+ | Cerastium alpinum | GB, VC97 West Inverness-shire, Laggan,Coire [Corrie] Ardair | Thomas Barker | | 7/1879 | MANCH |
+ | Arabis petraea | GB, VC92 South Aberdeenshire, Ben Aron | | John Harbord Lewis Thomas Barker | 13/8/1879 | MANCH |
+ | Hymenophyllum wilsonii | GB, VC49 Caernarvonshire, Glyders | | Thomas Barker | 4/1880 | MANCH |
+ | Minuartia verna | GB, VC57 Derbyshire, Castleton | Thomas Barker | | 1881 | MANCH |
| Paris quadrifolia | GB, VC34 West Gloucestershire, Dyrham | Alexander Cossart Hasse Thomas Barker | | 4/1881 | MANCH |
+ | Drosera longifolia | GB, VC104 North Ebudes | Thomas Barker | Manchester Museum (Owens College) | 7/1881 | MANCH |
| Carex pallescens | GB, VC104 North Ebudes, Skye | Thomas Barker | | 7/1881 | MANCH |
| Potamogeton polygonifolius | GB, VC104 North Ebudes, Skye | | Thomas Barker | 7/1881 | MANCH |
+ | Eriocaulon aquaticum | GB, VC104 North Ebudes, Sligachan | | Thomas Barker | 7/1881 | MANCH |
+ | Juncus compressus | GB, VC104 North Ebudes, Sligachan | | Thomas Barker | 7/1881 | MANCH |
+ | Chrysanthemum segetum | GB, VC48 Merionethshire, Llan-y-cil, Bala (between) | Thomas Barker | | 8/1881 | MANCH |
| Potamogeton alpinus | GB, VC88 Mid Perthshire, Dunkeld | Thomas Barker | Thomas Barker | 8/1881 | MANCH |
+ | Lycopodiella inundata | GB, VC88 Mid Perthshire, Dunkeld,Loch of the Lowes | Thomas Barker | | 8/1881 | MANCH |
| Potamogeton natans | GB, VC89 East Perthshire, Dunkeld | Thomas Barker | Thomas Barker | 8/1881 | MANCH |
| Potamogeton crispus | GB, VC89 East Perthshire, Dunkeld | Thomas Barker | Thomas Barker | 8/1881 | MANCH |
+ | Chrysanthemum segetum | GB, Mid-East Perthshire, Perthshire,Dunkeld | | Thomas Barker | 8/1881 | MANCH |
+ | Blysmus compressus | GB, South Wales | | Thomas Barker | 4/1882 | MANCH |
+ | Wahlenbergia hederacea | GB, VC49 Caernarvonshire, Betws-y-Coed | Thomas Barker | | 7/1882 | MANCH |
+ | Cardamine impatiens | GB, VC57 Derbyshire, Matlock | Thomas Barker | | 7/1882 | MANCH |
+ | Ophrys insectifera | GB, VC57 Derbyshire, Matlock | | Thomas Barker | 7/1882 | MANCH |
+ | Wahlenbergia hederacea | GB, VC49 Caernarvonshire, Capel Curig | Thomas Barker | | 8/1882 | MANCH |
| Consolida ajacis | GB, VC49 Caernarvonshire, Deganwy | Thomas Barker | Thomas Barker | 8/1882 | MANCH |
| Inula helenium | GB, VC49 Caernarvonshire, Deganwy | | Thomas Barker | 8/1882 | MANCH |
+ | Nepeta cataria | GB, VC49 Caernarvonshire, Gloddaeth | Thomas Barker | | 8/1882 | MANCH |
+ | Juncus compressus | GB, VC49 Caernarvonshire, Little Orme | | Thomas Barker | 8/1882 | MANCH |
+ | Gentianella campestris | GB, VC49 Caernarvonshire, Llandudno | Thomas Barker | | 8/1882 | MANCH |
| Potamogeton natans | GB, VC49 Caernarvonshire, Llyn Ogwen | | Thomas Barker | 8/1882 | MANCH |
| Potamogeton polygonifolius | GB, VC49 Caernarvonshire, Nant Ffrancon | | Thomas Barker | 8/1882 | MANCH |
+ | Astragalus danicus | GB, VC108 West Sutherland | Thomas Barker | | 8/8/1882 | MANCH |
+ | Radiola linoides | GB, VC94 Banffshire, Cullen | | Thomas Barker | 7/1884 | MANCH |
| Climacium dendroides | GB, VC69 Westmorland, Grasmere | Charles Herbert Binstead | Thomas Barker | 31/12/1885 | MANCH |
| Paris quadrifolia | GB, VC57 Derbyshire, Spondon Wood | | Manchester Museum Alexander Cossart Hasse Thomas Barker | 31/3/1886 | MANCH |
+ | Equisetum hyemale x ramosissimum = E. x moorei | IE, VCH20 Co. Wicklow, Three Castle Head | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Reginald Wiliam Scully Thomas Barker | 6/6/1889 | MANCH |
| Bryum rubens | GB, VC14 East Sussex, Stanmer | William Edward Nicholson | Thomas Barker | 4/6/1899 | MANCH |
+ | Arabis petraea | GB, VC92 South Aberdeenshire, Glen Dee | Thomas Barker | Manchester Museum (Owens College) | 8/1899 | MANCH |
| Rhodobryum roseum | GB, VC57 Derbyshire, Combs Reservoir | | Thomas Barker | 2/9/1900 | MANCH |
| Rhodobryum roseum | GB, VC34 West Gloucestershire, Symonds Yat | Eleonora Armitage | Moss Exchange Club Thomas Barker | 5/1903 | MANCH |
+ | Lycopodiella inundata | GB, VC89 East Perthshire, Dunkeld | Thomas Barker | | 8/1951 | MANCH |