| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Gilly Tresamble | Catherine Muriel Rob Thomas Jackson Foggitt | Joseph Norman Frankland | 17/9/1926 | LIV |
+ | Koeleria vallesiana | GB, VC6 North Somerset, Brean Down | Charles Edward Hubbard Francis Ballard | Catherine Muriel Rob | 25/6/1934 | MANCH |
+ | Lycopodiella inundata | GB, VC11 South Hampshire, Lyndhurst,??Skymers Minor | D | Catherine Muriel Rob | 18/8/1937 | MANCH |
+ | Hordeum marinum | GB, Hampshire, Hampshire | D G Goddard | Catherine Muriel Rob | 20/7/1934 | MANCH |
| Mentha longifolia | GB, VC17 Surrey, Bullswater Common | Catherine Muriel Rob Joanna Charlotte Davy | Botanical Exchange Club of The British Isles Catherine Muriel Rob | 28/7/1938 | SLBI |
+ | Bromus interruptus | GB, VC17 Surrey, Headley | Cecil Victor Boley Marquand Charles Edward Hubbard H K Shaw | Royal Botanical Gardens, Kew Catherine Muriel Rob | 16/6/1932 | MANCH |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC28 West Norfolk, Harling Road | Catherine Muriel Rob Thomas Jackson Foggitt | Joseph Norman Frankland | 14/9/1926 | LIV |
+ | Hordeum marinum | GB, VC28 West Norfolk, Heacham Marsh | Charles Edward Hubbard | Catherine Muriel Rob | 18/7/1936 | MANCH |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Alfrick | Thomas Jackson Foggitt | Catherine Muriel Rob Joseph Norman Frankland | 11/9/1926 | LIV |
| Plantago lanceolata | GB, VC62 North-east Yorkshire, Carlton in Cleveland | Catherine Muriel Rob | Botanical Exchange Club of The British Isles Flora of North East Yorkshire Catherine Muriel Rob | 7/8/1938 | K |
| Potamogeton alpinus | GB, VC62 North-east Yorkshire, Castle Howard | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 21/7/1937 | SLBI |
| Carex muricata subsp. pairae | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 1/7/1945 | SLBI |
| Carex muricata subsp. pairae | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 1/7/1945 | BM |
| Carex muricata subsp. pairae | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Catherine Muriel Rob | 1/7/1945 | SLBI |
| Salix purpurea | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 6/4/1946 30/6/1946 | SLBI |
| Silene dichotoma | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Botanical Exchange Club of The British Isles | 16/9/1935 | SLBI |
| Veronica filiformis | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 4/5/1946 | K |
| Viola ruralis | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Patrick Martin Hall | 9/5/1938 | SLBI |
| Alnus incana | GB, VC62 North-east Yorkshire, Kepwick | Catherine Muriel Rob | Catherine Muriel Rob | 13/7/1939 | SLBI |
| Potamogeton berchtoldii | GB, VC62 North-east Yorkshire, Kirby Knowle | Catherine Muriel Rob | Catherine Muriel Rob | 2/8/1946 | MANCH |
| Euphrasia nemorosa | GB, VC62 North-east Yorkshire, Knayton | Catherine Muriel Rob | Catherine Muriel Rob | 2/8/1946 | SLBI |
| Euphrasia nemorosa | GB, VC62 North-east Yorkshire, Knayton | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob Eric Lister Swann | 2/8/1946 | BR |
| Agrimonia procera | GB, VC62 North-east Yorkshire, Pilmoor | Catherine Muriel Rob | | 12/7/1947 | SLBI |
| Carex elata | GB, VC62 North-east Yorkshire, Pilmoor | Catherine Muriel Rob | Botanical Exchange Club of The British Isles Catherine Muriel Rob Job Edward Lousley | 17/5/1938 | SLBI |
| Rubus pallidus | GB, VC62 North-east Yorkshire, Pilmoor | Catherine Muriel Rob | William Charles Richard Watson | 21/7/1947 | SLBI |
| Plantago lanceolata | GB, VC62 North-east Yorkshire, Sudfield Catton | Catherine Muriel Rob | Botanical Exchange Club of The British Isles Catherine Muriel Rob | 7/8/1938 | SLBI |
| Sorbus intermedia | GB, VC62 North-east Yorkshire, Sun beck Junction | Catherine Muriel Rob | Botanical Exchange Club of The British Isles Catherine Muriel Rob Job Edward Lousley | 17/6/1938 | SLBI |
| Carex disticha | GB, VC62 North-east Yorkshire, Terrington Carr | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 29/7/1937 | BM |
| Rubus pedemontanus | GB, VC62 North-east Yorkshire, Terrington Carr | Catherine Muriel Rob | | 16/8/1936 | SLBI |
| Rubus pedemontanus | GB, VC62 North-east Yorkshire, Terrington Carr | Catherine Muriel Rob | Botanical Exchange Club of The British Isles | 16/8/1936 | SLBI |
| Potamogeton pectinatus | GB, VC62 North-east Yorkshire, Thirsk | Catherine Muriel Rob | Catherine Muriel Rob | 13/8/1946 | MANCH |
| Salix cinerea x aurita = S. x multinervis | GB, VC62 North-east Yorkshire, Thirsk | Thomas Jackson Foggitt | IRGMA Catherine Muriel Rob Joseph Norman Frankland | 25/8/1929 | LIV |
| Salix cinerea x aurita = S. x multinervis | GB, VC62 North-east Yorkshire, Thirsk | Thomas Jackson Foggitt | IRGMA Catherine Muriel Rob Joseph Norman Frankland | 12/11/1923 | LIV |
| Crepis biennis | GB, VC62 North-east Yorkshire, Topcliffe | Catherine Muriel Rob | Botanical Exchange Club of The British Isles Catherine Muriel Rob | 22/6/1938 | SLBI |
| Rubus nemoralis | GB, VC62 North-east Yorkshire, Yearsley Moor | Catherine Muriel Rob | Botanical Exchange Club of The British Isles Catherine Muriel Rob | 29/7/1937 | SLBI |
| Mentha arvensis | GB, VC64 Mid-west Yorkshire, Cawood | Catherine Muriel Rob | Catherine Muriel Rob | 28/7/1947 | K |
| Rumex pseudoalpinus | GB, VC64 Mid-west Yorkshire, Harrogate | Catherine Muriel Rob | Isaac A Helsby | 7/6/1934 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC64 Mid-west Yorkshire, Nunwick | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 11/9/1947 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC64 Mid-west Yorkshire, Nunwick | Catherine Muriel Rob | Botanical Society of The British Isles Druce Herbarium, Oxford Catherine Muriel Rob | 11/9/1947 | OXF |
+ | Mentha arvensis x spicata = M. x gracilis | GB, VC64 Mid-west Yorkshire, Ripon (near),River Ure | Catherine Muriel Rob | Botanical Society of The British Isles Sledge | 11/9/1947 | MANCH |