| Anthyllis vulneraria subsp. vulneraria var. coccinea | GB, VC1 West Cornwall, Pentire | Henry Elliott Fox | Watson Botanical Exchange Club Harold Stuart Thompson | 8/1910 | BIRM |
| Hypericum undulatum | GB, VC1 West Cornwall, Perranarworthal | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey William Robert Sherrin | 20/9/1910 | SLBI |
+ | Mentha aquatica x suaveolens = M. x suavis | GB, VC1 West Cornwall, Perranarworthal | Frederick Hamilton Davey | Watson Botanical Exchange Club Charles Bailey | 4/9/1911 | MANCH |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Perranarworthal | Frederick Hamilton Davey | Watson Botanical Exchange Club Charles Edward Britton Frederick Hamilton Davey | 16/8/1911 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Perranarworthal | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey Spencer Henry Bickham | 3/8/1911 | CGE |
| Mentha x maximilianea | GB, VC1 West Cornwall, Perranarworthal | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert Bruce Jackson Frederick Hamilton Davey | 4/9/1911 | K |
| Potentilla erecta x reptans = P. x italica | GB, VC1 West Cornwall, Perranarworthal | Frederick Hamilton Davey | Watson Botanical Exchange Club Charles Bailey | 6/1912 | MANCH |
| Fumaria | GB, VC1 West Cornwall, Perranarworthal, Gilly Farm, Tresamble | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey Harold Stuart Thompson | 8/10/1904 | BIRM |
| Carex arenaria | GB, VC1 West Cornwall, Perranporth | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey William Charles Barton | 2/6/1911 | BM |
| Euphrasia stricta | GB, VC1 West Cornwall, Perranporth | Francis Rilstone | Watson Botanical Exchange Club Francis Rilstone Harold Stuart Thompson | 4/9/1922 | BIRM |
| Euphrasia stricta | GB, VC1 West Cornwall, Perranporth | Francis Rilstone | Watson Botanical Exchange Club | 4/9/1922 | BIRM |
| Genista pilosa | GB, VC1 West Cornwall, Perranporth | Chambre Corker Vigurs | Watson Botanical Exchange Club William Robert Sherrin Francis Rilstone | 7/6/1913 | SLBI |
| Genista pilosa | GB, VC1 West Cornwall, Perranporth | Chambre Corker Vigurs | Watson Botanical Exchange Club Job Edward Lousley Francis Rilstone | 7/6/1913 | SLBI |
| Rumex rupestris | GB, VC1 West Cornwall, Perranporth | Francis Rilstone | Watson Botanical Exchange Club Joseph Edward Little | 7/8/1929 | SLBI |
| Euphrasia nemorosa | GB, VC1 West Cornwall, Perranzabuloe | Francis Rilstone | Watson Botanical Exchange Club | 5/8/1925 | SLBI |
| Rubus radula | GB, VC1 West Cornwall, Perranzabuloe,Lambourne Hill | Francis Rilstone | Watson Botanical Exchange Club | 8/8/1925 | SLBI |
| Anemone nemorosa | GB, VC1 West Cornwall, Ponsanooth | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 7/5/1931 | SLBI |
| Barbarea verna | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club | 4/5/1903 | SLBI |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Edward Francis Linton Frederick Hamilton Davey | 6/6/1905 | BM |
| Fumaria muralis | GB, VC1 West Cornwall, Ponsanooth | Herbert William Pugsley | Watson Botanical Exchange Club Harold Stuart Thompson Herbert William Pugsley | 20/9/1922 | BIRM |
| Fumaria muralis subsp. boraei | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Augustin Ley Frederick Hamilton Davey | 21/9/1906 | BIRM |
| Geranium phaeum | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey | 26/5/1903 | SLBI |
| Geranium phaeum | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey Harold Stuart Thompson | 12/5/1903 | BIRM |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey | 19/9/1902 | CGE |
| Mentha pulegium | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey Spencer Henry Bickham | Watson Botanical Exchange Club Allan Octavian Hume Spencer Henry Bickham | 1/10/1904 | SLBI |
+ | Spergula arvensis | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Charles Bailey Frederick Hamilton Davey | 12/10/1905 | MANCH |
| Spergula arvensis var. sativa | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Croydon Natural History and Scientific Society Watson Botanical Exchange Club Frederick Hamilton Davey | 12/10/1905 | SLBI |
| Valerianella carinata | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey Harold Stuart Thompson | 14/8/1902 | BIRM |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Porkellis | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert John Crosfield | 9/9/1907 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Porkellis | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert Bruce Jackson Frederick Hamilton Davey | 9/9/1907 | K |
| Polygonum oxyspermum | GB, VC1 West Cornwall, Porthcothan Bay | Harold Stuart Thompson | Watson Botanical Exchange Club Harold Stuart Thompson | 22/8/1921 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Praa Sands | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey Spencer Henry Bickham | 16/9/1911 | CGE |
| Saponaria officinalis var. puberula | GB, VC1 West Cornwall, Redruth | Frederick Hamilton Davey | Watson Botanical Exchange Club Augustin Ley Frederick Hamilton Davey | 6/9/1906 | BIRM |
| Leontodon autumnalis | GB, VC1 West Cornwall, Ruan Pool | Iolo Aneurin Williams | Watson Botanical Exchange Club | 2/9/1925 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Saint Columb Minor Cultivated | | Watson Botanical Exchange Club Spencer Henry Bickham William Robert Sherrin | 21/8/1908 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Saint Columb Minor Cultivated | Spencer Henry Bickham | Watson Botanical Exchange Club Spencer Henry Bickham | 21/8/1908 | OXF |
+ | Mentha aquatica x suaveolens = M. x suavis | GB, VC1 West Cornwall, Saint Columb Minor | Spencer Henry Bickham | Watson Botanical Exchange Club Charles Bailey | 21/8/1908 | MANCH |
| Mentha x maximilianea | GB, VC1 West Cornwall, Saint Columb Minor GB, VC36 Herefordshire, Ledbury Cultivated | | Watson Botanical Exchange Club Albert Bruce Jackson Spencer Henry Bickham | 21/8/1908 | K |
| Fumaria occidentalis | GB, VC1 West Cornwall, Saint Ives | Harold Stuart Thompson | Watson Botanical Exchange Club Harold Stuart Thompson Job Edward Lousley | 4/8/1929 | SLBI |
| Briza minor | GB, VC1 West Cornwall, Saint Marys | Arthur George Gregor | Watson Botanical Exchange Club Douglas Montague Heath John Frederick Rayner | 22/6/1898 | BIRM |