+ | Allium oleraceum | | William West | Charles Bailey William West | 7/1878 | MANCH |
| Epilobium alsinifolium | NO, Oppland, Kongsvold, Sor-Trondelag | William West | George Stephen West William West | 8/1909 | BIRM |
| Gentianella amarella | NO, Oppland, Dombas | William West | George Stephen West William West | 8/1909 | BIRM |
| Aethusa cynapium | NO, Sandefjord | William West | George Stephen West William West | 8/1909 | BIRM |
| Fallopia dumetorum | NO, Sandefjord | William West | George Stephen West William West | 8/1909 | BIRM |
| Aira caryophyllea | NO, Kundsho | William West | George Stephen West William West | 8/1909 | BIRM |
| Aira caryophyllea | NO, Kongsvold, Sor-Trondelag | William West | George Stephen West William West | 8/1909 | BIRM |
| Carex chordorrhiza | NO, Hjerkin | William West | George Stephen West William West | 8/1909 | BIRM |
| Carex nigra | NO, Dovre Fjeld / Dovrevold | William West | George Stephen West William West | 8/1909 | BIRM |
| Carex nigra | NO, Dovre Fjeld / Dovrevold | William West | George Stephen West William West | 8/1909 | BIRM |
| Hieracium | NO, Arendel | William West | George Stephen West William West | 8/1909 | BIRM |
| Saxifraga umbrosa | IE, Ambiguous locality (IE), Waterville | William West | George Stephen West William West | 5/1904 | BIRM |
| Dryopteris filix-mas | IE, Ambiguous locality (IE), Killarney | William West | George Stephen West William West | 5/1904 | BIRM |
| Polygala | IE, Ambiguous locality (IE), Killarney | William West | George Stephen West William West | 5/1904 | BIRM |
| Littorella uniflora | IE, VCH39 Co. Antrim, Lough Neagh | William West | George Stephen West William West | 6/1900 | BIRM |
| Orobanche alba | IE, VCH39 Co. Antrim, Cave Hill, Belfast | William West | George Stephen West William West | 8/1892 | BIRM |
| Huperzia selago | IE, VCH36 Tyrone, Lough Neagh | William West | George Stephen West | 5/1900 | BIRM |
| Osmunda regalis | IE, VCH35 West Donegal | William West | George Stephen West William West | 5/1901 | BIRM |
| Eleogiton fluitans | IE, VCH27 West Mayo, Westport | William West | George Stephen West William West | 7/1890 | BIRM |
| Osmunda regalis | IE, VCH27 West Mayo, Westport | William West | George Stephen West William West | 7/1890 | BIRM |
| Eleocharis uniglumis | IE, VCH20 Co. Wicklow, Wicklow | David Moore | George Stephen West William West | 17/5/1863 | BIRM |
| Ceterach officinarum | IE, VCH16 West Galway, Roundstone | William West | George Stephen West | 8/1905 | BIRM |
| Ceterach officinarum | IE, VCH16 West Galway, Roundstone | William West | George Stephen West William West | 8/1905 | BIRM |
| Daboecia cantabrica | IE, VCH16 West Galway, Roundstone | William West | William West | 7/1890 | BIRM |
| Erica mackaiana | IE, VCH16 West Galway, Roundstone | William West | George Stephen West | 8/1905 | BIRM |
| Pinguicula lusitanica | IE, VCH16 West Galway, Roundstone | William West | George Stephen West William West | 7/1890 | BIRM |
| Utricularia intermedia | IE, VCH16 West Galway, Recess | William West | William West | 7/1890 | BIRM |
| Najas flexilis | IE, VCH16 West Galway, Lough Craigduff | A Sanderson | George Stephen West William West | 8/1909 | BIRM |
| Rhynchospora fusca | IE, VCH16 West Galway, Clifden | William West | George Stephen West William West | 7/1890 | BIRM |
| Orobanche alba | IE, VCH9 Co. Clare, The Burren | William West | George Stephen West William West | 7/1890 | BIRM |
| Asplenium adiantum-nigrum | IE, VCH9 Co. Clare, Burren | William West | George Stephen West William West | 7/1890 | BIRM |
| Blackstonia perfoliata | IE, VCH9 Co. Clare, Burren | William West | George Stephen West William West | 7/1890 | BIRM |
| Ceterach officinarum | IE, VCH9 Co. Clare, Burren | William West | George Stephen West | 7/1890 | BIRM |
| Ceterach officinarum | IE, VCH9 Co. Clare, Burren | William West | George Stephen West William West | 7/1890 | BIRM |
| Polystichum setiferum | IE, VCH9 Co. Clare, Burren | William West | George Stephen West William West | 7/1890 | BIRM |
| Adiantum capillus-veneris | IE, VCH9 Co. Clare, Ballyvaughan | William West | George Stephen West William West | 7/1890 | BIRM |
| Anacamptis pyramidalis | IE, VCH9 Co. Clare, Ballyvaughan | William West | George Stephen West William West | 7/1890 | BIRM |
| Asplenium marinum | IE, VCH9 Co. Clare, Ballyvaughan | William West | George Stephen West William West | 7/1890 | BIRM |
| Rubia peregrina | IE, VCH9 Co. Clare, Ballyvaughan | William West | George Stephen West William West | 7/1890 | BIRM |
| Sambucus ebulus | IE, VCH9 Co. Clare, Ballyvaughan | William West | George Stephen West William West | 7/1890 | BIRM |