| Aphanes arvensis | GB, VC3 South Devon, East Allington | Stuart Max Walters | Botanical Society of The British Isles Cambridge University | 25/6/1951 | SLBI |
| Thymus praecox subsp. arcticus | GB, Suffolk, Eriswell | Christopher Donald Pigott | Botanical Society of The British Isles Cambridge University | 7/1951 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Sanderstead | | Botanical Society of The British Isles Donald Peter Young | 14/8/1951 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Sanderstead | | Botanical Society of The British Isles Donald Peter Young | 14/8/1951 | OXF |
| Lepidium | GB, VC15 East Kent, Hothfield | Job Edward Lousley | Botanical Society of The British Isles | 4/5/1952 | SLBI |
| Alchemilla alpina | GB, VC66 County Durham, Bishop Auckland | Stuart Max Walters | Botanical Society of The British Isles Cambridge University | 25/5/1952 | SLBI |
| Carex pendula | GB, VC39 Staffordshire, Whitmore | Eric Smoothy Edees | Botanical Society of The British Isles | 4/7/1952 | E |
| Senecio inaequidens | GB, VC30 Bedfordshire, Biggleswade Cultivated | Job Edward Lousley | Botanical Society of The British Isles | 13/7/1952 | SLBI |
| Mentha spicata | GB, VC21 Middlesex, Northwood Cultivated GB, VC90 Angus, Glamis | Rex Alan Henry Graham | Botanical Society of The British Isles Rex Alan Henry Graham | 15/8/1952 | K |
| Mentha spicata x suaveolens = M. x villosa | GB, VC21 Middlesex, Northwood Cultivated GB, VC91 Kincardineshire, Garvock | Rex Alan Henry Graham | Botanical Society of The British Isles Rex Alan Henry Graham | 15/8/1952 | K |
| Mentha x piperita | GB, VC37 Worcestershire, Alfrick Cultivated | Rex Alan Henry Graham | Botanical Society of The British Isles Rex Alan Henry Graham | 16/8/1952 | K |
| Mentha x verticillata var. paludosa | GB, VC91 Kincardineshire, Banchory | | Botanical Society of The British Isles Rex Alan Henry Graham | 10/9/1952 | K |
| Mentha spicata | GB, VC91 Kincardineshire, St Cyrus Cultivated | | Botanical Society of The British Isles Rex Alan Henry Graham | 15/9/1952 | K |
| Fumaria boraei | GB, VC57 Derbyshire, Dore | Frank Wilfred Adams | Botanical Society of The British Isles Frank Wilfred Adams | 30/9/1952 | SLBI |
| Mentha longifolia | GB, VC13 West Sussex, Amberley | Edward Charles Wallace | Botanical Society of The British Isles | 8/8/1953 | SLBI |
| Galeopsis angustifolia | GB, VC41 Glamorganshire, West Aberthaw | Arthur Edward Wade | Botanical Society of The British Isles National Museum of Wales | 11/8/1953 | SLBI |
+ | Otanthus maritimus | IE, VCH12 Co. Wexford, Rosslare | John Norton Mills | Botanical Society of The British Isles John Norton Mills | 31/8/1953 | MANCH |
+ | Otanthus maritimus | IE, VCH12 Co. Wexford, Rosslare | John Norton Mills | Botanical Society of The British Isles | 31/8/1953 | MANCH |
+ | Otanthus maritimus | IE, VCH12 Co. Wexford, Rosslare | John Norton Mills | Botanical Society of The British Isles John Norton Mills | 31/8/1953 | MANCH |
| Bupleurum tenuissimum | GB, VC15 East Kent, Faversham | Reginald Ernest Parker | Botanical Society of The British Isles | 9/1953 | K |
| Mentha spicata | GB, VC77 Lanarkshire, Liberton | Clara Winsome Muirhead | Botanical Society of The British Isles | 3/10/1953 | K |
| Hirschfeldia incana | GB, VC18 South Essex, Barking | Job Edward Lousley | Botanical Society of The British Isles Job Edward Lousley | 17/10/1953 | SLBI |
| Galinsoga quadriradiata | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens | Stuart Max Walters | Botanical Society of The British Isles Cambridge University | 30/10/1953 | SLBI |
| Sisymbrium pannonicum | GB, VC55 Leicestershire, Aylestone | Edward Kidston Horwood | Botanical Society of The British Isles | 4/8/1954 | SLBI |
| Sisymbrium orientale | GB, VC55 Leicestershire, Aylestone | Edward Kidston Horwood | Botanical Society of The British Isles | 12/8/1954 | SLBI |
| Amsinckia | GB, VC8 South Wiltshire, Little Cheverell | | Botanical Society of The British Isles Joseph Donald Grose | 6/10/1954 | SLBI |
| Carex leporina | GB, VC67 South Northumberland, Deadwater Moor | Edward Benedict Bangerter | Botanical Society of The British Isles | 29/6/1958 | BM |
| Carex elongata | GB, VC86 Stirlingshire, Gartfairn | Alan McGregor Stirling J Mitchell | Botanical Society of The British Isles | 4/6/1977 | E |
| Oenanthe lachenalii | IE, VCH12 Co. Wexford, Castlebridge | Botanical Society of The British Isles | | 29/8/1977 | GALW |
| Carex arenaria | IE, VCH12 Co. Wexford, Carnsore Point | Botanical Society of The British Isles | | 30/8/1977 | GALW |
| Chenopodium album | IE, VCH12 Co. Wexford, Tacumshin Lough | Botanical Society of The British Isles | | 30/8/1977 | GALW |
| Crithmum maritimum | IE, VCH12 Co. Wexford, Carnsore Point | Botanical Society of The British Isles | | 30/8/1977 | GALW |
| Erodium moschatum | IE, VCH12 Co. Wexford, Ballyteige | Botanical Society of The British Isles | | 30/8/1977 | GALW |
| Eryngium maritimum | IE, VCH12 Co. Wexford, Lady's Island | Botanical Society of The British Isles | | 30/8/1977 | GALW |
| Honckenya peploides | IE, VCH12 Co. Wexford, Lady's Island | Botanical Society of The British Isles | | 30/8/1977 | GALW |
| Salicornia europaea | IE, VCH12 Co. Wexford, Lady's Island | Botanical Society of The British Isles | | 30/8/1977 | GALW |
| Atriplex prostrata x longipes = A. x gustafssoniana | GB, VC34 West Gloucestershire, Bristol | Angela Roberts | Botanical Society of The British Isles | 28/5/1979 | MANCH |
| Atriplex patula | IE, VCH9,VCH15, Roo | Botanical Society of The British Isles | | 3/7/1982 | GALW |
| Dryopteris filix-mas | IE, VCH25 Co. Roscommon, Roscommon | Botanical Society of The British Isles | | 19/9/1984 | GALW |
| Erysimum cheiranthoides | IE, VCH9,VCH15, Roo | Botanical Society of The British Isles | | 3/7/1987 | GALW |
| Carex otrubae | IE, VCH12 Co. Wexford, Tacumshin Lake | Botanical Society of The British Isles | | 30/8/1987 | GALW |
+ | Cuscuta epithymum | GB, VC13 West Sussex, Midhurst,Woolbeding | David Paul Earl Heinrick E Weber | Botanical Society of The British Isles David Paul Earl | 7/2001 | MANCH |