| Inula salicina | IE, VCH15 South-east Galway, Lough Derg | Edward Walter Hunnybun | Charles Baylis Green | 25/7/1917 | SLBI |
| Solanum nigrum var. miniatum | GB, VC113 Channel Islands, Jersey | | Charles Baylis Green Edward Walter Hunnybun | 30/7/1917 | SLBI |
| Thalictrum minus subsp. majus | GB, VC88 Mid Perthshire, Fortingall Cultivated | Edward Francis Linton Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Augustin Ley Edward Francis Linton | 9/1897 2/10/1899 11/8/1910 | BIRM |
| Campanula rapunculoides | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Spencer Henry Bickham | 26/8/1909 | BIRM |
| Galium mollugo subsp. erectum | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Watson Botanical Exchange Club Harold Stuart Thompson Spencer Henry Bickham | 26/8/1909 | BIRM |
| Galium mollugo subsp. erectum | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Watson Botanical Exchange Club Augustin Ley Spencer Henry Bickham | 26/8/1909 | BIRM |
| Galium mollugo subsp. erectum | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Augustin Ley Spencer Henry Bickham | 26/8/1909 | BIRM |
| Galium mollugo subsp. erectum | GB, VC31 Huntingdonshire, Woodwalton Fen | Augustin Ley Edward Walter Hunnybun | Augustin Ley | 28/8/1908 | BIRM |
| Galium verum x mollugo = G. x pomeranicum | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Charles Bailey Spencer Henry Bickham | 26/8/1909 | MANCH |
| Galium x pomeranicum | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Spencer Henry Bickham William Robert Sherrin | 26/8/1909 | SLBI |
| Galium x pomeranicum | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Edward Shearburn Marshall Edward Shearburn Marshall | 2/8/1909 | SLBI |
| Luzula multiflora var. pallescens | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun James Groves | Allan Octavian Hume Henry & James Groves | 26/6/1908 | SLBI |
| Luzula multiflora var. pallescens | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun James Groves | Allan Octavian Hume | 26/6/1908 | SLBI |
| Luzula pallidula | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Augustin Ley Spencer Henry Bickham | 13/6/1907 | BIRM |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Watson Botanical Exchange Club Charles Bailey Spencer Henry Bickham | 27/8/1909 | MANCH |
| Potamogeton lucens | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Charles Bailey Spencer Henry Bickham | 5/8/1909 | MANCH |
| Viola | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Augustin Ley Spencer Henry Bickham | 13/6/1907 | BIRM |
| Viola | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun Eliza Standerwick Gregory | Botanical Exchange Club of The British Isles Augustin Ley Eliza Standerwick Gregory | 30/5/1905 | BIRM |
| Viola canina | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Eliza Standerwick Gregory | 29/5/1907 | BIRM |
| Viola canina | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Augustin Ley Spencer Henry Bickham | 6/1907 | BIRM |
| Viola canina subsp. montana | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Watson Botanical Exchange Club Augustin Ley Eliza Standerwick Gregory | 8/6/1908 | BIRM |
| Viola canina subsp. montana | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Augustin Ley Eliza Standerwick Gregory | 29/5/1904 | BIRM |
| Viola canina subsp. canina x canina subsp. montana | GB, VC31 Huntingdonshire, Woodwalton Fen | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Charles Bailey Eliza Standerwick Gregory | 29/5/1907 | MANCH |
+ | Luzula pallidula | GB, VC31 Huntingdonshire, Wood Walton | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Spencer Henry Bickham | 13/7/1907 | MANCH |
+ | Viola canina subsp. montana | GB, VC31 Huntingdonshire, Wood Walton | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Eliza Standerwick Gregory | 29/5/1907 | MANCH |
+ | Viola persicifolia | GB, VC31 Huntingdonshire, Wood Walton | Edward Walter Hunnybun | Charles Bailey Spencer Henry Bickham | 13/6/1907 | MANCH |
| Potamogeton natans x lucens = P. x fluitans | GB, VC31 Huntingdonshire, Warboys Wood | Alfred Fryer Edward Walter Hunnybun | Watson Botanical Exchange Club Spencer Henry Bickham | 15/8/1906 | E |
| Potamogeton natans x lucens = P. x fluitans | GB, VC31 Huntingdonshire, Warboys Wood | Alfred Fryer Edward Walter Hunnybun | Alexander Somerville Spencer Henry Bickham | 15/8/1906 | E |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC31 Huntingdonshire, Warboys | Alfred Fryer Edward Walter Hunnybun | Charles Bailey Spencer Henry Bickham | 15/8/1906 | MANCH |
| Potamogeton coloratus | GB, VC31 Huntingdonshire, Ramsey Saint Mary's | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Augustin Ley Spencer Henry Bickham | 20/7/1908 | BIRM |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer Edward Walter Hunnybun | Charles Bailey | 7/8/1907 | MANCH |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Charles Bailey Spencer Henry Bickham | 7/8/1907 | MANCH |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer Edward Walter Hunnybun | Allan Octavian Hume | 7/8/1907 | SLBI |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer Edward Walter Hunnybun | Allan Octavian Hume | 7/8/1907 | SLBI |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Francis Chalmers Crawford Spencer Henry Bickham | 7/8/1907 | E |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer Edward Walter Hunnybun | Allan Octavian Hume | 7/8/1907 | SLBI |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Pond's Bridge | Edward Walter Hunnybun | Botanical Exchange Club of The British Isles Spencer Henry Bickham | 3/8/1908 | MANCH |
| Potamogeton praelongus | GB, VC31 Huntingdonshire, Offord | Edward Walter Hunnybun | Charles Edgar Salmon | 14/8/1906 | ABS |
| Crataegus monogyna var. lacinata | GB, VC31 Huntingdonshire, Huntingdon | Augustin Ley Edward Walter Hunnybun | Augustin Ley | 25/8/1908 | BIRM |
| Mentha aquatica x spicata = M. x piperita | GB, VC31 Huntingdonshire, Huntingdon Cultivated | Edward Walter Hunnybun | Spencer Henry Bickham | 22/9/1908 | CGE |