| Amaranthus retroflexus | GB, VC1 West Cornwall, Marazion Green | Augustin Ley | Augustin Ley | 25/9/1884 | BIRM |
| Amaranthus retroflexus | GB, VC1 West Cornwall, Saint Mawgan | Frederick Hamilton Davey | Allan Octavian Hume | 28/9/1901 | SLBI |
| Amaranthus retroflexus | GB, VC2 East Cornwall, Par | Frederick Hamilton Davey | Allan Octavian Hume | 16/8/1902 | SLBI |
| Amaranthus retroflexus | GB, VC2 East Cornwall, Par | Frederick Hamilton Davey | Allan Octavian Hume | 16/8/1902 | SLBI |
| Amaranthus retroflexus | GB, VC2 East Cornwall, Par | Chambre Corker Vigurs | Watson Botanical Exchange Club Job Edward Lousley Francis Rilstone | 10/1914 | SLBI |
| Amaranthus retroflexus | GB, VC2 East Cornwall, Par Harbour | Allan Octavian Hume | Allan Octavian Hume | 29/8/1901 | SLBI |
| Amaranthus retroflexus | GB, VC7 North Wiltshire, Kemble | W J Greenwood | | 17/9/1911 | GLR |
| Amaranthus retroflexus | GB, VC9,VC11, Bournemouth | Edward Francis Linton | Allan Octavian Hume Edward Francis Linton | 6/9/1901 | SLBI |
| Amaranthus retroflexus | GB, VC13 West Sussex, Henfield | Payne | Isaac A Helsby | 21/9/1934 | SLBI |
| Amaranthus retroflexus | GB, VC16 West Kent, Barming | Cyril West | Job Edward Lousley | 9/1944 | SLBI |
| Amaranthus retroflexus | GB, VC16 West Kent, Tripcock Point | Henry Franklin Parsons | Watson Botanical Exchange Club Anthony Hurt Wolley Dod Henry Franklin Parsons | 18/8/1900 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Addiscombe | | Croydon Natural History and Scientific Society Robert Russell Hutchinson | 7/1933 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Godalming | S Bailey | London Natural History Society Edmund Browne Bishop | 3/10/1926 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Godalming | S Bailey | London Natural History Society Edmund Browne Bishop | 3/10/1926 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Horley | A Bennett | William Hadden Beeby | 11/1878 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Kew | William Hillhouse | | 7/9/1877 | BIRM |
| Amaranthus retroflexus | GB, VC17 Surrey, Kew | George Nicholson | Augustin Ley | 9/1878 | BIRM |
| Amaranthus retroflexus | GB, VC17 Surrey, Merton Parish | Charles Edward Britton | Charles Edward Britton | 3/9/1908 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Raynes Park | Charles Edward Britton | Charles Edward Britton | 9/8/1908 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Richmond | George Nicholson | William Hadden Beeby | 9/1878 | SLBI |
| Amaranthus retroflexus | GB, VC17 Surrey, Streatham | Harold Stuart Thompson | Harold Stuart Thompson | 8/1906 | BIRM |
| Amaranthus retroflexus | GB, VC21 Middlesex, Sudbury | William Robert Sherrin | William Robert Sherrin | 9/1898 | SLBI |
| Amaranthus retroflexus | GB, VC23 Oxfordshire, Sibford | Douglas Montague Heath | Douglas Montague Heath | 28/8/1936 | BIRM |
| Amaranthus retroflexus | GB, VC24 Buckinghamshire, Langley | Douglas Montague Heath | Douglas Montague Heath | 9/1930 | BIRM |
| Amaranthus retroflexus | GB, VC28 West Norfolk, Houghton | Richard Charles L'Estrange Burges | | 24/9/1950 | BIRM |
| Amaranthus retroflexus | GB, VC33 East Gloucestershire, Gloucester | John Wilton Haines | | 9/1915 | GLR |
| Amaranthus retroflexus | GB, VC33 East Gloucestershire, Hempstead | John Wilton Haines | | 21/8/1915 | GLR |
| Amaranthus retroflexus | GB, VC33 East Gloucestershire, Tewkesbury | Charles William Bannister | William Robert Price | 11/10/1944 | GLR |
| Amaranthus retroflexus | GB, VC33 East Gloucestershire, Tewkesbury | Charles William Bannister | William Robert Price | 17/8/1947 | GLR |
| Amaranthus retroflexus | GB, VC33 East Gloucestershire, Tuffley | Gustavus A Ornano St Brody | | 6/1865 | GLR |
| Amaranthus retroflexus | GB, VC34 West Gloucestershire, Avonmouth | Douglas Montague Heath | Douglas Montague Heath | 9/1930 | BIRM |
| Amaranthus retroflexus | GB, VC34 West Gloucestershire, Avonmouth Docks, Bristol | Ida Mary Roper | Watson Botanical Exchange Club | 19/8/1926 | SLBI |
| Amaranthus retroflexus | GB, VC34 West Gloucestershire, Avonmouth Docks, Bristol | Ida Mary Roper | Ida Mary Roper Job Edward Lousley | 19/8/1926 | SLBI |
| Amaranthus retroflexus | GB, VC34 West Gloucestershire, Bristol, Saint Philip | James Walter White | Watson Botanical Exchange Club | 9/10/1923 | SLBI |
| Amaranthus retroflexus | GB, VC36 Herefordshire, Sellack | Augustin Ley | Augustin Ley | 10/10/1899 | BIRM |
| Amaranthus retroflexus | GB, VC38 Warwickshire, Bodymoor Heath | Harold H Fowkes | Flora of Warwickshire Voucher Specimen | 9/1976 | BIRM |
| Amaranthus retroflexus | GB, VC38 Warwickshire, Kenilworth | | Robert Large Baker | 10/1872 | BIRM |
| Amaranthus retroflexus | GB, VC38 Warwickshire, Kenilworth | | Robert Large Baker | 9/1874 | BIRM |
| Amaranthus retroflexus | GB, VC38 Warwickshire, Kenilworth | | Robert Large Baker | 9/1874 | BIRM |
| Amaranthus retroflexus | GB, VC38 Warwickshire, Kenilworth | Henry Bromwich | Botanical Exchange Club of The British Isles Augustin Ley | 9/1874 | BIRM |
| Amaranthus retroflexus | GB, VC41 Glamorganshire, Aberdare | Harry Joseph Riddelsdell | Harry Joseph Riddelsdell | 9/1901 | GLR |
| Amaranthus retroflexus | GB, VC49 Caernarvonshire, Llandudno | Isaac A Helsby | Isaac A Helsby | 23/9/1905 | SLBI |
| Amaranthus retroflexus | GB, VC49 Caernarvonshire, Llandudno | Allan Octavian Hume | Allan Octavian Hume | 17/9/1905 | SLBI |
| Amaranthus retroflexus | GB, VC49 Caernarvonshire, Llandudno | Allan Octavian Hume | Allan Octavian Hume | 23/9/1905 | SLBI |
| Amaranthus retroflexus | GB, VC59 South Lancashire, Aintree | James Alfred Wheldon | Botanical Exchange Club of The British Isles Augustin Ley | 9/1900 | BIRM |
| Amaranthus retroflexus | GB, VC61 South-east Yorkshire, Hull | Charles Waterfall | Croydon Natural History and Scientific Society Watson Botanical Exchange Club Charles Waterfall Henry Franklin Parsons | 10/1901 | SLBI |
| Amaranthus retroflexus | GB, VC113 Channel Islands, Jersey | C J Tempere | George Stephen West | 8/1878 | BIRM |
| Amaranthus retroflexus | GB, VC113 Channel Islands, Jersey,Gorey | Stanley Guiton | Botanical Exchange Club of The British Isles Augustin Ley Stanley Guiton | 12/8/1900 | BIRM |
| Amaranthus retroflexus | GB, VC113 Channel Islands, La Porte l'Etacq, Jersey | Richard Charles L'Estrange Burges | | 2/9/1948 | BIRM |