| Solanum nigrum | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Henry Wilkinson | 9/1898 | BIRM |
| Viola nana | GB, VC113 Channel Islands, L'Ancresse Common | Margaret Dawber | Langley Kitching | 1/5/1894 | BIRM |
| Petrorhagia prolifera | GB, VC113 Channel Islands, Le Quennevais, Jersey | Margaret Dawber | Henry Elliott Fox | 7/1888 | SHYB |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC36 Herefordshire, Whitney | Margaret Dawber | John Durbin Gray | 29/8/1890 | CGE |
| Mibora minima | GB, VC113 Channel Islands, Guernsey,L'Ancresse | Margaret Dawber | Harold Stuart Thompson W S Harrison | 4/1886 | BIRM |
| Ornithopus pinnatus | GB, VC113 Channel Islands, Alderney | Margaret Dawber | Harold Stuart Thompson W S Harrison | 24/6/1886 | BIRM |
| Romulea columnae | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | Harold Stuart Thompson W S Harrison | 6/1886 | BIRM |
+ | Ophioglossum lusitanicum | GB, VC113 Channel Islands, Guernsey,Petit Bot Bay | Margaret Dawber | George Alfred Holt James Henry Augustus Steuart | 3/2/1893 | MANCH |
| Anisantha madritensis | GB, VC113 Channel Islands, Portelet Bay, Jersey | Margaret Dawber | Augustin Ley James Henry Augustus Steuart Botanical Exchange Club of The British Isles | 25/6/1888 | BIRM |
+ | Lythrum hyssopifolia | GB, VC113 Channel Islands, Jersey, Saint Ouen's Bay | Margaret Dawber | Elizabeth Anne Lomax | 31/7/1894 | MANCH |
| Agrimonia procera | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Hunt Painter | 10/8/1894 | ABS |
| Arum italicum | GB, VC113 Channel Islands, Guernsey,Paradis | Margaret Dawber | William Hunt Painter | 30/5/1894 | SHYB |
| Asplenium obovatum | GB, VC113 Channel Islands, Saint Saviour's, Guernsey | Margaret Dawber | William Hunt Painter | 6/1894 | ABS |
| Astrantia major | GB, VC40 Shropshire, Craven Arms | Margaret Dawber | William Hunt Painter | 6/7/1889 | ABS |
| Bupleurum baldense | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Hunt Painter | 7/6/1886 | ABS |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Hunt Painter | 10/7/1888 | SHYB |
| Hypericum linariifolium | GB, VC113 Channel Islands, Jersey, Saint Catherine's Bay | Margaret Dawber | William Hunt Painter | 24/8/1888 | ABS |
| Lavatera cretica | GB, VC113 Channel Islands, Vale Castle, Guernsey | Margaret Dawber | William Hunt Painter | 6/1895 | SHYB |
| Lavatera cretica | GB, VC113 Channel Islands, Vale, Guernsey | Margaret Dawber | William Hunt Painter | 16/6/1893 | ABS |
| Lavatera cretica | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Hunt Painter | 25/9/1891 | ABS |
| Lythrum hyssopifolia | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Margaret Dawber | William Hunt Painter Ernest Stanley Salmon | 31/7/1894 | SHYB |
| Mibora minima | GB, VC113 Channel Islands, Saint Martin's Cliffs | Margaret Dawber | William Hunt Painter | 1886 | SHYB |
| Myosotis discolor | GB, VC113 Channel Islands, Pearl Cliffs, Guernsey | Margaret Dawber | William Hunt Painter | 30/5/1894 | ABS |
| Papaver rhoeas | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Hunt Painter | 12/9/1891 | ABS |
| Rorippa microphylla | GB, VC36 Herefordshire, Dadnor | Margaret Dawber | William Hunt Painter | 15/6/1889 | ABS |
| Scabiosa maritima | GB, VC113 Channel Islands, Jersey, Saint Ouen's | Margaret Dawber | William Hunt Painter | 25/7/1894 | SHYB |
| Senecio vulgaris | GB, VC113 Channel Islands, L'Eree, Guernsey | Margaret Dawber | William Hunt Painter | 6/1886 | ABS |
| Silene gallica | GB, VC113 Channel Islands, Vale Castle, Guernsey | Margaret Dawber | William Hunt Painter | 9/6/1894 | ABS |
| Viola kitaibeliana | GB, VC113 Channel Islands, Guernsey, Rouse Tower | Margaret Dawber | William Hunt Painter | 13/4/1894 | ABS |
| Allium ampeloprasum | GB, VC113 Channel Islands, Guernsey, Fort George | Margaret Dawber | Harold Stuart Thompson | 7/1890 | BIRM |
| Allium sphaerocephalon | GB, VC113 Channel Islands, Saint Aubin's | Margaret Dawber | Harold Stuart Thompson | 13/7/1888 | BIRM |
| Astrantia major | GB, VC40 Shropshire, Craven Arms | Margaret Dawber | Harold Stuart Thompson | 6/7/1889 | BIRM |
| Briza maxima | GB, VC113 Channel Islands, Kings Mills, Guernsey | Margaret Dawber | Harold Stuart Thompson | 2/5/1893 | BIRM |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | Harold Stuart Thompson | 10/7/1888 | BIRM |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | Watson Botanical Exchange Club Harold Stuart Thompson | 10/7/1888 | BIRM |
| Cicendia filiformis | GB, VC113 Channel Islands, L'Ancresse Common | Margaret Dawber | Harold Stuart Thompson | 6/1886 | BIRM |
| Cynosurus echinatus | GB, VC113 Channel Islands, Guernsey,Pleimont | Margaret Dawber | Harold Stuart Thompson | 6/1886 | BIRM |
| Hirschfeldia incana | GB, VC113 Channel Islands, Jersey, Saint Ouen's | Margaret Dawber | Harold Stuart Thompson | 13/7/1888 | BIRM |
| Hypericum linariifolium | GB, VC113 Channel Islands, Jersey | Margaret Dawber | Harold Stuart Thompson | 1888 | BIRM |
| Lagurus ovatus | GB, VC113 Channel Islands, Guernsey,Cobo Bay | Margaret Dawber | Harold Stuart Thompson | 6/1886 | BIRM |