Stop upwards at 300 yards.—Cardamine amara, Sisymbrium officinale, Viola hirta, Hypericum perforatum, Rubus fruticosus, Geranium dissectum, Trifolium procumbens, T. minus, Arctium lappa, Mentha arvensis, Typha latifolia, Sparganium ramosum.
Stop upwards at 400 yards.—Cerastium glomeratum, Ulex europaeus, Spartium scoparium, Prunus spinosa, Lotus major, Geum urbanum, Galium cruciatum, Fraxinus excelsior, Pyrus malus, Ulmus montana, Viburnum opulus, Quercus robur.
Stop upwards at 500 yards.—Capsella bursa-pastoris, Lonicera periclymenum, Hypericum pulchrum, Prunus padus, Rosa canina, Juniperus communis, Populus tremula, Betula alba, Corylus avellana, Angelica sylvestris, Senecio aquaticus, Taxus baccata, Erica cinerea.
Stop upwards at 600 yards.—Ranunculus flammula, Polygala vulgaris, Stellaria graminea, Oxalis acetosella, Epilobium montanum, Crataegus oxyacantha, Parnassia palustris, Heracleum spondylium, Carduus lanceolatus, Salix caprea, Lastrea filix-mas.
The following is a list of the Northumberland and Durham species, about half the total number, which are northern or montane for Britain as a whole, arranged according to the order in which they are to be met with as we ascend from the low country up amongst the hills.
Below 100 yards.—Thalictrum minus, T. flexuosum, Trollius europaeus, Thlaspi alpestre, Viola lutea, Arenaria verna, Stellaria nemorum, Geranium sylvaticum, Prunus padus, Sanguisorba officinalis, Ribes nigrnm, R. rubrum, R. grossularia, R. alpinum, Sedum villosum, Parnassia palustris, Ligusticum scoticum, Myrrhis odorata, Galium boreale, Crepis paludosa, Carduus heterophyllus, Campanula latifolia, Pyrola minor, Lamium intermedium, Galeopsis versicolor, Mertensia maritima, Pinguicula vulgaris, Primula farinosa, Salix pentandra, S. nigricans, S. laurina, S. phylicifolia, Listera cordata, Cypripedium calceolus, Allium scorodoprasum, Gagea lutea, Blysmus rufus, Scirpus uniglumis, Carex filiformis,
