| Avena fatua | GB, VC85 Fifeshire, Burntisland | John Thomas Irvine Boswell-Syme | Augustin Ley | 10/1887 | BIRM |
| Epilobium anagallidifolium | GB, VC92 South Aberdeenshire, Lochnagar | John Gilbert Baker John Thomas Irvine Boswell-Syme | George Stephen West | 9/1887 | BIRM |
| Anthoxanthum odoratum | GB, VC17 Surrey, Goldaming | John Thomas Irvine Boswell-Syme | | 6/1887 | BON |
| Carex maritima | GB, VC90 Angus, Forfar | Thomas Blizzard Bell | Frederick Janson Hanbury John Thomas Irvine Boswell-Syme | 7/1886 | BM |
| Carex ovalis | GB, VC111 Orkney, Piggar | Henry Halcro Johnston | Frederick Janson Hanbury John Thomas Irvine Boswell-Syme | 5/8/1885 | BM |
| Agrostis stolonifera | GB, VC85 Fifeshire, Balmuto | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Augustin Ley | 9/1883 | BIRM |
| Alyssum alyssoides | GB, VC85 Fifeshire, Balmuto | John Thomas Irvine Boswell-Syme | William Hadden Beeby | 8/1883 | SLBI |
| Cirsium heterophyllum x palustre = C. x wankelii | GB, VC97 West Inverness-shire, Glengarry Cultivated | John Thomas Irvine Boswell-Syme | William Hadden Beeby | 8/1883 | SLBI |
| Trifolium agrarium | GB, VC85 Fifeshire, Balmuto | John Thomas Irvine Boswell-Syme | William Hadden Beeby | 8/1883 | SLBI |
| Carex maritima | GB, VC111 Orkney, Birsay | Henry Halcro Johnston | Frederick Janson Hanbury John Thomas Irvine Boswell-Syme | 27/7/1883 | BM |
| Carex arenaria | GB, VC1 West Cornwall, Scilly Isles,Saint Marys | James Cunnack | Frederick Janson Hanbury John Thomas Irvine Boswell-Syme | 15/6/1883 | BM |
| Sorbus aria | GB, VC17 Surrey, Reigate Hill | John Thomas Irvine Boswell-Syme | Augustin Ley | 1883 | BIRM |
| Agrostis gigantea | GB, VC91 Kincardineshire, Maryculter | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles | 9/1882 | ABS |
| Agrostis gigantea | GB, VC91 Kincardineshire, Maryculter | John Thomas Irvine Boswell-Syme | Augustin Ley | 9/1882 | BIRM |
| Agrostis stolonifera | GB, VC91 Kincardineshire | John Thomas Irvine Boswell-Syme | London Botanical Exchange Club Robert Large Baker | 9/1882 | BIRM |
| Paris quadrifolia | GB, VC91 Kincardineshire, Corbie, Kingcausie | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Charles Bailey | 9/1882 | MANCH |
| Paris quadrifolia | GB, VC91 Kincardineshire, Corbie, Kingcausie | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles | 9/1882 | BIRM |
| Paris quadrifolia | GB, VC91 Kincardineshire, Corbie, Kingcausie | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles William Hadden Beeby | 9/1882 | SLBI |
| Paris quadrifolia | GB, VC91 Kincardineshire, Kingcausie | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Charles Bailey | 9/1882 | MANCH |
| Carex divulsa subsp. divulsa | GB, VC17 Surrey, Putney | John Thomas Irvine Boswell-Syme | Frederick Janson Hanbury John Thomas Irvine Boswell-Syme | 8/1882 | BM |
| Carex arenaria | GB, VC106 East Ross & Cromarty, Tain | John Thomas Irvine Boswell-Syme | John Thomas Irvine Boswell-Syme | 7/1882 | BM |
| Carex acuta | GB, VC17 Surrey, Richmond | John Thomas Irvine Boswell-Syme | George Stephen West | 6/1882 | BIRM |
| Mentha rubra | GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme | Augustin Ley | 10/1881 | BIRM |
| Persicaria lapathifolia | GB, VC85 Fifeshire, Kinghorn Loch | John Thomas Irvine Boswell-Syme | William Hadden Beeby | 10/1881 | SLBI |
| Carex hostiana | GB, VC111 Orkney, Piggar GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles London Botanical Exchange Club Robert Large Baker | 8/1881 | BIRM |
| Galeopsis bifida | GB, VC85 Fifeshire, Balmuto | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles William Hadden Beeby | 8/1881 | SLBI |
| Galeopsis bifida | GB, VC85 Fifeshire, Balmuto | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Allan Octavian Hume Frederick Townsend | 8/1881 | SLBI |
| Galeopsis bifida | GB, VC85 Fifeshire, Balmuto | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles William Booth Waterfall | 8/1881 | K |
| Hieracium dewari | GB, VC87 West Perthshire, Glen Devon, Downhill | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles William Hadden Beeby | 8/1881 | SLBI |
+ | Rumex longifolius x obtusifolius = R. x hybridus | GB, VC87 West Perthshire | John Thomas Irvine Boswell-Syme | Charles Bailey | 8/1881 | MANCH |
| Rumex rupestris | GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Augustin Ley | 8/1881 | BIRM |
+ | Rumex rupestris | GB, VC113 Channel Islands | John Thomas Irvine Boswell-Syme | Charles Bailey | 8/1881 | MANCH |
+ | Rumex rupestris | GB, VC113 Channel Islands Cultivated | John Thomas Irvine Boswell-Syme | Charles Bailey | 8/1881 | MANCH |
+ | Rumex rupestris | GB, VC113 Channel Islands Cultivated | John Thomas Irvine Boswell-Syme | | 8/1881 | MANCH |
| Rumex rupestris x pulcher = R. x trimenii | GB, Devon, Plymouth GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme Thomas Richard Archer Briggs | | 8/1881 | MANCH |
| Rumex rupestris x pulcher = R. x trimenii | GB, VC3 South Devon, Plymouth GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme | | 8/1881 | MANCH |
| Caltha palustris var. guerangerii | GB, VC85 Fifeshire, Balmuto | Hewett Cottrell Watson | Charles Bailey John Thomas Irvine Boswell-Syme | 7/1881 | MANCH |
| Caltha palustris var. radicans | GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme | Charles Bailey | 7/1881 | BIRM |
| Caltha palustris var. radicans | GB, VC85 Fifeshire, Balmuto Cultivated | Hewett Cottrell Watson John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Allan Octavian Hume Frederick Townsend | 7/1881 | SLBI |
+ | Poa glauca | GB, VC85 Fifeshire | John Thomas Irvine Boswell-Syme | Charles Bailey | 7/1881 | MANCH |