 | Carex acuta | GB, VC17 Surrey, Ripley | Arthur Langford Still | Edward Charles Wallace Harold Stuart Thompson | 26/5/1934 | BIRM |
 | Carex divisa | GB, VC6 North Somerset, Clifton | Arthur Langford Still Harold Stuart Thompson | Harold Stuart Thompson | 2/6/1934 | BIRM |
 | Carex filiformis | GB, VC6 North Somerset, Sharpham Moor | Arthur Langford Still Harold Stuart Thompson | Harold Stuart Thompson | 11/6/1934 | BIRM |
 | Cirsium tuberosum | GB, VC41 Glamorganshire, Nash Point Cultivated | Arthur Langford Still | Harold Stuart Thompson | 1935 | BIRM |
 | Hymenophyllum tunbrigense | GB, VC14 East Sussex, Eridge Rocks | Arthur Langford Still | Harold Stuart Thompson | 7/1934 | BIRM |
 | Hymenophyllum wilsonii | GB, VC49 Caernarvonshire, Dolbadarn Castle | Arthur Langford Still | Harold Stuart Thompson Edward Charles Wallace | 27/6/1936 | BIRM |
 | Mentha aquatica | GB, East Yorkshire, Warthill | | Arthur Langford Still Harold Stuart Thompson | 9/1885 | BIRM |
+ | Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Arthur Langford Still | | 23/9/1934 | BIRM |
 | Mentha arvensis | GB, VC17 Surrey, Holmwood Common | Arthur Langford Still | Harold Stuart Thompson | 6/9/1935 | BIRM |
 | Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Dulverton | Arthur Langford Still | Harold Stuart Thompson | 27/8/1935 | BIRM |
 | Mentha arvensis x aquatica = M. x verticillata | GB, VC17 Surrey, Bookham Common | Arthur Langford Still | Arthur Langford Still Harold Stuart Thompson | 3/8/1924 | BIRM |
 | Mentha arvensis x aquatica = M. x verticillata | GB, VC21 Middlesex, Stanmore | Arthur Langford Still | Harold Stuart Thompson | 26/8/1938 | BIRM |
 | Mentha arvensis x aquatica = M. x verticillata | GB, VC41 Glamorganshire, Parkmill | Eleanor Vachell | Harold Stuart Thompson Arthur Langford Still | 10/9/1934 | BIRM |
 | Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Buckfastleigh | Arthur Langford Still | Harold Stuart Thompson | 20/8/1935 | BIRM |
 | Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Meavy | William Booth Waterfall | Arthur Langford Still Harold Stuart Thompson | 7/1878 | BIRM |
 | Mentha rubra | GB, VC6 North Somerset, Chewton Mendip | Harold Stuart Thompson | Harold Stuart Thompson Rex Alan Henry Graham Arthur Langford Still | 12/8/1935 to 22/8/1935 | BIRM |
 | Mentha rubra | GB, VC6 North Somerset, Litton Upper Reservoir | Harold Stuart Thompson | Arthur Langford Still Harold Stuart Thompson | 12/8/1935 | BIRM |
 | Mentha rubra | GB, VC17 Surrey, North Holmwood | Arthur Langford Still | Harold Stuart Thompson | 2/9/1935 | BIRM |
 | Mentha spicata | GB, VC6 North Somerset, Clifton Bridge | Harold Stuart Thompson | Arthur Langford Still Harold Stuart Thompson | 3/9/1933 | BIRM |
 | Pimpinella major | GB, VC6 North Somerset, Blackford | Arthur Langford Still | Harold Stuart Thompson | 8/1935 | BIRM |
 | Ranunculus aquatilis | GB, VC12 North Hampshire, Basingstoke Canal at Odiham | Arthur Langford Still | Watson Botanical Exchange Club Edward Charles Wallace Harold Stuart Thompson | 20/5/1933 | BIRM |
 | Silene otites | GB, VC26,VC28, Barnhamcross Common | Arthur Langford Still | Edward Charles Wallace Harold Stuart Thompson | 7/7/1934 | BIRM |
 | Torilis arvensis | GB, VC17 Surrey, Addington, Croydon | Arthur Langford Still | | 8/1936 | BIRM |
 | Trigonella ornithopodioides | GB, VC6 North Somerset, Brean Down | Arthur Langford Still | Harold Stuart Thompson | 6/6/1934 | BIRM |
 | Carex dioica | GB, VC3 South Devon, Budleigh Salterton | Arthur Langford Still | Arthur Langford Still | 6/1930 | BM |
 | Carex disticha | GB, VC12 North Hampshire, Warnborough | Arthur Langford Still | Patrick Martin Hall | 19/5/1933 | BM |
 | Carex disticha | GB, VC27 East Norfolk, Holt Lowes | Arthur Langford Still | | 6/1932 | BM |
 | Carex divisa | GB, VC3 South Devon, Budleigh Salterton | Arthur Langford Still | Arthur Langford Still | 6/1930 | BM |
 | Carex divisa | GB, VC17 Surrey, Mitcham Common | Arthur Langford Still | | 3/7/1937 | BM |
 | Carex lasiocarpa | GB, VC52 Anglesey, Rhoscolyn | Arthur Langford Still | | 14/6/1937 | BM |
 | Carex muricata subsp. pairae | GB, VC52 Anglesey, Bodorgan | Arthur Langford Still | | 29/6/1936 | BM |
 | Carex muricata subsp. pairae | GB, VC52 Anglesey, Bodorgan Station | Arthur Langford Still | Arthur Langford Still | 29/6/1936 | BM |
 | Carex muricata subsp. pairae | GB, VC52 Anglesey, Rhoscolyn | Arthur Langford Still | | 14/6/1937 | BM |
 | Carex muricata subsp. pairae | GB, VC52 Anglesey, South Stack | Arthur Langford Still | Arthur Langford Still | 6/1937 | BM |
 | Carex otrubae x remota = C. x pseudoaxillaris | GB, VC2 East Cornwall, Marhamchurch | Arthur Langford Still | Arthur Langford Still Patrick Martin Hall | 12/6/1939 | BM |
 | Carex otrubae x remota = C. x pseudoaxillaris | GB, VC2 East Cornwall, Marhamchurch | Arthur Langford Still | Patrick Martin Hall | 12/6/1939 | BM |
 | Carex ovalis | GB, VC3 South Devon, Budleigh Salterton | Arthur Langford Still | | 6/1930 | BM |
 | Carex paniculata x remota = C. x boenninghauseniana | GB, VC4 North Devon, Tiverton | Arthur Langford Still | | 1/7/1941 | BM |
 | Carex paniculata x remota = C. x boenninghauseniana | GB, Devon, Tiverton | Arthur Langford Still | Arthur Langford Still | 16/6/1942 | BM |
 | Carex paniculata x remota = C. x boenninghauseniana | GB, VC6 North Somerset, Twerton | Arthur Langford Still | Arthur Langford Still | 16/6/1942 | BM |