| Carex binervis | GB, VC5 South Somerset, Gortnell Common | Edward Shearburn Marshall | | 27/6/1916 | E |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Hestercombe | Edward Shearburn Marshall | | 16/8/1906 | CGE |
| Ribes rubrum | GB, VC5 South Somerset, Ilminster | Edward Shearburn Marshall | Watson Botanical Exchange Club Harold Stuart Thompson | 30/4/1917 | BIRM |
| Ribes rubrum | GB, VC5 South Somerset, Ilminster | Edward Shearburn Marshall | Watson Botanical Exchange Club William Robert Sherrin | 30/4/1917 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Kings Brompton | Edward Shearburn Marshall | Spencer Henry Bickham | 9/9/1907 | CGE |
| Fumaria boraei | GB, VC5 South Somerset, Kingston | Edward Shearburn Marshall | Allan Octavian Hume | 8/6/1905 | SLBI |
| Erophila verna | GB, VC5 South Somerset, Langport GB, VC5 South Somerset, Wick | Edward Shearburn Marshall | | 8/4/1907 | SLBI |
| Alisma lanceolatum | GB, VC5 South Somerset, Lilstock | Edward Shearburn Marshall | | 25/6/1914 | E |
| Silene | GB, VC5 South Somerset, Milverton | Edward Shearburn Marshall | | 25/5/1915 | BIRM |
| Fumaria capreolata | GB, VC5 South Somerset, Minehead | Augustin Ley Edward Shearburn Marshall | Augustin Ley | 12/6/1906 | BIRM |
| Fumaria capreolata | GB, VC5 South Somerset, Minehead | Augustin Ley Edward Shearburn Marshall | Augustin Ley | 12/6/1906 | BIRM |
| Fumaria muralis subsp. boraei | GB, VC5 South Somerset, Minehead | Augustin Ley Edward Shearburn Marshall | Augustin Ley | 12/6/1906 | BIRM |
| Fumaria muralis subsp. boraei | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | William Robert Sherrin | 12/6/1906 | SLBI |
| Fumaria muralis subsp. boraei | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | | 12/6/1906 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Edward Francis Linton | 20/9/1906 | CGE |
| Salicornia fragilis | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 3/10/1910 | BIRM |
| Salicornia fragilis | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Watson Botanical Exchange Club Augustin Ley | 3/10/1910 | BIRM |
| Salicornia ramosissima | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Watson Botanical Exchange Club Harold Stuart Thompson | 3/10/1910 | BIRM |
| Sedum forsterianum | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Edward Shearburn Marshall William Robert Sherrin | 1/7/1908 | SLBI |
| Sedum forsterianum subsp. elegans | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 1/7/1908 | BIRM |
+ | Silene conica | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Watson Botanical Exchange Club Charles Bailey | 20/7/1882 | MANCH |
| Trifolium suffocatum | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Allan Octavian Hume | 18/5/1905 | SLBI |
| Allium ampeloprasum | GB, VC5 South Somerset, Minehead Warren Cultivated | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley Edward Shearburn Marshall | 10/8/1908 | BIRM |
| Erophila verna | GB, VC5 South Somerset, Minehead Warren | Edward Shearburn Marshall | Allan Octavian Hume Edward Shearburn Marshall | 21/3/1905 | SLBI |
| Silene conica | GB, VC5 South Somerset, Minehead Warren | Edward Shearburn Marshall | Laurence Athelstan Molesworth Riley | 1905 | K |
| Silene conica | GB, VC5 South Somerset, Minehead Warren | Edward Shearburn Marshall | Augustin Ley Edward Shearburn Marshall Botanical Exchange Club of The British Isles | 18/5/1905 | BIRM |
| Silene conica | GB, VC5 South Somerset, Minehead Warren | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Charles Edward Britton | 18/5/1905 | K |
| Silene conica | GB, VC5 South Somerset, Minehead Warren | Edward Shearburn Marshall | Allan Octavian Hume | 18/5/1905 | SLBI |
| Silene conica | GB, VC5 South Somerset, Minehead Warren | Edward Shearburn Marshall | Watson Botanical Exchange Club Job Edward Lousley | 18/5/1905 | SLBI |
| Silene conica | GB, VC5 South Somerset, Minehead Warren | Augustin Ley Edward Shearburn Marshall | Augustin Ley | 12/6/1906 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Monkton Heathfield | Edward Shearburn Marshall | Spencer Henry Bickham | 16/8/1906 | CGE |
| Carex hirta | GB, VC5 South Somerset, Porlock | Edward Shearburn Marshall | Frederick Janson Hanbury | 29/5/1907 | BM |
| Carex hirta | GB, VC5 South Somerset, Porlock | Edward Shearburn Marshall | Arthur Bennett | 29/5/1907 | BM |
| Carex hirta | GB, VC5 South Somerset, Porlock | Edward Shearburn Marshall | | 29/5/1907 | E |
| Carex nigra | GB, VC5 South Somerset, Porlock | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley Edward Shearburn Marshall | 27/5/1907 | BIRM |
| Carex hirta | GB, VC5 South Somerset, Porlock Weir | Edward Shearburn Marshall | | 29/5/1907 | BM |
| Euphrasia confusa | GB, VC5 South Somerset, Simonsbath | Edward Shearburn Marshall | Harold Stuart Thompson | 20/8/1918 | BIRM |
| Euphrasia curta | GB, VC5 South Somerset, Simonsbath | Edward Shearburn Marshall | Watson Botanical Exchange Club Charles Smith Nicholson | 24/8/1918 | BIRM |
| Euphrasia rostkoviana | GB, VC5 South Somerset, Simonsbath | Edward Shearburn Marshall | Watson Botanical Exchange Club Harold Stuart Thompson | 23/8/1918 27/8/1918 | BIRM |
| Salix caprea x cinerea = S. x reichardtii | GB, VC5 South Somerset, Simonsbath | Edward Shearburn Marshall | | 30/8/1918 | CGE |