| Hypericum hircinum | IE, VCH4,VCH5, Glanmire | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 9/1905 | SLBI |
| Hypericum hircinum | IE, VCH4,VCH5, Glanmire | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 7/1905 | SLBI |
| Juncus squarrosus | IE, VCH1,VCH3, Adrigole | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 8/1896 | SLBI |
| Mentha aquatica x spicata = M. x piperita | IE, VCH11 Co. Kilkenny, Castlecomer | Robert Albert Phillips | | 27/8/1933 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, Cork, Rostallan | Robert Albert Phillips | Robert Albert Phillips | 9/1898 | DBN |
| Najas marina | GB, VC58,VC59, Reddish | John Whitehead | Allan Octavian Hume Robert Albert Phillips | 8/1883 | SLBI |
| Oenanthe pimpinelloides | IE, VCH5 East Cork, Trabolgan | Robert Albert Phillips | Allan Octavian Hume | 7/1904 | SLBI |
| Pinguicula grandiflora | IE, VCH4 Mid Cork, Inniscarra | Robert Albert Phillips | Robert Albert Phillips | 6/1899 | SLBI |
| Potamogeton gramineus | IE, Kerry, Killorglin | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 7/1900 | SLBI |
| Potamogeton lucens | IE, VCH3 West Cork, Inchigeelagh | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 8/1899 | SLBI |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Witcham Meadlands | Alfred Fryer | Allan Octavian Hume Robert Albert Phillips | 9/8/1887 | SLBI |
| Ranunculus tripartitus | IE, VCH3 West Cork, Baltimore | Robert Albert Phillips | Robert Albert Phillips | 4/1897 | SLBI |
+ | Ranunculus tripartitus | IE, Co Cork,Baltimore | Robert Albert Phillips | Charles Bailey Henry & James Groves | 6/1897 | MANCH |
| Rosa agrestis | IE, VCH15 South-east Galway, Lough Derg | Robert Albert Phillips | Allan Octavian Hume | 10/7/1906 | SLBI |
| Rosa agrestis | IE, VCH16 West Galway, Portumna | Robert Albert Phillips | | 7/1903 | SLBI |
| Rosa micrantha | IE, VCH5 East Cork, Castletownroche | Robert Albert Phillips | Robert Albert Phillips | 7/1900 | SLBI |
| Rosa micrantha | IE, VCH16 West Galway, Portumna | Robert Albert Phillips | Allan Octavian Hume | 10/7/1906 | SLBI |
| Rubus rubritinctus | IE, Cork, The Glen | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 9/1905 | SLBI |
| Rubus rubritinctus | IE, Cork, The Glen | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 9/1905 | SLBI |
| Rubus ulmifolius | IE, VCH9 Co. Clare, Cratloe | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 8/1904 | SLBI |
| Rubus ulmifolius | IE, VCH9 Co. Clare, Cratloe | Robert Albert Phillips | Allan Octavian Hume | 8/1904 | SLBI |
| Rumex maritimus | IE, VCH4,VCH5, Buttevant Castle | Robert Albert Phillips | Allan Octavian Hume | 11/8/1906 | SLBI |
| Rumex maritimus | IE, VCH4,VCH5, Buttevant Castle | Robert Albert Phillips | Allan Octavian Hume | | SLBI |
| Salix fragilis x alba = S. x rubens | IE, VCH8 Co. Limerick, Limerick | George Fogerty Robert Albert Phillips | Set of British Willows | 10/5/1912 20/7/1912 | CGE |
| Salix fragilis x alba = S. x rubens | IE, VCH8 Co. Limerick, Limerick | George Fogerty Robert Albert Phillips | Set of British Willows | 10/5/1912 20/7/1912 | CGE |
| Salix fragilis x alba = S. x rubens | IE, Ambiguous locality (IE), Limerick | George Fogerty Robert Albert Phillips | Set of British Willows Spencer Henry Bickham | 10/5/1912 20/7/1912 | CGE |
| Sambucus nigra | IE, VCH15 South-east Galway, Gort | Robert Albert Phillips | Frederick Townsend Robert Albert Phillips | 7/1902 | SLBI |
| Saxifraga hirsuta | GB, VC17 Surrey, Norwood Cultivated | William Henry Griffin | Allan Octavian Hume Robert Albert Phillips | 27/5/1908 | SLBI |
| Saxifraga hirsuta | IE, VCH3 West Cork, Glengariff | Robert Albert Phillips | | 3/6/1906 | SLBI |
| Saxifraga hirsuta | IE, VCH3 West Cork, Glengariff | Robert Albert Phillips | | 4/6/1906 | SLBI |
| Saxifraga umbrosa x hirsuta = S. x geum | VCH3, Adrigole | Robert Albert Phillips | Allan Octavian Hume | 7/1894 | SLBI |
| Saxifraga umbrosa x hirsuta = S. x geum | IE, VCH1,VCH3, Adrigole | Robert Albert Phillips | Allan Octavian Hume | 7/1894 | SLBI |
| Saxifraga umbrosa x hirsuta = S. x geum | IE, VCH3 West Cork, Glengariff | Robert Albert Phillips | Allan Octavian Hume | 4/6/1906 | SLBI |
| Saxifraga umbrosa x hirsuta = S. x geum | IE, VCH3 West Cork, Glengariff | Robert Albert Phillips | Allan Octavian Hume | 4/6/1906 | SLBI |
| Saxifraga umbrosa x hirsuta = S. x geum | IE, VCH3 West Cork, Glengarriff | Robert Albert Phillips | Allan Octavian Hume | 4/6/1906 | SLBI |
| Sedum rosea | IE, VCH1,VCH3, Hungry Hill | Robert Albert Phillips | Allan Octavian Hume | 7/1894 | SLBI |
| Senecio squalidus | IE, Cork, Cork | Robert Albert Phillips | Allan Octavian Hume | 5/6/1906 | SLBI |
| Senecio squalidus | IE, Cork, Cork, The Glen | Robert Albert Phillips | Allan Octavian Hume | 5/6/1906 | SLBI |
| Senecio squalidus x vulgaris = S. x baxteri | IE, Cork, Cork | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 6/1904 | SLBI |
| Sium latifolium | IE, VCH16 West Galway, Portumna | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 7/1903 | SLBI |
| Solidago virgaurea var. cambrica | IE, VCH1,VCH3, Hungry Hill | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 7/1894 | SLBI |
| Spartina maritima x alterniflora = S. x townsendii | IE, VCH3 West Cork, Timoleague | Robert Albert Phillips | | 8/1940 | GALW |
| Subularia aquatica | IE, VCH16 West Galway, Ballynahinch | Robert Albert Phillips | | 2/9/1928 | GALW |
| Teucrium chamaedrys | IE, Cork, Cork | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 7/1897 | SLBI |
| Tuberaria guttata | IE, VCH3 West Cork, Hare Island | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 8/1902 | SLBI |
| Tuberaria guttata subsp. breweri | IE, VCH3 West Cork, Hare Island | Robert Albert Phillips | Allan Octavian Hume Frederick Townsend | 8/1902 | SLBI |
| Vaccinium oxycoccos | IE, VCH23 Westmeath, Athlone | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 8/1902 | SLBI |
| Viola tricolor subsp. curtisii | IE, VCH3 West Cork, Barloge | Robert Albert Phillips | Allan Octavian Hume Robert Albert Phillips | 8/1896 | SLBI |