| Eleocharis parvula | GB, VC9 Dorset, Little Sea | Margaret Dawber | Langley Kitching | 7/1897 | BIRM |
| Filago germanica | GB, VC113 Channel Islands, Jersey | Margaret Dawber | | 5/7/1898 | BIRM |
| Hirschfeldia incana | GB, VC113 Channel Islands, Jersey, Saint Ouen's | Margaret Dawber | Harold Stuart Thompson | 13/7/1888 | BIRM |
| Hornungia petraea | GB, VC113 Channel Islands, Jersey | Margaret Dawber | Langley Kitching | 1897 | 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 |
| Lavatera cretica | GB, VC113 Channel Islands, Vale, Guernsey | Margaret Dawber | Harold Stuart Thompson | 16/6/1893 | BIRM |
| Malus domestica | GB, VC113 Channel Islands, Guernsey,Moulin Huet Bay | Margaret Dawber | Harold Stuart Thompson | 25/5/1888 | BIRM |
| Mibora minima | GB, VC113 Channel Islands, Guernsey,L'Ancresse | Margaret Dawber | Harold Stuart Thompson W S Harrison | 4/1886 | BIRM |
| Ononis reclinata | GB, VC113 Channel Islands, Guernsey,L'Ancresse | Margaret Dawber | Harold Stuart Thompson | 6/1886 | BIRM |
| Ophioglossum azoricum | GB, VC113 Channel Islands, L'Ancresse Common | Margaret Dawber | Harold Stuart Thompson | 28/5/1888 | BIRM |
| Orchis laxiflora | GB, VC113 Channel Islands, Guernsey, Cobo Bay | Margaret Dawber | Langley Kitching | | BIRM |
| Orchis laxiflora | GB, VC113 Channel Islands, Vale, Guernsey | Margaret Dawber | Harold Stuart Thompson | 6/1886 8/1886 | BIRM |
| Ornithopus pinnatus | GB, VC113 Channel Islands, Alderney | Margaret Dawber | Harold Stuart Thompson W S Harrison | 24/6/1886 | BIRM |
| Orobanche minor var. maritima | GB, VC113 Channel Islands, Guernsey,Moulin Huet Bay | Margaret Dawber | Harold Stuart Thompson | 20/6/1881 | BIRM |
| Orobanche minor | GB, VC113 Channel Islands, Vale, Guernsey | Margaret Dawber | Langley Kitching | 7/1894 | BIRM |
| Prunus domestica | GB, VC113 Channel Islands, Guernsey, The Forest | Margaret Dawber | Harold Stuart Thompson | 18/5/1888 | BIRM |
| Romulea columnae | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | Harold Stuart Thompson W S Harrison | 6/1886 | BIRM |
| Rorippa nasturtium-aquaticum | GB, VC36 Herefordshire, Dadnor | Margaret Dawber | Harold Stuart Thompson | 15/6/1889 | BIRM |
| Salix repens | GB, VC113 Channel Islands, Guernsey,Grande Mare | Margaret Dawber | Langley Kitching | 7/8/1894 | BIRM |
| Scilla autumnalis | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | Harold Stuart Thompson | 6/9/1885 | BIRM |
| Solanum nigrum | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Henry Wilkinson | 9/1898 | BIRM |
| Tripleurospermum maritimum subsp. vinicaule | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | Harold Stuart Thompson | 17/8/1888 | BIRM |
| Tuberaria guttata | GB, VC113 Channel Islands, Alderney | Margaret Dawber | Harold Stuart Thompson | 6/1886 | BIRM |
| Valerianella carinata | GB, VC113 Channel Islands, Guernsey,Saint Owen's Bay | Margaret Dawber | George Goode Harold Stuart Thompson | 6/1892 | BIRM |
| Viola nana | GB, VC113 Channel Islands, L'Ancresse Common | Margaret Dawber | Langley Kitching | 1/5/1894 | BIRM |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC36 Herefordshire, Whitney | Margaret Dawber | John Durbin Gray | 29/8/1890 | CGE |
+ | Cytisus scoparius subsp. maritimus | GB, VC113 Channel Islands, Guernsey,Pleimont | Margaret Dawber | Charles Bailey | 24/6/1894 | MANCH |
+ | Lythrum hyssopifolia | GB, VC113 Channel Islands, Jersey, Saint Ouen's Bay | Margaret Dawber | Elizabeth Anne Lomax | 31/7/1894 | MANCH |
+ | Lythrum hyssopifolia | GB, VC113 Channel Islands, Jersey,Les Marais | Margaret Dawber | Charles Bailey Henry Elliott Fox | 14/7/1888 | MANCH |
+ | Ononis reclinata | GB, VC113 Channel Islands, Guernsey,Moulin Huet Bay | Margaret Dawber | | 28/6/1889 | MANCH |
+ | Ophioglossum lusitanicum | GB, VC113 Channel Islands, Guernsey,Petit Bot Bay | Margaret Dawber | George Alfred Holt James Henry Augustus Steuart | 3/2/1893 | MANCH |
+ | Scilla autumnalis | GB, VC113 Channel Islands, Saint Sampson's, Channel islands | Annie Baker Margaret Dawber | | 9/1886 | PTH |
| Arum italicum | GB, VC113 Channel Islands, Guernsey,Paradis | Margaret Dawber | William Hunt Painter | 30/5/1894 | SHYB |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey | Margaret Dawber | William Hunt Painter | 10/7/1888 | SHYB |
| Coincya monensis subsp. cheiranthos | GB, VC113 Channel Islands, Jersey | Margaret Dawber | | 3/8/1894 | SHYB |
| Lavatera cretica | GB, VC113 Channel Islands, Vale Castle, Guernsey | Margaret Dawber | William Hunt Painter | 6/1895 | SHYB |
| 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 |
| Papaver somniferum | GB, VC113 Channel Islands, Herm | Margaret Dawber | | 26/6/1894 | SHYB |