| Matthiola sinuata | GB, VC113 Channel Islands, Jersey, Saint Ouen's Bay | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 5/6/1926 7/7/1926 | SLBI |
+ | Petrorhagia nanteuilii | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 7/7/1926 | MANCH |
| Dianthus gallicus | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Isaac A Helsby | 10/7/1926 | SLBI |
| Eriophorum angustifolium | GB, VC113 Channel Islands, Jersey, Petit Port | Louis Arsene | Botanical Exchange Club of The British Isles Louis Arsene | 10/7/1926 | MANCH |
| Lavatera cretica | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 15/7/1926 | SLBI |
| Malva parviflora | GB, VC113 Channel Islands, Jersey, Saint Helier | Louis Arsene | Isaac A Helsby | 15/7/1926 | SLBI |
| Parentucellia viscosa | GB, VC113 Channel Islands, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 15/7/1926 | SLBI |
| Scirpus americanus | GB, VC113 Channel Islands, Jersey, Saint Ouen's | Louis Arsene | Botanical Exchange Club of The British Isles Louis Arsene Richard Charles L'Estrange Burges | 15/7/1926 | BIRM |
| Thesium | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 15/7/1926 | SLBI |
| Vicia cassubica | GB, VC113 Channel Islands, Jersey, Saint Peters | Louis Arsene | Isaac A Helsby | 15/7/1926 | SLBI |
| Fumaria capreolata | GB, VC113 Channel Islands, Saint Saviour's, Guernsey | Louis Arsene | Isaac A Helsby | 16/7/1926 | SLBI |
| Spergularia media | GB, VC113 Channel Islands, Jersey, Saint Ouen's | Louis Arsene | Isaac A Helsby | 20/7/1926 | SLBI |
| Centaurea paniculata | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Isaac A Helsby Louis Arsene | 26/7/1926 | SLBI |
| Polygonum maritimum | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Isaac A Helsby | 27/7/1926 | SLBI |
+ | Lythrum hyssopifolia | GB, VC113 Channel Islands, Jersey, Saint Catherine's Bay | Louis Arsene | Botanical Society & Exchange Club of The British Isles | 1/8/1926 | MANCH |
| Lythrum hyssopifolia | GB, VC113 Channel Islands, Jersey, Saint Catherine's Bay | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 1/8/1926 | SLBI |
+ | Muscari neglectum | GB, VC113 Channel Islands, Jersey,La Rocque | Ariste | Botanical Society & Exchange Club of The British Isles Louis Arsene | 29/4/1927 | MANCH |
| Geranium purpureum | GB, VC113 Channel Islands, Jersey, La Haule | Benard Ariste | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 15/5/1927 | SLBI |
| Arum italicum | GB, VC113 Channel Islands, Jersey St Sauveur | Benard Ariste | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 29/5/1927 | SLBI |
| Senecio cineraria | GB, VC113 Channel Islands, Jersey, St Aubin's | Ariste | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 18/6/1927 | SLBI |
| Centaurea jacea | GB, VC113 Channel Islands, Don Bridge, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 10/7/1927 | SLBI |
| Centaurea nigra x jacea = C. x moncktonii | GB, VC113 Channel Islands, Don Bridge, Jersey | Benard Ariste | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 10/7/1927 | SLBI |
| Ludwigia palustris | CA, Quebec, Laprairie | Louis Arsene | Job Edward Lousley Louis Arsene | 9/8/1927 | SLBI |
| Oenanthe pimpinelloides | GB, VC113 Channel Islands, Saint Saviour's Jersey | Louis Arsene | Isaac A Helsby | 11/10/1927 | SLBI |
| Inula crithmoides | GB, VC113 Channel Islands, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 1/1/1928 | SLBI |
| Viola nana | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Isaac A Helsby | 14/4/1928 | SLBI |
| Silene conica | GB, VC113 Channel Islands, Jersey, Saint Ouen's Bay | Louis Arsene | Botanical Exchange Club of The British Isles Louis Arsene | 14/5/1928 | K |
| Silene conica | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 14/5/1928 | SLBI |
| Silene conica | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Charles Edward Britton Louis Arsene | Botanical Exchange Club of The British Isles Louis Arsene | 14/5/1928 | K |
| Silene conica | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Louis Arsene | 14/5/1928 | K |
| Silene conica | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles | 14/5/1928 | K |
| Silene conica | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles J Fraser | 14/5/1928 | K |
| Silene conica | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Louis Arsene Ronald Melville | 14/5/1928 | K |
| Inula crithmoides | GB, VC113 Channel Islands, Jersey | Louis Arsene | Isaac A Helsby | 6/1928 | SLBI |
| Vicia sativa | GB, VC113 Channel Islands, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 1/6/1928 | SLBI |
| Anthyllis maritima | GB, VC113 Channel Islands, Jersey, Quennevais | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 20/6/1928 | SLBI |
| Vicia lutea | GB, VC113 Channel Islands, Saint Brelade, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 20/6/1928 21/7/1928 | SLBI |
| Sibthorpia europaea | GB, VC113 Channel Islands, Saint Brelade, Jersey | Louis Arsene | Louis Arsene | 21/6/1928 | K |
| Armeria maritima | GB, VC113 Channel Islands, Jersey,La Moye | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 1/7/1928 | SLBI |
| Daucus maritimus | GB, VC113 Channel Islands, Saint Ouen's Bay, Jersey | Louis Arsene | Botanical Exchange Club of The British Isles Job Edward Lousley | 1/7/1928 | SLBI |