BOTANY chalk, especially in the neighbourhood of Brighton, have been already referred to. To the west of Brighton the Adur flows into the sea at Shoreham. Some low cliffs in the vicinity, composed of sand, gravel, and comminuted shells, afford many interesting species, while the ballast along Shoreham Harbour is the abode of several varieties. Among the rarer plants we have : — Crucifer^ Sisymbrium Sophia L. Matthiola incana R. Br. Caryophyllace^ Silene *noctiflora L. S. *italica Pers. TlLIACE^ Tilia gi-andiflora Ekrh. Geraniace-* Geranium lucidum L. Erodium maritimum 5ot. LeGUMINIFERjE TrifoHum stdlatum L. T. glomeratum L. Vicia lutea L. V. *bithynica L. Lathyrus aphaca L. Anthyllis Vulneraria v. Dillenii Schultz. Rosacea Rubus affinis W. i3 N. R. incurvatus Bab. R. thyrsoidens Wimm. R. Grabowskii Weihe R. villicaulis W. y N. R. Hystrix Bab. R. echinatus Lind. R. fusco-ater Weihe R. diversifolius Lindl. R. Guntheri Weihe R. althaeifolius Host. Rosa Sabini Woods R. Doniana „ Onagrace-s Epilobium lanceolatum &chn. Isnardia *palustris L. Haloragiace^ Callitriche obtusangula Le Gal. UmBELLIFERjE Caucalis daucoides L. RUBIACE^ Galium sylvestre Poll. Composite Crepis fcetida L. ScROPHULARIACEiE Melampyrum arvense L. Limosella aquatica L. PoLYGONACE/E Rumex palustris Sot. Amentifer^ Salix pentranda L. S. purpurea v. Helix L. S. rubra Huds. S. triandra v. amygdalina L. S. Smithiana Wild. S. cinerea v. oleifolia Sm. S. ambigua Ehrh. Chenopodiace« Atriplex rosea L. PoLYGONACEiE Rumex palustris Sot. CyperacejE Carex elongata L. Charace^ Chara vulgaris v. longibracteata Kuetz. Tolypella glomerata Leonh. T. prolifera Leonh. IV. The Ouse The limits of this district may be thus defined : We take first the Cuckmere boundary to Cross-in-Hand, and thence follow the East Rother boundary to Castle Hill, near Rotherfield. We then turn westward across the ridge of the Weald to Sand Hill, Stone Cross, Crowboro' Gate, Duddleswell Gate, Sweet Mine Pits, Nutley Hill, Charlwood, Charlwood Gate, Wych Cross, Cold Harbour, Tyne's Cross, West Hoathly, Turner's Hill, Half Smock, across Bal- combe Down and Highbeech Warren to Hand Cross, thence on to Plummer's Plain, turning south-east, past Eastland's Farm, Slut House Farm, Warninglid, Slough Green and Whiteman's Green to Cuckfield, Butler's Green, over the tunnel at Hayward's Heath, taking the road to Wivelsfield by way of Westwood to Ditchling and Westmeston, striking the Downs east of Ditchling Beacon to Falmer, Newmarket Hill and Rottingdean. This district is drained by the Ouse, which has a larger catchment basin than any other in the county, and by its tributaries, the Uckfield, the Black-brook and the Ritch. Mr. J. H. A. Jenner of Lewes, who has given more attention to this district than any other observer, m his 'Notei on the Flora of the South Downs, states that the chalk hills of that neighbourhood are remarkably free from wood, with some few exceptions on the northern slope, and thus differ much from the downs of West Sussex and Kent. There are also cultivated tracts which 55
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