| Herniaria glabra | GB, VC113 Channel Islands, Jersey, Saint Aubins Bay | Louis Arsene | Isaac A Helsby | | SLBI |
| Centaurium erythraea | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 21/6/1921 | SLBI |
| Hirschfeldia incana | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Louis Arsene | 15/7/1921 | SLBI |
| Hirschfeldia incana | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Job Edward Lousley | 15/7/1921 | SLBI |
| Silene gallica | GB, VC113 Channel Islands, Jersey,West Mount | Louis Arsene | Isaac A Helsby | 30/4/1925 | SLBI |
| Ranunculus paludosus | GB, VC113 Channel Islands, Jersey | Louis Arsene | Isaac A Helsby | 1/5/1925 | SLBI |
| Juncus capitatus | GB, VC113 Channel Islands, Jersey, Saint Catherine's Bay | Louis Arsene | Isaac A Helsby | 10/5/1925 | SLBI |
| Carex divisa | GB, VC113 Channel Islands, Jersey, Saint Ouens Pond | Louis Arsene | Botanical Exchange Club of The British Isles Frederick Janson Hanbury | 16/6/1925 | BM |
| Carex divisa | GB, VC113 Channel Islands, Jersey, Saint Ouens Pond | Louis Arsene | Charles Edgar Salmon | 16/6/1925 | BM |
| Carex divisa | GB, VC113 Channel Islands, Saint Ouen's Pond | Louis Arsene | William Charles Barton | 16/6/1925 | BM |
| Lotus angustissimus | GB, VC113 Channel Islands, Jersey, Saint Catherine's Bay | Louis Arsene | Isaac A Helsby | 6/7/1925 | SLBI |
| Lotus subbiflorus | GB, VC113 Channel Islands, Jersey, Saint Catherine's Bay | Louis Arsene | Isaac A Helsby | 6/7/1925 | SLBI |
| Dianthus gallicus | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Isaac A Helsby | 7/7/1925 | SLBI |
| Otanthus maritimus | GB, VC113 Channel Islands, Jersey, Saint Ouen's Bay | Louis Arsene | Harold Stuart Thompson | 31/8/1925 | BIRM |
+ | Romulea columnae | GB, VC113 Channel Islands, Jersey,Ouaisne | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 3/3/1926 | MANCH |
| Montia fontana subsp. amporitana | GB, VC113 Channel Islands, Jersey, Ouaisne | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 29/3/1926 | SLBI |
| Senecio lanuginosus | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Isaac A Helsby | 4/4/1926 | SLBI |
| Senecio lanuginosus | GB, VC113 Channel Islands, Quenvais | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 4/4/1926 | SLBI |
| Polygala vulgaris subsp. collina | GB, VC113 Channel Islands, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 5/4/1926 | SLBI |
+ | Viola kitaibeliana | GB, VC113 Channel Islands, Jersey, Saint Ouen's Bay | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 15/4/1926 | MANCH |
+ | Juncus capitatus | GB, VC113 Channel Islands, Jersey, Saint Catherine's Bay | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 7/5/1926 | MANCH |
| Orchis morio | GB, VC113 Channel Islands, Jersey, Saint Ouens Pond | Louis Arsene | | 8/5/1926 | K |
+ | Silene nutans | GB, VC113 Channel Islands, Guernsey,Saint Peters Port | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 18/5/1926 | MANCH |
| Silene nutans subsp. dubia | GB, VC113 Channel Islands, Jersey, Saint Peters | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 18/5/1926 | SLBI |
| Trifolium strictum | GB, VC113 Channel Islands, Jersey | Louis Arsene | Isaac A Helsby | 18/5/1926 | SLBI |
| Trifolium strictum | GB, VC113 Channel Islands, Jersey,La Moye | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 18/5/1926 | SLBI |
| Silene gallica | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 21/5/1926 | SLBI |
| Coincya monensis | GB, VC113 Channel Islands, Jersey,Corbiere | Louis Arsene | Isaac A Helsby | 6/6/1926 | SLBI |
| Polycarpon tetraphyllum | GB, VC113 Channel Islands, Saint Lawrence's Valley, Jersey | Louis Arsene | Isaac A Helsby | 8/6/1926 | SLBI |
+ | Tuberaria guttata | GB, VC113 Channel Islands, Jersey,Beauport | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 8/6/1926 | MANCH |
| Tuberaria guttata | GB, VC113 Channel Islands, Jersey,Beauport | Louis Arsene | Isaac A Helsby | 8/6/1926 | SLBI |
+ | Allium sphaerocephalon | GB, VC113 Channel Islands, Jersey,Saint Austin's Bay | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 10/6/1926 | MANCH |
| Jasione montana | GB, VC113 Channel Islands, Jersey, L'Etac | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 15/6/1926 | SLBI |
| Jasione montana | GB, VC113 Channel Islands, L'Etac, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Louis Arsene | 15/6/1926 | MANCH |
| Petrorhagia prolifera | GB, VC113 Channel Islands, Les Quennevais | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 15/6/1926 7/7/1926 | SLBI |
| Dianthus deltoides | GB, VC113 Channel Islands, Jersey, Saint Helier | Louis Arsene | | 16/6/1926 | K |
| Scabiosa atropurpurea | GB, VC113 Channel Islands, L'Etacq | Louis Arsene | Isaac A Helsby | 26/6/1926 | SLBI |
| Scrophularia scorodonia | GB, VC113 Channel Islands, Jersey | Louis Arsene | Watson Botanical Exchange Club Job Edward Lousley | 1/7/1926 | SLBI |
| Scrophularia scorodonia | GB, VC113 Channel Islands, Jersey, Saint Saviour | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 1/7/1926 | SLBI |
+ | Matthiola sinuata | GB, VC113 Channel Islands, Jersey, Saint Ouen's Bay | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 7/7/1926 | MANCH |