick Saunders | | ABS |
| Littorella uniflora | GB, Ambiguous locality (GB), Horsham | William Wilson Saunders | Muriel Saunders | | ABS |
| Cynodon dactylon | GB, VC113 Channel Islands, Jersey | James Lloyd William Frederick Saunders | Muriel Saunders | 1858 | ABS |
| Lagurus ovatus | GB, VC113 Channel Islands, Jersey | James Lloyd | Muriel Saunders | 1858 | ABS |
| Listera cordata | GB, Scotland | William Gardiner | Muriel Saunders | | ABS |
| Eriocaulon aquaticum | IE, Galway, Connemara | Daniel Hanbury | Muriel Saunders William Frederick Saunders William Wilson Saunders | 1856 | ABS |