| Scrophularia scorodonia | GB, VC1 West Cornwall, Saint Ives | Henry Ibbotson | George Stephen West | 7/1858 | BIRM |
| Erica ciliaris | GB, Cornwall | Henry Ibbotson | Frederick Townsend | | SLBI |
| Herniaria hirsuta | GB, Cornwall | | George Stephen West Henry Ibbotson | 1856 | BIRM |
| Asplenium marinum | GB, VC4 North Devon, Ilfracombe | Henry Ibbotson | Charles Bailey John Hardy Charles Bailey | 10/1846 | BIRM |
| Illecebrum verticillatum | GB, Devon | | George Stephen West Henry Ibbotson | 1852 | BIRM |
+ | Dianthus deltoides | GB, VC14 East Sussex, Jervington | Henry Ibbotson | Charles Bailey I Hardy John Hardy | 7/1849 | MANCH |
| Hordeum marinum | GB, VC14 East Sussex, Newhaven | Henry Ibbotson | Mantua And Montferrat | 6/1850 | BON |
+ | Orchis ustulata | GB, VC15 East Kent | Henry Ibbotson | Charles Bailey John Ray Hardy | 6/1847 | MANCH |
| Orchis ustulata | GB, VC15 East Kent, Dover | Henry Ibbotson | Augustin Ley William Henry Purchas | 6/1847 | BIRM |
| Iris foetidissima | GB, VC15 East Kent, Folkestone | Henry Ibbotson | Charles Bailey John Hardy | 7/1847 | MANCH |
+ | Bupleurum falcatum | GB, VC18 South Essex, Norton Heath | | Henry Ibbotson Samuel Octavus Gray | 1842 | MANCH |
| Juncus inflexus x effusus = J. x diffusus | GB, VC20 Hertfordshire, Darman's Green | Henry Ibbotson | Charles Bailey John Hardy | | MANCH |
+ | Artemisia campestris | GB, VC26 West Suffolk, Bury Saint Edmunds (Ne of),Brandon | Henry Ibbotson | Charles Bailey John Ray Hardy | 1847 | MANCH |
| Dryopteris cristata x carthusiana = D. x uliginosa | GB, VC28 West Norfolk, Bawsey Heath | Henry Ibbotson | Charles Bailey John Hardy | 7/1846 | BIRM |
+ | Dryopteris cristata x carthusiana = D. x uliginosa | GB, VC28 West Norfolk, Bawsey Heath | Henry Ibbotson | | 7/1846 | BIRM |
+ | Dryopteris cristata | GB, VC28 West Norfolk, Lynn,Bawsey Heath | Henry Ibbotson | Charles Bailey John Ray Hardy | 7/1846 | MANCH |
| Pulsatilla vulgaris | GB, VC30 Bedfordshire, Pegsdon | | Allan Octavian Hume Frederick Townsend Henry Ibbotson | 4/1842 | SLBI |
| Narcissus tazetta x poeticus = N. x medioluteus | GB, VC33 East Gloucestershire, Edgeworth | Henry Ibbotson | Charles Bailey John Hardy | 5/1849 | MANCH |
+ | Ranunculus arvensis | GB, VC54 North Lincolnshire | Henry Ibbotson | John Ray Hardy | 6/1847 | MANCH |
| Nardus stricta | GB, VC55 Leicestershire, Congerstone | Henry Ibbotson | Charles Ottley Groom | | BON |
| Carex divulsa subsp. divulsa | GB, VC56 Nottinghamshire, Colwick | | Henry Ibbotson | 7/1843 | BM |
+ | Radiola linoides | GB, VC58 Cheshire, Wythenshawe,Baguley | John Bland Wood | Henry Ibbotson John Bland Wood | 9/1843 | MANCH |
| Carex elongata | GB, VC59 South Lancashire, Chorlton [Chorlton-cum-Hardy] | Henry Ibbotson | Henry Ibbotson | 6/1843 | BM |
| Carex arenaria | GB, VC59 South Lancashire, Liverpool | Henry Ibbotson | Henry Ibbotson | 1843 | BM |
+ | Myriophyllum verticillatum | GB, VC61 South-east Yorkshire, nr Kirkham | Henry Ibbotson | Charles Bailey John Ray Hardy | 7/1842 | MANCH |
| Frangula alnus | GB, VC62 North-east Yorkshire, Airyholme | Henry Ibbotson | Charles Ottley Groom | 7/1850 | BON |
+ | Primula farinosa | GB, VC62 North-east Yorkshire, Ashberry Pastures | Henry Ibbotson | Charles Bailey Charles Bailey John Hardy | 6/1860 | MANCH |
| Beta vulgaris subsp. maritima | GB, VC62 North-east Yorkshire, Castle Hill Scarborough,Scarborough,Castle Hill | Henry Ibbotson | Frederick Townsend | 1842 | SLBI |
| Actaea spicata | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Charles Bailey William Groves Perry William Lowndes Notcutt | 6/1842 | MANCH |
| Actaea spicata | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Charles Bailey John Hardy | 6/1849 | MANCH |
| Asplenium adiantum-nigrum | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Charles Bailey John Hardy | 9/1846 | BIRM |
| Asplenium trichomanes | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Charles Bailey John Hardy | 1842 | BIRM |
| Blysmus compressus | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Botanical Society of London Mantua And Montferrat | 8/1850 | BON |
| Calamagrostis canescens | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Mantua And Montferrat | 2/7/1850 | BON |
| Cardamine hirsuta | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | George Stephen West | 5/1879 | BIRM |
| Carex pallescens | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Charles Bailey John Hardy | 7/1848 | MANCH |
| Carex pallescens | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | George Stephen West William A Mudd | 7/6/1849 | BIRM |
| Carex remota | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Mantua And Montferrat | 7/1849 | BON |
| Ceratocapnos claviculata | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Charles Bailey John Hardy | 6/1842 | MANCH |
| Convallaria majalis | GB, VC62 North-east Yorkshire, Castle Howard | Henry Ibbotson | Frederick Townsend Henry Ibbotson | 5/1843 | SLBI |