| Primula veris | GB, VC28 West Norfolk, Fakenham | W Horton-Smith | | | MANCH |
| Rorippa palustris | GB, VC28 West Norfolk, Fakenham | W Horton-Smith | | | MANCH |
| Potamogeton pusillus | GB, VC28 West Norfolk, Fakenham | W Horton-Smith | | | MANCH |
| Jasione montana | GB, VC28 West Norfolk, Fakenham | | W Horton-Smith | | MANCH |
| Gnaphalium uliginosum | GB, VC28 West Norfolk, Fakenham | | W Horton-Smith | | MANCH |
+ | Torilis arvensis | GB, VC28 West Norfolk, Fakenham | W Horton-Smith | James Ward W Horton-Smith | 7/1867 | MANCH |
+ | Teesdalia nudicaulis | GB, VC28 West Norfolk, Fakenham | W Horton-Smith | W Horton-Smith | 1891 | MANCH |
+ | Anthemis cotula | GB, VC28 West Norfolk, Fakenham,Fakenham Heath | | W Horton-Smith | | MANCH |
+ | Chrysanthemum segetum | GB, VC28 West Norfolk, Fakenham,Fakenham Heath | | W Horton-Smith | | MANCH |
+ | Drosera anglica | GB, VC28 West Norfolk, Fakenham,Fakenham Heath | W Horton-Smith | W Horton-Smith | | MANCH |
+ | Blysmus compressus | GB, VC28 West Norfolk, Fakenham,Fakenham Heath | W Horton-Smith | W Horton-Smith | | MANCH |
+ | Genista anglica | GB, VC28 West Norfolk, Fakenham,Hempton Green | W Horton-Smith | W Horton-Smith | | MANCH |
+ | Hyoscyamus niger | GB, VC28 West Norfolk, Fakenham,Hempton Green | | W Horton-Smith | | MANCH |
+ | Chenopodium murale | GB, VC28 West Norfolk, Fakenham,Little Snoring | W Horton-Smith | W Horton-Smith | | MANCH |
+ | Chenopodium bonus-henricus | GB, VC28 West Norfolk, Hempton | W Horton-Smith | W Horton-Smith | | MANCH |
+ | Oenanthe fistulosa | GB, VC28 West Norfolk, Malt Mill,Fakenham | W Horton-Smith | W Horton-Smith | | MANCH |
+ | Baldellia ranunculoides | GB, VC28 West Norfolk, Ryburgh | W Horton-Smith | W Horton-Smith | 25/7/1826 | MANCH |
| Eriophorum angustifolium | GB, VC28 West Norfolk, Sculthorpe | W Horton-Smith | Manchester Museum | | MANCH |
| Legousia hybrida | GB, VC28 West Norfolk, West Barsham | | W Horton-Smith | | MANCH |
+ | Potentilla argentea | GB, Norfolk, Norfolk,Winburgh | W Horton-Smith | W Horton-Smith | 7/9/1878 | MANCH |
+ | Lathyrus palustris | GB, VC29 Cambridgeshire, Wicken | W Horton-Smith | W Horton-Smith | 2/9/1924 | MANCH |
| Inula conyzae | GB, VC34 West Gloucestershire, Redbrook | W Horton-Smith | | 7/9/1922 | MANCH |
+ | Viola canina | GB, VC40 Shropshire | W Horton-Smith | W Horton-Smith | 7/7/1925 | MANCH |
+ | Agrostemma githago | GB, VC46 Cardiganshire, Aberporth | W Horton-Smith | W Horton-Smith | 7/1877 | MANCH |
| Serratula tinctoria | GB, VC48 Merionethshire, Lake Bala | W Horton-Smith | | 13/8/1922 | MANCH |
| Serratula tinctoria | GB, VC48 Merionethshire, Lake Bala | W Horton-Smith | | 13/8/1922 | MANCH |
+ | Chrysanthemum segetum | GB, VC48 Merionethshire, Lake Bala | W Horton-Smith | W Horton-Smith | 27/8/1922 | MANCH |
+ | Chrysanthemum segetum | GB, VC48 Merionethshire, Lake Bala | W Horton-Smith | W Horton-Smith | 27/8/1922 | MANCH |
+ | Arabis petraea | GB, VC49 Caernarvonshire, Snowdon, Clogwyn Du'r Arddu | W Horton-Smith | W Horton-Smith | 7/1821 | MANCH |
| Orchis mascula | GB, VC50 Denbighshire, Bangor on Dee | W Horton-Smith | | 20/5/1917 | MANCH |
+ | Impatiens glandulifera | GB, VC50 Denbighshire, Bangor on Dee | W Horton-Smith | | 6/8/1917 | MANCH |
| Clematis vitalba | GB, VC50 Denbighshire, Bowling Bank | W Horton-Smith | | 26/8/1917 | MANCH |
| Rorippa palustris | GB, VC50 Denbighshire, Bowling Bank | W Horton-Smith | | 26/8/1917 | MANCH |
| Juncus inflexus x effusus = J. x diffusus | GB, VC50 Denbighshire, Horseman's Green | W Horton-Smith | | 6/8/1917 | MANCH |
| Iris foetidissima | GB, VC50 Denbighshire, Llandegla GB, VC50 Denbighshire, Ruthin | W Horton-Smith | Schill | 24/7/1922 | MANCH |
| Geum rivale x urbanum = G. x intermedium | GB, VC50 Denbighshire, Llangollen | W Horton-Smith | | 3/6/1917 | MANCH |
| Inula conyzae | GB, VC50 Denbighshire, Llangollen | W Horton-Smith | W Horton-Smith | 26/8/1919 | MANCH |
| Hypericum androsaemum x hircinum = H. x inodorum | GB, VC50 Denbighshire, Llangollen Cultivated | W Horton-Smith | | 1/9/1919 | MANCH |
| Hypericum androsaemum x hircinum = H. x inodorum | GB, VC50 Denbighshire, Llangollen Cultivated | W Horton-Smith | | 2/8/1920 | MANCH |
| Sanicula europaea | GB, VC51 Flintshire, Holywell | W Horton-Smith | | 29/7/1917 | MANCH |