| Glyceria fluitans x notata = G. x pedicellata | GB, VC22 Berkshire, Cookham | Effie Moira Rosser | Manchester Museum | 30/6/1951 | MANCH |
| Glyceria fluitans x notata = G. x pedicellata | GB, VC22 Berkshire, Cookham | Effie Moira Rosser | | 30/6/1951 | MANCH |
| Glyceria fluitans x notata = G. x pedicellata | GB, VC22 Berkshire, Cookham | Effie Moira Rosser | | 30/6/1951 | MANCH |
+ | Stellaria palustris | GB, VC22 Berkshire, Cookham | Effie Moira Rosser | | 30/6/1951 | MANCH |
+ | Stellaria palustris | GB, VC22 Berkshire, Cookham | Effie Moira Rosser | | 30/6/1951 | MANCH |
+ | Festuca longifolia | GB, VC22 Berkshire, Winter Hill | Effie Moira Rosser | Effie Moira Rosser | 30/6/1951 | MANCH |
+ | Astragalus danicus | GB, VC29 Cambridgeshire, Newmarket | Effie Moira Rosser | Manchester Museum | 1/6/1951 | MANCH |
+ | Hydrocharis morsus-ranae | GB, VC29 Cambridgeshire, Wicken Fen | Effie Moira Rosser | | 2/6/1951 | MANCH |
| Carex leporina | GB, VC41 Glamorganshire, Fernhill | Effie Moira Rosser | | 19/8/1972 | E |
| Alisma plantago-aquatica | GB, VC41 Glamorganshire, Mountain Ash | Effie Moira Rosser | | 19/8/1972 | E |
+ | Senecio cambrensis | GB, VC51 Flintshire, Ffrith | Arthur John Farmer Effie Moira Rosser | | 17/7/1954 | MANCH |
+ | Senecio cambrensis | GB, VC51 Flintshire, Ffrith | Effie Moira Rosser L W Frost | | 2/10/1954 | MANCH |
+ | Senecio cambrensis | GB, VC51 Flintshire, Ffrith | Effie Moira Rosser L W Frost | | 2/10/1954 | MANCH |
+ | Senecio cambrensis | GB, VC51 Flintshire, Ffrith | Effie Moira Rosser L W Frost | | 2/10/1954 | MANCH |
+ | Spiranthes spiralis | GB, VC52 Anglesey, Holy Is | Effie Moira Rosser | Effie Moira Rosser | 3/9/1952 | MANCH |
| Achillea ptarmica | GB, VC52 Anglesey, Holy Island | Effie Moira Rosser | | 30/6/1953 | MANCH |
| Achillea ptarmica | GB, VC52 Anglesey, Holy Island | Effie Moira Rosser | | 30/6/1953 | MANCH |
+ | Chrysanthemum segetum | GB, VC52 Anglesey, Holy Island | Effie Moira Rosser | | 30/6/1953 | MANCH |
+ | Chrysanthemum segetum | GB, VC52 Anglesey, Holy Island | Effie Moira Rosser | Effie Moira Rosser | 30/6/1953 | MANCH |
| Jasione montana | GB, VC52 Anglesey, Holy Island | Effie Moira Rosser | | 30/6/1953 | MANCH |
| Alisma plantago-aquatica | GB, VC52 Anglesey, Llyn Coron | Effie Moira Rosser | | 2/7/1953 | MANCH |
| Alisma plantago-aquatica | GB, VC52 Anglesey, Llyn Coron | Effie Moira Rosser | | 2/7/1953 | MANCH |
+ | Chrysanthemum segetum | GB, VC52 Anglesey, Porth Dafarch | Effie Moira Rosser | Effie Moira Rosser | 30/6/1953 | MANCH |
+ | Chrysanthemum segetum | GB, VC52 Anglesey, Porth Dafarch | Effie Moira Rosser | Effie Moira Rosser | 30/6/1953 | MANCH |
| Jasione montana | GB, VC52 Anglesey, South Stack | Effie Moira Rosser | | 30/6/1953 | MANCH |
| Senecio jacobaea x aquaticus = S. x ostenfeldii | GB, VC57 Derbyshire, Chinley | Effie Moira Rosser | | 7/8/1952 | MANCH |
| Senecio jacobaea x aquaticus = S. x ostenfeldii | GB, VC57 Derbyshire, Chinley | Effie Moira Rosser | | 7/8/1952 | MANCH |
+ | Senecio jacobaea x aquaticus = S. x ostenfeldii | GB, VC57 Derbyshire, Chinley (near),Hall End | Effie Moira Rosser | Effie Moira Rosser | 20/9/1953 | MANCH |
| Senecio jacobaea x aquaticus = S. x ostenfeldii | GB, VC57 Derbyshire, Hull End, Chinley | Effie Moira Rosser | | 6/8/1952 | MANCH |
| Senecio jacobaea x aquaticus = S. x ostenfeldii | GB, VC57 Derbyshire, Hull End, Chinley | Effie Moira Rosser | | 6/8/1952 | MANCH |
+ | Saxifraga hypnoides | GB, VC57 Derbyshire, Miller's Dale | Effie Moira Rosser | | 6/7/1952 | MANCH |
+ | Saxifraga hypnoides | GB, VC57 Derbyshire, Miller's Dale | Effie Moira Rosser | | 6/7/1952 | MANCH |
+ | Silene nutans | GB, VC57 Derbyshire, Miller's dale [Millersdale] | Effie Moira Rosser | | 29/6/1952 | MANCH |
+ | Silene nutans | GB, VC57 Derbyshire, Miller's dale [Millersdale] | Effie Moira Rosser | | 29/6/1952 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC58 Cheshire, Lindow Common | Effie Moira Rosser | | 6/7/1954 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC58 Cheshire, Lindow Common | Effie Moira Rosser | | 6/7/1954 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC58 Cheshire, Lindow Common | Effie Moira Rosser | | 6/7/1954 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC58 Cheshire, Lindow Common | Effie Moira Rosser | | 6/7/1954 | MANCH |
| Symphytum officinale x asperum = S. x uplandicum | GB, VC58 Cheshire, Lindow Common | Effie Moira Rosser | | 6/7/1954 | MANCH |
| Adoxa moschatellina | GB, VC58 Cheshire, Styal | B Bewick Effie Moira Rosser | | 22/4/1953 | MANCH |