+ | 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 |
+ | 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 |
+ | Mentha aquatica x spicata = M. x piperita | GB, VC66 County Durham, Teesdale | Catherine Muriel Rob | Catherine Muriel Rob | 14/4/1946 | MANCH |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Carex divulsa | GB, VC65 North-west Yorkshire, Coverham | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 4/7/1945 | BM |
| Carex divulsa subsp. leersii | GB, VC65 North-west Yorkshire, Coverham | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 4/7/1945 | BM |
| Carex muricata subsp. pairae | GB, VC65 North-west Yorkshire, Coverham | Catherine Muriel Rob | Botanical Society & Exchange Club of The British Isles Catherine Muriel Rob | 4/7/1945 | SLBI |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC65 North-west Yorkshire, Tanfield | Catherine Muriel Rob | Botanical Society of The British Isles Catherine Muriel Rob | 20/7/1947 | MANCH |
| 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 |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC69 Westmorland, Eamont Bridge | Catherine Muriel Rob | | 18/9/1949 | MANCH |
| Silene dichotoma | GB, VC62 North-east Yorkshire, Catton | Catherine Muriel Rob | Botanical Exchange Club of The British Isles | 16/9/1935 | SLBI |
| Cuscuta campestris | GB, VC65 North-west Yorkshire, Brafferton | Catherine Muriel Rob | Botanical Exchange Club of The British Isles | 29/9/1935 | SLBI |
+ | Lycopodiella inundata | GB, VC11 South Hampshire, Lyndhurst,??Skymers Minor | D | Catherine Muriel Rob | 18/8/1937 | MANCH |
| 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 |
| 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 |
+ | Linnaea borealis | GB, VC90 Angus, Base of Craig Marsh, Clova | Catherine Muriel Rob T G Foggitt | | 7/1901 | LIV |
| 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 |
| 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 |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Alfrick | Thomas Jackson Foggitt | Catherine Muriel Rob Joseph Norman Frankland | 11/9/1926 | LIV |
+ | Hordeum marinum | GB, Hampshire, Hampshire | D G Goddard | Catherine Muriel Rob | 20/7/1934 | MANCH |
| Callitriche | GB, VC69 Westmorland, Esthwaite Water | Catherine Muriel Rob Douglas Montague Heath | Douglas Montague Heath | 6/9/1936 | BIRM |
| Najas flexilis | GB, VC69 Westmorland, Esthwaite Water | Catherine Muriel Rob Douglas Montague Heath Gertrude Foggitt | Douglas Montague Heath | 8/9/1936 | BIRM |
| Potamogeton berchtoldii | GB, VC69 Westmorland, Esthwaite Water | Catherine Muriel Rob Douglas Montague Heath Gertrude Foggitt | Douglas Montague Heath | 8/9/1936 | BIRM |
| Potamogeton pusillus | GB, VC69 Westmorland, Esthwaite Water | Catherine Muriel Rob Douglas Montague Heath Gertrude Foggitt | Douglas Montague Heath | 8/9/1936 | BIRM |
| Hydrilla lithuanica | GB, VC69 Westmorland, Esthwaite Water | Catherine Muriel Rob Douglas Montague Heath Gertrude Foggitt | Douglas Montague Heath | 8/9/1936 | BIRM |
| Rumex pseudoalpinus | GB, VC64 Mid-west Yorkshire, Harrogate | Catherine Muriel Rob | Isaac A Helsby | 7/6/1934 | SLBI |
| Rumex aquaticus | GB, VC65 North-west Yorkshire, Mossdale | Catherine Muriel Rob | Isaac A Helsby | 14/7/1936 | SLBI |
| Malva parviflora | GB, VC65 North-west Yorkshire, Tanfield Mill | Catherine Muriel Rob | Isaac A Helsby | 9/1933 | SLBI |
| Malva verticillata | GB, VC64,VC65, Tanfield | Catherine Muriel Rob | Isaac A Helsby | 9/1933 | SLBI |
| Stellaria nemorum | GB, VC64,VC65, Tanfield | Catherine Muriel Rob | Catherine Muriel Rob Isaac A Helsby | 15/5/1934 | SLBI |
| Arbutus alpina | GB, VC108 West Sutherland, Inchnadamph | Catherine Muriel Rob | Isaac A Helsby | 7/1931 | SLBI |
| 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 |
| 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 |
| 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 |
| 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 |