| Hypochaeris glabra | GB, VC95 Moray, Forres | Mary McCallum Webster | | 17/8/1958 | K |
| Hypochaeris glabra | GB, VC96 East Inverness-shire, Cran Loch | Mary McCallum Webster | | 12/6/1960 | K |
| Hypochaeris radicata x glabra = H. x intermedia | GB, VC79 Selkirkshire, Galashiels | Mary McCallum Webster | | 23/6/1967 | K |
| Lamium maculatum | GB, VC95 Moray, Dalvey | Mary McCallum Webster | | 31/5/1956 | K |
| Lamium maculatum | GB, VC95 Moray, Dalvey | Mary McCallum Webster | | 1/8/1960 | K |
| Lamium maculatum | GB, VC95 Moray, Forres | | Mary McCallum Webster | 31/5/1956 | K |
| Lamium purpureum var. purpureum | GB, VC18 South Essex, Malden | Mary McCallum Webster | | 7/4/1962 | K |
| Lamium purpureum var. hybridum | IE, VCH12 Co. Wexford, Bunclody | Mary McCallum Webster | | 4/9/1962 | K |
| Linaria vulgaris | GB, VC107 East Sutherland, The Mownd | Mary McCallum Webster | | 19/7/1961 | K |
| Marrubium vulgare | GB, VC80 Roxburghshire, Galashiels | Mary McCallum Webster | | 25/7/1960 | K |
| Mentha aquatica | IE, VCH12 Co. Wexford, Bunclody | Mary McCallum Webster | | 4/9/1962 | K |
| Mentha aquatica | IE, VCH13 Co. Carlow, Tullow | Mary McCallum Webster | | 6/9/1957 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC104 North Ebudes, Broadford | Mary McCallum Webster | | 16/9/1978 | K |
| Mentha aquatica x spicata = M. x piperita | IE, VCH12 Co. Wexford, Rathnure | Mary McCallum Webster | | 4/9/1957 | K |
| Mentha aquatica x spicata = M. x piperita | IE, VCH13 Co. Carlow, Borris | Mary McCallum Webster | | 6/9/1957 | K |
| Mentha arvensis | GB, VC62 North-east Yorkshire | Mary McCallum Webster | | 19/8/1957 | K |
| Mentha arvensis | GB, VC96 East Inverness-shire, Loch Cran | Mary McCallum Webster | | 14/8/1960 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC94 Banffshire, Dufftown | | Mary McCallum Webster | 26/8/1952 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC95 Moray, Elgin | Mary McCallum Webster | | 13/8/1960 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC96 East Inverness-shire, Loch Loy | | Mary McCallum Webster | 26/8/1952 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC96 East Inverness-shire, Moy Burn | | Mary McCallum Webster | 26/8/1962 | K |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH12 Co. Wexford, Bunclody | Mary McCallum Webster | | 5/9/1962 | K |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH12 Co. Wexford, Rathnure | Mary McCallum Webster | | 4/9/1957 | K |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH13 Co. Carlow, Bunclody | Mary McCallum Webster | | 4/9/1962 | K |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH13 Co. Carlow, Leighlinbridge | Mary McCallum Webster | | 7/9/1957 | K |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH13 Co. Carlow, Milford | Mary McCallum Webster | | 5/9/1957 | K |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH13 Co. Carlow, Milltown | Mary McCallum Webster | | 5/9/1957 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC65 North-west Yorkshire, Gayle | Mary McCallum Webster | | 2/10/1957 | K |
| Mentha piperita var. piperita | IE, VCH12 Co. Wexford, Lady's Island | Mary McCallum Webster | | 8/9/1957 | K |
| Mentha spicata | GB, VC5 South Somerset, Yeovil | Mary McCallum Webster | | 2/10/1963 | K |
| Mentha spicata | GB, VC95 Moray, Bridge of Lossie | Mary McCallum Webster | | 13/8/1960 | K |
| Mentha spicata | GB, VC95 Moray, Forres | Mary McCallum Webster | | 1/9/1963 | K |
| Mentha spicata | GB, VC95 Moray, Lossiemouth | Mary McCallum Webster | | 14/8/1970 | K |
| Mentha spicata | GB, VC95 Moray, Moy | Mary McCallum Webster | | 5/8/1957 | K |
| Mentha spicata | GB, VC95 Moray, Rafford | Mary McCallum Webster | | 13/9/1976 | K |
| Mentha spicata | GB, VC96 East Inverness-shire, Moy Burn | | Mary McCallum Webster | 26/8/1962 | K |
| Mentha spicata | GB, VC113 Channel Islands, Jersey | Mary McCallum Webster | | 26/8/1957 | K |
| Mentha spicata | GB, VC113 Channel Islands, Jersey, Saint Peters | Mary McCallum Webster | | 26/8/1957 | K |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC5 South Somerset, Yeovil | Mary McCallum Webster | | 2/10/1963 | K |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC95 Moray, Lossiemouth | Mary McCallum Webster | | 14/8/1970 | K |