A HISTORY OF BERKSHIRE Vicia lathyroides, L. Fragaria vesca, L., var. bercheriensis, Druce Potentilla procumbens x sylvestris procurabens x reptans reptans x sylvestris Rosa sarmentacea, Woods, var. Deseglisei (Bar.) Epilobium lanceolatum, Sel>. and Maur. Crepis fcetida, L. (f extinct) [ setosa, Hall, f.] Hieracium vulgatum, Fr. [Anchusa officinalis, L.~] Scrophularia nodosa, L., var. bracteata, Druce Mentha piperita, Hurls. Scutellaria galericulata, L., var. leiosepala, Druce Galeopsis speciosa, Miller Chenopodium opulifolium, Schrad. ficifolium, Sfflf. murale, L. Polygonum dumetorum, L. x Salix ambigua, Ehrh. Orchis maculata,i., var. ericetorum [E.F. Linton] Tulipa sylvestris, L. Narcissus Pseudo-narcissus, L. x Juncus diffusus, Hoppe bulbosus, L., var. Kochii, Druce x Carex axillaris, Good. Molinia varia, Schrank, var. breviramosa (Pan.) var. major (Roth), Druce Elymus europaeus, L. THE BRAMBLES (Rubt) As will have been gathered from the preceding pages, Berkshire is found to be very rich in the forms of brambles, as these species delight in heathy country with peaty and gravelly soils, such as are so well represented in the Pang, Kennet and Loddon districts. The Oxford and Kimeridge clays and chalk formation yield but few species, and over the greater portion where these formations come to the surface we shall find only R. ulmifolius, R. corylifolius and R. c&sius with their forms and hybrids, unless in some woodland spot where R. leucostachys and forms of R. Radula and R. rhamnifolius may be found. But on the greensand a rich variety may be observed, the Boar's Hill range being especially representative, and my friends Dr. Focke and the Rev. W. Moyle Rogers, to whom we owe so much for the identification of these critical plants, were both delighted with the forms they found. It was on this spot I pointed out that beautiful species which I called a pink-flowered nitidus to Dr. Focke, and he has since named it R. holerytbros ; and the heaths and woods on the Bagshot sands are also very prolific. Among our rarer plants are R. Colemanni, R. /enttginosus, R. su/catus, R. saxicolus, R. holerythros, R. mercicus var. bracteatus, R. imbricatus and R. rudis. Even now there is much work to be done at them, and several additional species will assuredly be added to our list. THE ROSES are not so well represented, as we have no authenticated record in a native situation of the burnet rose (R. pimpinellifolia}, hence Rosa invo- luta, R. Sablni and R. hibernica, which are hybrids of this with other species, are also absent. Rosa vittosa, L. (R. mo//is, Sm.) is also, I believe, absent, although an allied species, R. mo/h'ssima, Willd., which is an older name for JR. tomentosa, Sm., is widely distributed, and in one of its varieties, var. pseudo-mollis (E. G. Baker), bears much resemblance to it. We have also var. Sherardi (Davies) -subglobosa (Sm.),var.jy/i;w/r/j(Lindl.) and var. scabriuscula (Winch.). The subcristate forms so common in the north of Britain are very scarce, but we have R. glauca, as at Tubney, and its variety var. crassifolia (Wallr.), which is the R. corii- folia, Fries, and R. c&sia, Sm. ; the var. subcristata (Baker) also occurs. 62
