| Symphytum officinale x asperum = S. x uplandicum | GB, VC17 Surrey, Bookham Common | Joan Frances Hall | London Natural History Society | 14/6/1953 | SLBI |
| Symphytum | GB, VC38 Warwickshire, Long Compton | Peter Shaw Green | Flora of Warwickshire Voucher Specimen | 15/7/1951 | BIRM |
| Symphytum orientale | GB, VC38 Warwickshire | | | 6/5/1951 | BIRM |
| Symphytum officinale | GB, VC38 Warwickshire, Spernall | Peter Shaw Green | Flora of Warwickshire Voucher Specimen | 22/7/1950 | BIRM |
| Symphytum officinale | GB, VC38 Warwickshire, Tredington | Dorothy Adlington Cadbury | Flora of Warwickshire Voucher Specimen | 18/5/1950 | BIRM |
| Symphytum orientale | GB, VC38 Warwickshire, Great Alne | Robert Charles Readett | Flora of Warwickshire Voucher Specimen | 16/4/1950 | BIRM |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC19 North Essex, Little Walden | John Norton Mills | John Norton Mills | 22/6/1949 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC19 North Essex, Little Walden | John Norton Mills | John Norton Mills | 22/5/1949 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC23 Oxfordshire, Chastleton | Douglas Montague Heath | Douglas Montague Heath | 21/8/1948 | BIRM |
| Symphytum grandiflorum | GB, VC17 Surrey, Hurtmore Bottom | | Surrey Flora Committee Charterhouse School | 4/1948 | SLBI |
| Symphytum officinale | GB, VC18 South Essex, Loughton | D A J Little | | 23/6/1947 | ABS |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC16 West Kent, Brasted | Philip Henry Cooke | London Natural History Society | 4/7/1945 | SLBI |
| Symphytum orientale | GB, VC17 Surrey, Ashtead | Philip Henry Cooke | London Natural History Society | 22/5/1945 | SLBI |
| Symphytum orientale | GB, VC16 West Kent, Greenhithe | Job Edward Lousley | Job Edward Lousley | 21/5/1945 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Oglet | Arthur John Farmer | Arthur John Farmer | 9/5/1945 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Oglet | Arthur John Farmer | Arthur John Farmer | 9/5/1945 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC16 West Kent, Lamberhurst | John Richard Wallis | | 10/6/1944 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC23 Oxfordshire, Bladon | John Norton Mills | John Norton Mills | 1/8/1942 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC23 Oxfordshire, Bladon | John Norton Mills | John Norton Mills | 1/8/1942 | MANCH |
| Symphytum tuberosum | GB, VC16 West Kent, Tunbridge Wells | John Richard Wallis | John Richard Wallis | 14/6/1942 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC14 East Sussex, Eridge | John Richard Wallis | John Richard Wallis | 31/5/1942 | SLBI |
| Symphytum officinale var. patens | GB, VC67 South Northumberland, Northumberland | H H Wesencraft | | 5/1939 | SLBI |
| Symphytum tuberosum | GB, VC62 North-east Yorkshire, Ashberry | Gertrude Foggitt | Douglas Montague Heath | 29/4/1939 | BIRM |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC68 North Northumberland, River Tweed | Douglas Montague Heath | Douglas Montague Heath | 14/7/1938 | BIRM |
| Symphytum tuberosum | GB, VC16 West Kent, Greenhithe | Philip Henry Cooke | Philip Henry Cooke | 25/6/1938 | SLBI |
| Symphytum officinale | GB, VC20 Hertfordshire, Radlett | | | 21/6/1938 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC17 Surrey, Merstham | | | 28/5/1938 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC77 Lanarkshire, Carmyle | Robert MacKechnie | | 12/6/1937 30/6/1937 | SLBI |
| Symphytum tuberosum | GB, VC20 Hertfordshire, Thundridge | Richard Barker Ullman | Richard Barker Ullman | 21/6/1936 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC17 Surrey, Burgh Heath | Philip Henry Cooke | London Natural History Society Philip Henry Cooke | 13/6/1936 | SLBI |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC20 Hertfordshire, Berkhampstead Common | Isaac A Helsby | Isaac A Helsby | 30/5/1935 | SLBI |
| Symphytum tuberosum | GB, VC64 Mid-west Yorkshire, Settle | Job Edward Lousley | Job Edward Lousley | 22/5/1935 | SLBI |
| Symphytum tuberosum | GB, VC86 Stirlingshire, Cumbernauld | Douglas Montague Heath | Douglas Montague Heath | 29/5/1934 | BIRM |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC7 North Wiltshire, Monkton Combe | Harold Stuart Thompson | Harold Stuart Thompson | 2/6/1933 to 12/6/1933 | BIRM |
| Symphytum | GB, VC6 North Somerset, Wraxall | James Walter White | Ida Mary Roper | 11/6/1932 | SLBI |
| Symphytum tuberosum | GB, VC16 West Kent, Greenhithe | Philip Henry Cooke | William Robert Sherrin | 23/5/1932 | SLBI |
| Symphytum orientale | GB, VC34 West Gloucestershire, Clifton Cultivated | James Walter White | Job Edward Lousley | 5/1932 to 6/1932 | SLBI |
| Symphytum officinale | GB, VC60 West Lancashire, Dalton | Rowena Mabel Ferguson | | 8/1931 | ABS |
| Symphytum tuberosum | GB, VC20 Hertfordshire, Hitchin Cultivated GB, VC95 Moray, River Findhorn | Katherine D Little | Botanical Exchange Club of The British Isles Job Edward Lousley | 6/1931 | SLBI |
| Symphytum tuberosum | GB, VC14 East Sussex, Eridge | Herbert Cecil Pugsley Herbert William Pugsley | Watson Botanical Exchange Club Harold Stuart Thompson Herbert William Pugsley | 31/5/1931 | BIRM |