INTEODUCTIOX Ixxi 



beds of watercress growing in springs, throwui out apparently 

 by some bed of clay below the Bagshot Sands, of which Bucklebury 

 Common would seem to be composed. The valley of the Pang here 

 begins to show occasional tufts of Carex paniculafa, and Oenantlie crocata 

 also occurs. The Pang then proceeds to Bradfield, the site of the well- 

 known and important school called Bradfield College, w^here a small 

 stream called the Kimber rises and flows into the Pang. The meadows 

 between Bradfield and Tidmarsh have some bushy thickets on the peaty 

 soil, which j'ield Geum rivale and G. intennedium in the most northernly 

 locality yet known for them in Berkshire. Here, too, is Carex panicu- 

 lata, C. disticha, Oenanthe crocata, Cardamine amara, Pohjgonatum midfijlorum, 

 and by the stream some plants of Aconitum Xapellus have become 

 naturalized. Ribes nigrum is not unfreguent. In, one of tbe meadows, 

 on a gravelly bank, Trifolium scahrum is found, but not abundantly ; it 

 is a very rare plant of the county ; and is associated with Myosotis coUina, 

 M. versicolor, and Hieracium Pilosella. From Tidmarsh, where on the 

 border of one of the cornfields Valerianella carinata has been found, the 

 Pang flow^s through low-lying meadows and plantations to Pangbourn, 

 where it is about 150 feet above the sea. The plantations also contain 

 a considerable quantity of Pohjgonatum, while the shady banks of the 

 stream are covered with a profuse growth of Cardamine amara, and 

 present a beautiful appearance when the plant is in full bloom. Near 

 Pangbourn Lamium purpureum often has its leaves more deeply cut 

 than is usual in the north of the county, and the hedge-banks yield 

 Carum segetum, Geranium rotundifolium, Cynoglossum officinale, and Diantlms 

 Armeria, the last being very local. The once interesting marsh of 

 Pangbourn has been converted into rather dull j^asture ground, but 

 Genista anglica still occurs there. To the south of the marsh rises the 

 bold wooded slopes of Sulham and Purley, which are very beautiful 

 in themselves and contain many local plants. Hypericum calycinum is 

 quite naturalized there, and H. Androsaemum and H. montanum also 

 occur. Pyrus Torminalis, P. Aria, Elymus europaeus, Atropa, NeoUia, &c., 

 are also found, but the especial feature of the locality to the botanist 

 is the border of turfy down, which is especially rich in Chalk plants. 

 These include Origaymm, Iberis, Asperula cynanchica, Thesium, Polygala 

 vulgaris and cakarea, Gentiana Amarella, and till recently G. campestris, 

 Bromus erectus, Avena pubescens, A. pratensis, Cuscuta Epithymum, &c. The 

 neighbourhood also yields Galium sylvestre in its only Beikshire station 

 yet known. Arenaria tenuifolia, Cerastium semidecandrum, Viscum, 

 Euphorbia Cypa.rissias, Convallaria, Mentha Pulegium, Antirrhinum Orontium, 

 Vinca minor, V. major, Papaver somniferum, P. hybridum, Fumaria densi/lora, 

 Saponaria, Mijosurus, Blackstonia, Erigeron acre, Linaria repeals, Campanxda 

 Trachelium, C. glomerata, Ribes rubrum, R. nigrum, Lonicera Cajmfolium, 

 Malva moschata, var. Ramondiana, &c., also occur. 



