| Carex pauciflora | GB, VC92 South Aberdeenshire, Glen Callater | Richard Charles L'Estrange Burges | | 26/6/1951 | BIRM |
| Carex pauciflora | GB, VC98 Argyllshire, Bridge of Orchy | Richard Charles L'Estrange Burges | | 21/6/1952 | BIRM |
| Carex paupercula | GB, VC98 Argyllshire, Bridge of Orchy | Richard Charles L'Estrange Burges | | 21/6/1952 | BIRM |
| Carex paupercula | GB, VC98 Argyllshire, Bridge of Orchy | Richard Charles L'Estrange Burges | | 21/6/1952 | BIRM |
| Carex pendula | GB, VC14 East Sussex, Hawkhurst | Richard Charles L'Estrange Burges | | 10/5/1936 | BIRM |
| Carex pendula | GB, VC37 Worcestershire, Chaddesley Corbett | Richard Charles L'Estrange Burges | | 1936 | BIRM |
| Carex pendula | GB, VC37 Worcestershire, Grimley | Richard Charles L'Estrange Burges | | 28/5/1949 | BIRM |
| Carex pendula | GB, VC37 Worcestershire, Martley | Richard Charles L'Estrange Burges | | 21/7/1935 | BIRM |
| Carex pendula | GB, VC40 Shropshire, Bowhills Dingle | Richard Charles L'Estrange Burges | | 6/5/1937 | BIRM |
| Carex pilulifera | GB, VC39 Staffordshire, Cannock Chase | Richard Charles L'Estrange Burges | | 5/1937 | BIRM |
| Carex pilulifera | GB, VC88 Mid Perthshire, Lawers | Richard Charles L'Estrange Burges | | 11/7/1939 | BIRM |
| Carex pulicaris | GB, VC88 Mid Perthshire, Lawers | Richard Charles L'Estrange Burges | | 11/7/1939 | BIRM |
| Carex pulicaris | GB, VC90 Angus, Glen Fiagh | Richard Charles L'Estrange Burges | | 21/6/1936 | BIRM |
| Carex pulicaris | GB, VC97 West Inverness-shire, Spean Bridge | Richard Charles L'Estrange Burges | | 28/7/1950 | BIRM |
| Carex punctata | GB, VC2 East Cornwall, Austell Bay | Richard Charles L'Estrange Burges | | 12/8/1946 | BIRM |
| Carex punctata | GB, VC2 East Cornwall, Charlestown | Richard Charles L'Estrange Burges | | 12/8/1946 | BIRM |
| Carex punctata | GB, VC9 Dorset, Poole | Richard Charles L'Estrange Burges | | 30/7/1939 | BIRM |
| Carex punctata | GB, VC9 Dorset, Studland | Richard Charles L'Estrange Burges | | 7/7/1949 | BIRM |
| Carex rariflora | GB, VC90 Angus, Caenlochan | Richard Charles L'Estrange Burges | | 15/7/1939 | BIRM |
| Carex rariflora | GB, VC90 Angus, Little Kilrannoch | Richard Charles L'Estrange Burges | | 26/6/1936 | BIRM |
| Carex recta | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 5/8/1950 | BIRM |
| Carex recta | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 5/8/1950 | BIRM |
| Carex recta | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 5/8/1950 | BIRM |
| Carex recta | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 5/8/1950 | BIRM |
| Carex recta | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 28/6/1952 | BIRM |
| Carex recta | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 5/8/1950 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 5/8/1950 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick River | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick River | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick River | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex recta x aquatilis = C. x grantii | GB, VC109 Caithness, Wick River | Richard Charles L'Estrange Burges | | 1/7/1946 | BIRM |
| Carex rigida | GB, VC88 Mid Perthshire, Ben Lawers | Richard Charles L'Estrange Burges | | 5/8/1934 | BIRM |
| Carex rigida | GB, VC90 Angus, Caenlochan | Richard Charles L'Estrange Burges | | 25/6/1936 | BIRM |
| Carex rupestris | GB, VC108,VC105, Cnochan | Richard Charles L'Estrange Burges | | 3/8/1950 | BIRM |