+ | Dryopteris cristata x carthusiana = D. x uliginosa | GB, VC60 West Lancashire, Cockerham Moss | Charles Edgar Salmon Harold Stuart Thompson | | 1930 | BIRM |
| Sorbus aria | GB, VC17 Surrey, Reigate | Charles Edgar Salmon William Robert Sherrin | | 10/1929 | SLBI |
| Potentilla argentea | GB, VC17 Surrey, Reigate Heath | Charles Edgar Salmon Harold Stuart Thompson | Harold Stuart Thompson | 2/9/1929 | BIRM |
| Scleranthus perennis | GB, VC17 Surrey, Reigate Heath | Charles Edgar Salmon Harold Stuart Thompson | Harold Stuart Thompson | 2/9/1929 | BIRM |
| Mentha gracilis var. cardiaca | GB, VC17 Surrey, Reigate Cultivated | Charles Edgar Salmon | Watson Botanical Exchange Club Charles Edgar Salmon Harold Stuart Thompson | 22/8/1929 | BIRM |
| Odontites vernus subsp. litoralis | GB, VC100 Clyde Islands, Brodick | Robert MacKechnie | Watson Botanical Exchange Club Charles Edgar Salmon | 8/8/1929 | SLBI |
| Pimpinella major | GB, VC17 Surrey, Colley Hill | Charles Edgar Salmon | | 24/9/1928 | SLBI |
| Carex disticha | GB, VC12 North Hampshire, Alresford | Roger William Butcher | Charles Edgar Salmon | 11/7/1928 | BM |
| Trifolium incarnatum subsp. molinerii | GB, VC1 West Cornwall, Lizard | Charles Edgar Salmon | Charles Edgar Salmon S A Chambers | 4/6/1928 | SLBI |
| Saxifraga granulata | GB, VC16 West Kent, Ryarsh | Charles Edgar Salmon William Robert Sherrin | | 6/1928 | SLBI |
| Alchemilla vulgaris | GB, VC17 Surrey, Reigate Cultivated | Charles Edgar Salmon | Watson Botanical Exchange Club | 5/1928 | SLBI |
| Carex elongata | GB, Surrey | Charles Edgar Salmon | Charles Edgar Salmon | 31/8/1927 | BM |
| Sagina apetala | GB, VC23 Oxfordshire, Freeland | Harry Joseph Riddelsdell | Charles Edgar Salmon | 30/7/1927 | SLBI |
| Anemone nemorosa | GB, VC17 Surrey, Newdigate | Charles Edgar Salmon | Charles Edgar Salmon | 8/4/1927 | SLBI |
| Hypericum perforatum x maculatum = H. x desetangsii | GB, VC14 East Sussex, Lewes Cultivated | Charles Edgar Salmon | | 17/9/1926 | SLBI |
| Hypericum perforatum x maculatum = H. x desetangsii | GB, VC14 East Sussex, Lewes Cultivated | Charles Edgar Salmon | | 17/7/1926 | SLBI |
| Melittis melissophyllum | GB, VC3 South Devon, Christow | Charles Edgar Salmon | Charles Edgar Salmon Charles Edward Britton | 17/6/1926 | K |
| Carex muricata subsp. pairae | GB, VC28 West Norfolk, Wallington Hall | Joseph Edward Little | Watson Botanical Exchange Club Charles Edgar Salmon | 10/6/1926 9/9/1927 | BM |
| Carex muricata subsp. pairae | GB, VC28 West Norfolk, Wallington Hall | Joseph Edward Little | Watson Botanical Exchange Club Arthur Bennett Charles Edgar Salmon | 10/6/1926 9/9/1927 | BM |
| Alchemilla monticola | GB, VC66 County Durham, Teesdale Cultivated | Alfred James Wilmott | Watson Botanical Exchange Club Charles Edgar Salmon Harold Stuart Thompson | 20/5/1926 | BIRM |
| Alchemilla monticola | GB, VC17 Surrey, Reigate Cultivated GB, VC66 County Durham, Teesdale | Alfred James Wilmott Charles Edgar Salmon | Charles Edgar Salmon Job Edward Lousley Watson Botanical Exchange Club | 20/5/1926 | SLBI |
| Alchemilla monticola | GB, VC66 County Durham, Teesdale Cultivated | Alfred James Wilmott | Watson Botanical Exchange Club Charles Edgar Salmon | 20/5/1926 | SLBI |
| Carex spicata | GB, VC21 Middlesex, Hampton Court | Job Edward Lousley | Arthur Bennett Charles Edgar Salmon Job Edward Lousley | 19/5/1926 | BM |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Charles Edgar Salmon | Charles Edgar Salmon | 9/1925 | K |
| Carex x helvola | GB, VC92 South Aberdeenshire, Lochnagar | Arthur Humble Evans | Arthur Bennett Charles Edgar Salmon | 30/8/1925 | BM |
| Mentha piperita var. piperita | GB, VC17 Surrey, Broadham Green | Charles Edgar Salmon | Charles Edgar Salmon | 28/8/1925 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Walton in Gordano | James Walter White | Charles Edgar Salmon J Fraser Spencer Henry Bickham | 25/8/1925 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Walton in Gordano | James Walter White | Watson Botanical Exchange Club Charles Edgar Salmon Spencer Henry Bickham | 17/8/1925 | CGE |
| Carex muricata subsp. pairae | GB, VC28 West Norfolk, Stow Bardolph | Joseph Edward Little | Watson Botanical Exchange Club Charles Edgar Salmon Joseph Edward Little | 8/8/1925 | BM |
| Carex pseudocyperus | GB, VC28 West Norfolk, Hilgay | Joseph Edward Little | Charles Edgar Salmon | 31/7/1925 | BM |
| Carex maritima | GB, VC108 West Sutherland, Bettyhill | Roger William Butcher | Charles Edgar Salmon | 30/7/1925 | BM |
| Carex disticha | GB, VC70 Cumberland, Blencarn | | Charles Edgar Salmon | 29/7/1925 | BM |
| Carex disticha | GB, VC69,VC70, Blencarn | | Charles Edgar Salmon | 29/7/1925 | BM |
| Carex disticha | GB, VC17 Surrey, Thursley Common | Iolo Aneurin Williams | Watson Botanical Exchange Club Charles Edgar Salmon | 27/7/1925 | BM |
| Carex ovalis | GB, VC17 Surrey, Milford | Iolo Aneurin Williams | Charles Edgar Salmon | 22/6/1925 | BM |
| Carex divisa | GB, VC113 Channel Islands, Jersey, Saint Ouens Pond | Louis Arsene | Charles Edgar Salmon | 16/6/1925 | BM |
| Veronica chamaedrys | GB, VC17 Surrey, Colley Hill | Charles Edgar Salmon | Charles Edgar Salmon | 31/5/1925 | K |
+ | Alchemilla wichurae | GB, VC17 Surrey, Reigate GB, VC89 East Perthshire, Perth & Kinross, Dalnaspidal | Charles Edgar Salmon | Charles Edgar Salmon | 5/1925 | MANCH |
| Chenopodium urbicum | GB, VC10 Isle of Wight, Shalfleet | James Groves | Watson Botanical Exchange Club Charles Edgar Salmon | 17/9/1924 | SLBI |
| Arenaria serpyllifolia | GB, VC15 East Kent, Nagden Marshes | Charles Edgar Salmon | Richard Barker Ullman | 15/9/1924 | SLBI |