A HISTORY OF SURREY tendencies, viz. the navelwort (Cotyledon Umbilicus) occurs in various localities, and is particularly abundant round the village of Churt. Other interesting plants are rare species of fumitory (Fumaria pallldlflora^ Rev. E. S. Marshall), bitter cress (Cardamine impatiens), water wort (Elatine Hydropiper, L.) found in Frensham Pond and Cut-mill Pond, Senecio campestris found on the Hog's Back, Hieracium surrejanum (Rev. E. S. Marshall), the cranberry (Vaccinium Oxycoccos) now extinct, the bog orchis (Malaxis paludosa) recently rediscovered (T. Howse), and a sedge (Carex depauperata'). The original specimens of a new species of branched bur- reed (Sparganium neglectum) were gathered at Albury Ponds in the eastern sub-district. The following are some of the more remarkable plants of the district : Papaver hybridum, D. Wahlenbergia hederacea, Reich. Fumaria pallidiflora, Bor. Vaccinium Oxycoccos, L. Cardamine impatiens, L. Pyrola minor, L. "Isatis tinctoria, L. Verbascum Lychnitis, L. Stellaria umbrosa, Opiz. Euphrasia curta, Fries Lepidium Smithii, Hook. Orobanche Picridis, F. Schultz Elatine Hydropiper, L. Teucrium Botrys, L. Hypericum quadrangulum, Fries Lithospermum officinale, L. Geranium lucidum, L. Utricularia minor, L. Erodium maritimum, L. Samolus Valerandi, L. 'Impatiens fulva, Nutt. Sparganium neglectum, Beeby Trifolium glomeratum, L. Orchis ustulata, L. Rosa sepium, Thuill Epipactis media, Fries obtusifolia, Desv. Malaxis paludosa, Sw. Potentilla Comarum, Nestl. *Ornithogalum umbellatum, L. Epilobium lanceolatum, Seb. et M. Cyperus fuscus, L. Cotyledon Umbilicus, L. Rhynchospora fusca, R. et S. Chrysosplenium alternifolium, L. Carex arenaria, L. Galium tricorne, With. strigosa, Huds. Valerianella carinata, Lois depauperata, Good. Auricula, DC. canescens, L. Senecio campestris, DC. Leersia oryzoides, Sol. Hieracium surrejanum, Hanbury Gastndium lendigerum, Gaud. Campanula patula, L. Glyceria declinata, Breb. 4. LOWER WHY This district comprises the basin of the river Wey north of the ridge of the chalk hills which forms its southern limit. It is bounded on the north by the river Thames ; on the east by a line leaving the chalk above Gomshall and passing between East and West Horsley, and east of Ockham and Weybridge to a point on the Thames a little east of Walton Bridge ; and on the west and north-west by districts i and 2. After leaving the chalk a belt of the London Clay is met with, and following this a considerable area of the Bagshot Sands with heaths and boglands, similar to those of district 2, but from which some of the more noteworthy species found in the latter district are absent. The most remarkable plants of the district are the two following : a pondweed (Potamo- geton pralongus) found in the pool above Walton Bridge and in the slow ditch which runs from it, and a bur-reed (Sparganium affine) which occurs in a large pond on Pirbright Common. Both of these have usually a more boreal range in this country. The pondweed never flowers in Surrey, and I am informed that it does not fruit in our eastern counties, though it does so freely in the north of England and in Scotland. This as well as another pondweed (P. zosteri- folius) which occurs also in district 2, occurs only close to the southern margin of the river Thames, having doubtless been brought down from some of that river's northern tributaries and left in times of flood. A species of treacle mustard (Erysimum cheirantboides) although not uncommon, may be mentioned for the great profusion in which it occurs in the sandy region around Woking. A water-parsnip (Apium inundatuni) has been known from Pirbright since 1666 (Merrett), and still grows there in abundance. On Clandon Downs grows the frog orchis (Habenaria viridis, T. Howse), one of the rarest orchids in the county, while another, the marsh helleborine, occurs in abundance in boggy ground by the canal near Woking (Rev. W. R. Linton). The slender cotton-grass (Eriophorum gracile) which formerly grew by Whitemoor Pond has long been extinct there and is confined to the more recently noted locality in district i. 42
