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NORTHUMBERLAND AND DURHAM.
309
Eighteen stop short in Tyneland, viz. : —
| Myosurus minimus. | Convallaria multiflora. |
| Medicago maculata. | Taxus baccata. |
| Myriophyllum verticillatum. | Helleborus viridis. |
| Bryonia dioica. | Lactuca muralis. |
| Apera spica-venti. | Rubus leucostachys. |
| Hordeum sylvaticum. | Orchis ustulata. |
| Chenopodium glaucum. | Tamus communis. |
| murale. | Helleborus fœtidus. |
| Scrophularia aquatica. | Cuscuta trifolii. |
Thirty-one stop short in Durham, viz. : —
| Picris hieracioides. | Ligustrum vulgare. |
| Daphne mezereum. | Carduus eriophorus. |
| Inula helenium. | Onobrychis sativa. |
| Cornus sanguinea. | Hordeum maritimum. |
| Acer campestre. | Iris fœtidissima. |
| Lysimachia nummularia. | Butomus umbellatus. |
| Viola odorata. | Hydrocharis morsus-ranæ. |
| Hypericum montanum. | Bupleurum tenuissimum. |
| Mentha pulegium. | Ophrys apifera. |
| Rhamnus catharticus. | Ranunculus parviflorus. |
| Polypodium calcareum. | Papaver hybridum. |
| Ophrys muscifera. | Bupleurum rotundifolium. |
| Colchicum autumnale. | Caucalis daucoides. |
| Hottonia palustris. | Cypripedium calceolus. |
| Linum perenne. | Specularia hybrida. |
| Galeopsis ochroleuca. |
6. — Only one species is restricted in Britain to our two counties, the Teesdale Arenaria uliginosa, and that has a wide distribution on the Continent, reaching from Lapland to Lombardy and Austria. A second Teesdale species, only discovered, or rather determined, very recently, Viola arenaria, has still more recently been found over the Westmorland border; and sixteen of the northern species are not found further south on the east side of the island, viz. : —
| Juncus triglumis. | Linnæa borealis. |
| Epilobium anagallidifolium. | Hieracium lasiophyllum. |
| Woodsia ilvensis. | Convallaria verticillata. |
