| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC5 South Somerset, Bossington | Edward Shearburn Marshall | Edward Francis Linton | 14/9/1907 | CGE |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC5 South Somerset, Bossington | Edward Shearburn Marshall | Charles Bailey | 23/9/1907 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC5 South Somerset, Bossington | Edward Shearburn Marshall | Charles Bailey | 23/9/1907 | MANCH |
| Verbascum lychnitis | GB, VC5 South Somerset, Bossington | Edward Shearburn Marshall | | 23/9/1907 | SLBI |
| Verbascum lychnitis | GB, VC5 South Somerset, Bossington | Edward Shearburn Marshall Spencer Henry Bickham | Watson Botanical Exchange Club Spencer Henry Bickham | 17/8/1908 | K |
| Verbascum lychnitis | GB, VC5 South Somerset, Bossington | Edward Shearburn Marshall Spencer Henry Bickham | Watson Botanical Exchange Club Spencer Henry Bickham William Robert Sherrin | 17/8/1908 | SLBI |
| Drosera anglica | GB, VC5 South Somerset, Britty Common | Edward Shearburn Marshall | Harold Stuart Thompson Edward Shearburn Marshall | 1/7/1915 | BIRM |
| Drosera rotundifolia x anglica = D. x obovata | GB, VC5 South Somerset, Britty Common | Edward Shearburn Marshall | Harold Stuart Thompson | 1/7/1915 | BIRM |
| Eriophorum gracile | GB, VC5 South Somerset, Britty Common | Edward Shearburn Marshall | Harold Stuart Thompson | 1/7/1915 | BIRM |
| Eriophorum latifolium | GB, VC5 South Somerset, Brushford | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 27/8/1907 | BIRM |
| Callitriche truncata | GB, VC5 South Somerset, Cannington | Edward Shearburn Marshall | Watson Botanical Exchange Club | 19/10/1915 | K |
| Equisetum fluviatile x arvense = E. x litorale | GB, VC5 South Somerset, Chard Reservoir | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 16/9/1907 | BIRM |
| Rumex palustris | GB, VC5 South Somerset, Chard Reservoir | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 16/9/1907 | BIRM |
| Callitriche truncata | GB, VC5 South Somerset, Charlton | Edward Shearburn Marshall | Watson Botanical Exchange Club Harold Stuart Thompson | 17/7/1917 | BIRM |
| Fumaria muralis subsp. boraei | GB, VC5 South Somerset, Cheddon Fitzpaine | Edward Shearburn Marshall | Allan Octavian Hume | 8/6/1905 | SLBI |
| Carex otrubae x remota = C. x pseudoaxillaris | GB, VC5 South Somerset, Cothelstone | Edward Shearburn Marshall | | 19/6/1906 | BM |
| Callitriche truncata | GB, VC5 South Somerset, Creech Saint Michael | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Charles Edward Britton | 17/7/1917 | K |
| Viola lactea | GB, VC5 South Somerset, Crowcombe Cultivated | Edward Shearburn Marshall | Watson Botanical Exchange Club | 18/5/1914 | K |
| Viola riviniana x lactea | GB, VC5 South Somerset, Crowcombe GB, VC5 South Somerset, West Monkton Cultivated | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Douglas Montague Heath | 18/5/1914 | BIRM |
+ | Viola lactea | GB, VC5 South Somerset, Crowenube Heathfield | Edward Shearburn Marshall | | 1/6/1910 | BIRM |
| Sedum forsterianum | GB, VC5 South Somerset, Culbone Cultivated | Edward Shearburn Marshall | William Robert Sherrin | 1907 | SLBI |
| Sedum forsterianum | GB, VC5 South Somerset, Culbone Cultivated | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 26/6/1908 | BIRM |
| Aconitum napellus | GB, VC5 South Somerset, Dulverton | Edward Shearburn Marshall | | 2/6/1911 | SLBI |
| Campanula latifolia | GB, VC5 South Somerset, Dulverton | Edward Shearburn Marshall | Watson Botanical Exchange Club Charles Bailey | 22/8/1916 | MANCH |
| Campanula latifolia | GB, VC5 South Somerset, Dulverton | Edward Shearburn Marshall | Watson Botanical Exchange Club Edward Shearburn Marshall Harold Stuart Thompson | 22/8/1916 | BIRM |
| Epilobium tetragonum | GB, VC5 South Somerset, Dulverton Cultivated | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 2/8/1907 | BIRM |
+ | Equisetum fluviatile x arvense = E. x litorale | GB, VC5 South Somerset, Dulverton | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Charles Bailey | 30/5/1905 | MANCH |
| Equisetum fluviatile x arvense = E. x litorale | GB, VC5 South Somerset, Dulverton | Edward Shearburn Marshall | Watson Botanical Exchange Club Harold Stuart Thompson | 3/6/1916 | BIRM |
| Carex contigua | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | Allan Octavian Hume | 8/7/1905 | SLBI |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | Richard Paget Murray | 8/7/1905 | BM |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | Frederick Janson Hanbury | 8/7/1905 | BM |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | Charles Edgar Salmon | 8/7/1905 | BM |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | Anthony Hurt Wolley Dod | 8/7/1905 | BM |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | Edward Shearburn Marshall | 8/7/1905 | BM |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | Alexander Somerville Edward Shearburn Marshall | 8/7/1905 | E |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | | 8/7/1905 | E |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | | 8/7/1905 | E |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | | 26/6/1906 | BM |
| Carex spicata | GB, VC5 South Somerset, Dunster | Edward Shearburn Marshall | | 26/6/1906 | E |
| Aconitum napellus | GB, VC5 South Somerset, Ford | Edward Shearburn Marshall | | 2/6/1911 | MANCH |