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 A HISTORY OF SURREY Rhacomitrium canescens, Brid. Tortula Vahliana, Wils. Barbula lurida, Ldb. Zygodon viridissimus, var. rupestris, Ldb. ; Z. Stirtoni, Schp. Dry walls, fairly com- mon Orthotrichum anomalum, var. saxatile, Milde. Splachnum ampullaceum, L. Not uncommon on the moory ground by the Basingstoke Canal Aulacomnion palustre,. Schwgr. ; A. androgy- num, Schwgr. Bryum murale, Wils. ; B. roseum, Schreb. Rare ; sandy bank, St. George's Hill Cryphaea heteromalla, Mohr. ; Neckera pu- mila, Hedw. ; Leucodon sciuroides, Schwgr. c. fr. Porotrichum alopecurum, Mitt. Leptodon Smithii, Mohr. Trees and dry walls ; rare, although frequent in Kent and Sussex. Horsley Climacium dendroides, W. & M. Not a frequent inhabitant of the bogs of the county. Brtfktootd) plentiful Camptothecium lutescens, B. & S. ; Brachy- thecium glareosum, B. & S. ; B. albicans, B. & S. ; B. illecebrum, De Not. c. fr. Hypnum stellatum, Schreb. H. exannulatum, Gtimb. ; H. imponens, Hedw. Abun- dant on several moory commons scorpioides, L. ; H. stramineum, Dicks. ; H. cordifolium, Hedw. giganteum, Schp. Pools and marshes, rare : Brookwood 4. UPPER MOLE. This resembles District II. with however a far less extensive development of Lower Greensand which forms a much lower series of more isolated hills, well wooded and with a few bogs and alder swamps. Sphagnum papillosum, Ldb. ; S. molle, var. /3 Mulleri, Braith. Tetraphis pellucida, Hedw. c. fr. ; Ditrichum homomallum, Hpe. ; Seligeria paucifolia, Carr. Dicranella varia, Schp. ; Dicranum Bonjeani, var. calcareum, Br. Fissidens exilis, Hedw. Reigate. F. incurvus, Starke. Abundant on the downs decipiens, De Not. Frequent and often fruiting freely Phascum Flosrkeanum, W. & M. Chalky fields. Pottia bryoides, Mitt. ; P. lanceo- lata, C. M. P. caespitosa, C. M. Bare ground on the downs sparingly Tortula pusilla, Mitt. Barbula lurida, Ldb. ; B. fallax, var. /9 brevi- folia, Schultz ; B. cylindrica, Schp. ; B. vinealis, Brid. Leptodontium gemmascens, Braith. Betch- worth Weisia crispa, Mitt. ; W. multicapsularis, C. M. ; W. tenuis, C. M. RedhUl Trichostomum tortuosum, Dixon. Ephemerum recurvifolium, Ldb. Physcomitrella patens, B. & S. Buckland Bartramia ithyphylla, Brid. Near Dorking Leptobryum pyriforme, Wils. Bryum inclinatum, Bland. ; B. Donianum, Grev. ; Mnium affine, Bland. ; M. ros- tratum, Schrad. ; M. stellare, Reich. Cryphaea heteromalla, Mohr. Neckera crispa, var. falcata, Boul. Reigate Hill Thuidium hystricosum, Mitt. Abundant on the downs. T. recognitum, Ldb. Climacium dendroides, W. & M. ; Cylindro- thecium concinnum, Schp. Brachythecium illecebrum, De Not Eurhynchium crassinervium, B. & S. ; E. pu- milum, Schp. ; E. tenellum, var. scabrel- lum, Dixon. Trees about Dorking. E. murale, Milde. ; E. prselongum, var. /9 Stokesii, Turn. Hypnum stellatum, var. /3 protensum, B. & S. ; H. Sommerfeltii, Myr. c. fr. imponens, Hedw. Reigate Heath ; plenti- ful. H. stramineum, Dicks 5. LOWER MOLE. The southern half of the district is almost entirely composed of chalk and exhibits the most typical scenery of that formation. Norbury Park and Box Hill are richly wooded and yield a large number of species. Further north is a broad belt of London Clay with a small outcrop of Bagshot Sand towards Cobham. Sphagnum rigidum, Schp. ; S. tenellum, Archidium alternifolium, Schp. ; Ditrichum Ehrh. ; Tetraphis pellucida, Hedw. flexicaule, Hpe. ; Seligeria paucifolia, c. fr. Carr. Very common in the woods on Polytrichum nanum, Neck. ; P. aloides, the downs, growing on small stones. S. Hedw. calcarea, B. & S. 54