| Carex microglochin | GB, VC88 Mid Perthshire, Meall Garbh | Richard Charles L'Estrange Burges | | 11/7/1939 | BIRM |
| Carex montana | GB, VC36 Herefordshire, Symonds Yat | Richard Charles L'Estrange Burges | | 16/5/1936 | BIRM |
| Carex montana | GB, VC37 Worcestershire, Wyre Forest | Richard Charles L'Estrange Burges | | 18/5/1939 | BIRM |
| Carex montana | GB, VC40 Shropshire, Wyre Forest | Richard Charles L'Estrange Burges | | 21/5/1950 | BIRM |
| Carex nigra | GB, VC39 Staffordshire, Norton | Richard Charles L'Estrange Burges | | 5/1937 | BIRM |
| Carex nigra | GB, VC62 North-east Yorkshire, Pilmoor | Richard Charles L'Estrange Burges | | 25/6/1938 | BIRM |
| Carex nigra | GB, VC108 West Sutherland, Altnaharra | Richard Charles L'Estrange Burges | | 26/6/1952 | BIRM |
| Carex nigra | IE, Kerry, Galways Bridge | Richard Charles L'Estrange Burges | | 10/6/1937 | BIRM |
| Carex nigra | IE, VCH16 West Galway, Maam | Richard Charles L'Estrange Burges | | 14/6/1937 | BIRM |
| Carex norvegica | GB, VC90 Angus, Glen Fiagh | Richard Charles L'Estrange Burges | | 22/6/1936 | BIRM |
| Carex oederi | GB, VC59 South Lancashire, Ainsdale | Richard Charles L'Estrange Burges | | 16/7/1939 | BIRM |
| Carex oederi | IE, Kerry, Caragh Lake | Richard Charles L'Estrange Burges | | 9/6/1937 | BIRM |
| Carex oederi | IE, VCH39 Co. Antrim, Lough Neagh | Richard Charles L'Estrange Burges | | 9/8/1949 | BIRM |
| Carex ornithopoda | GB, VC57 Derbyshire, Miller's Dale | Richard Charles L'Estrange Burges | | 25/6/1950 | BIRM |
| Carex ornithopoda | GB, VC57 Derbyshire, Miller's Dale | Richard Charles L'Estrange Burges | | 12/5/1937 | BIRM |
| Carex ornithopoda | GB, VC69 Westmorland, Orton Scar | Richard Charles L'Estrange Burges | | 30/5/1950 | BIRM |
| Carex otrubae | GB, VC33 East Gloucestershire, Gloucester | Richard Charles L'Estrange Burges | Job Edward Lousley | 19/6/1944 | SLBI |
| Carex ovalis | GB, VC43 Radnorshire, Stanner Rocks | Richard Charles L'Estrange Burges | | 31/5/1937 | BIRM |
| Carex ovalis | GB, VC57 Derbyshire, Matlock | Richard Charles L'Estrange Burges | | 6/6/1942 | BIRM |
| Carex ovalis | GB, VC90 Angus, Glen Doll | Richard Charles L'Estrange Burges | | 28/6/1936 | BIRM |
| Carex ovalis | GB, VC97 West Inverness-shire, Arisaig | Richard Charles L'Estrange Burges | | 30/7/1948 | BIRM |
| Carex pallescens | GB, VC62 North-east Yorkshire, Old Byland | Richard Charles L'Estrange Burges | | 24/6/1938 | BIRM |
| Carex pallescens | GB, VC65 North-west Yorkshire, Teesdale,High Force | Richard Charles L'Estrange Burges | | 23/6/1934 | BIRM |
| Carex pallescens | GB, VC97 West Inverness-shire, Arisaig | John Norton Mills Richard Charles L'Estrange Burges | John Norton Mills | 30/7/1948 | MANCH |
| Carex pallescens | GB, VC97 West Inverness-shire, Glenfinnan | Richard Charles L'Estrange Burges | | 23/6/1952 | BIRM |
| Carex panicea | GB, VC36 Herefordshire, Eardisley | Richard Charles L'Estrange Burges | | 19/5/1952 | BIRM |
| Carex panicea | IE, VCH20 Co. Wicklow, Ballymen Glen | Richard Charles L'Estrange Burges | | 6/6/1937 | BIRM |
| Carex paniculata | GB, VC37 Worcestershire, Fenny Rough | Richard Charles L'Estrange Burges | | 29/5/1938 | BIRM |
| Carex paniculata | GB, VC40 Shropshire, Crose Mere | Richard Charles L'Estrange Burges | | 19/6/1938 | BIRM |
| Carex paniculata | GB, VC50 Denbighshire, Chirk | Richard Charles L'Estrange Burges | | 7/5/1938 | BIRM |
| Carex paniculata | GB, VC62 North-east Yorkshire, Castle Howard | Richard Charles L'Estrange Burges | | 24/6/1938 | BIRM |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC11 South Hampshire, Holmsley | Richard Charles L'Estrange Burges | | 30/6/1949 | BIRM |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC11 South Hampshire, Holmsley Enclosure | Richard Charles L'Estrange Burges | | 30/6/1949 | BIRM |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC62 North-east Yorkshire, Castle Howard | Richard Charles L'Estrange Burges | | 24/6/1938 | BIRM |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC63 South-west Yorkshire, Bingley | Richard Charles L'Estrange Burges | | 19/7/1947 | BIRM |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC63 South-west Yorkshire, Bingley | Richard Charles L'Estrange Burges | | 19/7/1947 | BIRM |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC63,VC64, Bingley | Richard Charles L'Estrange Burges | | 19/7/1947 | BIRM |
| Carex pauciflora | GB, VC88 Mid Perthshire, Rannoch | Richard Charles L'Estrange Burges | | 25/6/1934 | BIRM |
| Carex pauciflora | GB, VC88 Mid Perthshire, Rannoch Moor | Richard Charles L'Estrange Burges | | 12/7/1939 | BIRM |
| Carex pauciflora | GB, VC89 East Perthshire, Sow of Atholl | Richard Charles L'Estrange Burges | | 20/6/1936 | BIRM |