| Arenaria norvegica | GB, VC38 Warwickshire, Birmingham Cultivated IE, VCH9 Co. Clare, Gleninagh Mountain | John William Heslop Harrison | John William Heslop Harrison | 23/6/1961 | BIRM |
| Arenaria norvegica | IE, VCH9 Co. Clare, Gleninagh Mountain | John William Heslop Harrison | | 23/6/1961 | BIRM |
| Carex appropinquata | GB, VC103 Mid Ebudes, Gunna | John William Heslop Harrison | | 6/1940 | E |
| Carex chordorrhiza | GB, VC110 Outer Hebrides, Leverburgh | John William Heslop Harrison | | 8/1941 | E |
| Carex dioica | GB, VC103 Mid Ebudes, Tiree | John William Heslop Harrison | | 6/1940 | BM |
| Carex echinata | GB, VC103 Mid Ebudes, Tiree | John William Heslop Harrison | | 6/1940 | BM |
| Carex maritima | GB, VC110 Outer Hebrides, Barvas | John William Heslop Harrison | | 1/7/1948 | E |
| Carex maritima | GB, VC110 Outer Hebrides, South Harris | John William Heslop Harrison | | 15/8/1941 | BM |
| Carex otrubae | GB, VC103 Mid Ebudes, Tiree | John William Heslop Harrison | John William Heslop Harrison | 6/1940 | BM |
| Carum verticillatum | GB, VC110 Outer Hebrides, South Uist | John William Heslop Harrison | Job Edward Lousley | 8/1946 | SLBI |
| Dactylorhiza incarnata subsp. cruenta | IE, Mayo, Lough Carra | John William Heslop Harrison | John William Heslop Harrison | 23/6/1950 | BIRM |
| Dactylorhiza traunsteineri | IE, VCH23 Westmeath, Lough Owel | John William Heslop Harrison | John William Heslop Harrison | 21/6/1950 | BIRM |
| Digitalis purpurea | GB, VC110 Outer Hebrides, South Uist, Allt Volagir | John William Heslop Harrison | | 16/6/1949 | K |
| Habenaria viride | GB, VC110 Outer Hebrides, Killegray | John William Heslop Harrison | | 23/6/1949 | K |
| Habenaria viride | GB, VC110 Outer Hebrides, Toe Head | John William Heslop Harrison | | 9/7/1950 | K |
| Potamogeton coloratus x gramineus = P. x billupsii | GB, VC110 Outer Hebrides, Loch na Liana Mòire | John William Heslop Harrison | Job Edward Lousley | 8/1946 | SLBI |
| Potamogeton coloratus x gramineus = P. x billupsii | GB, VC110 Outer Hebrides, Loch na Liana Mòire | John William Heslop Harrison | John William Heslop Harrison Robert MacKechnie | 23/8/1946 | E |
| Potamogeton natans x gramineus = P. x sparganiifolius | GB, VC110 Outer Hebrides, Benbecula | John William Heslop Harrison | John William Heslop Harrison | 25/8/1947 | SLBI |
| Potamogeton natans x gramineus = P. x sparganiifolius | GB, VC110 Outer Hebrides, Loch na Liana Mòire | John William Heslop Harrison | Robert MacKechnie | 23/8/1946 | E |
| Potamogeton natans x gramineus = P. x sparganiifolius | GB, VC110 Outer Hebrides, Loch na Liana Mòire | John William Heslop Harrison | | 23/8/1946 | E |
| Spiranthes romanzoffiana | CA, Alberta, Edmonton | E H Moss | John William Heslop Harrison | 7/8/1959 | BIRM |
| Stachys sylvatica | GB, VC110 Outer Hebrides, Harris | John William Heslop Harrison | | 12/7/1950 | K |
| Stachys sylvatica | GB, VC110 Outer Hebrides, Kyles Stuley | John William Heslop Harrison | | 8/1945 | K |
| Stachys sylvatica | GB, VC110 Outer Hebrides, Rodel Bay | John William Heslop Harrison | | 12/7/1950 | K |
| Stachys sylvatica | GB, VC110 Outer Hebrides, South Uist | John William Heslop Harrison | | 8/1939 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC110 Outer Hebrides, Barra Island | John William Heslop Harrison | | 8/1939 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC110 Outer Hebrides, Barra Island | John William Heslop Harrison | | 8/1939 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC110 Outer Hebrides, Harris | John William Heslop Harrison | | 5/8/1950 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC110 Outer Hebrides, Harris | John William Heslop Harrison | | 28/8/1950 | K |
| Trientalis europaea | GB, VC68 North Northumberland, Alnwick | | John William Heslop Harrison | 6/1942 | BIRM |
| Veronica catenata | GB, VC110 Outer Hebrides, Berneray | John William Heslop Harrison | | 26/7/1950 | K |