This list includes species that were present (but scarce, i.e. <10 tetrads) across the two vice-counties but are now more widespread, sometimes considerably more so. These species are also well worth keeping an eye open for. 'Garden escapes' are indicated by an asterisk.
- Allium triquetrum Three-cornered garlic *
- Anemone x hybrida Japanese Anemone *
- Arum italicum subsp. italicum Italian Lords-and-ladies *
- Briza maxima Greater Quaking-grass *
- Bromus secalinus Rye Brome
- Conyza sumatrensis Guernsey Fleabane
- Digitaria sanguinalis Hairy Finger-grass
- Erodium moschatum Musk Stork's-bill
- Polypogon monspeliensis Annual Beard-grass
- Polypogon viridis Water Bent
- Valerianella carinata Keeled-fruited Corn-Salad