SUMMARY 627 



The Scottish-British types are Sagina siihuMa, Vicia sylvatica^ Parnassia, 

 Aniennaria dioica(?), Pingiiicida vulgaris, Galeopsis speciosa, Carex dioica, 

 Phegopteris poly2)odioides, and Pyrdla minor. 



The British-Highland types are Vaccinium Myriillus, Lycopodium Selago, 

 and Chrysosplenium. 



The British-Scottish types are Potenfilla palustris, Pyrus Aucuparia^ 

 Geum rivale, Epilobium angustifolium, Gentiana campestris, Myosotis repens, 

 Hahenaria viridis, Eleocharis uniglumis, Sciipiis caespifosus, and Bo- 

 trijchium. 



The plants which have been erroneously recorded for Berkshire are 

 somewhat numerous. The following, almost without exception, belong 

 to this category : — Thalidnim majus, Cardamine impatiens, Draha injlata, 

 Lepidium latifolium, Polycarpon tetraphylhim, Viola Ciirtisii, Linum angusti- 

 folium, Geranium sylvaticum, Vicia Ordhus, Rosa villosa, Drosera anglica, 

 Chrysosplenium aliernifoHiim, Sedum Forsteri, Peiicedanum officinale, Cicuta 

 virosa, Rulia peregrina, Cnicus heterophyllus, Crepis paludosa, Melampyrum 

 arvense, M. sylvaticum, M. cristatum, Orobanche purpurea (coendea), Veronica 

 hybrida, Scrophularia Ehrharii, Salvia pratensis, so far as Mr. Lousley's record 

 is concerned, Eupliorbia pilahjplnjllos, Allium Scorodoprasum, Habenaria 

 albida, Cephalanthera ensifolia, Potamogeton gramineum {heterophyllus), Carex 

 arenaria, and C. Oederi. 



Among the species recorded there are some which are doubtfully 

 correct, either from the plant not being found actually in Berkshire, 

 or because it may not have been properly identified. None of the 

 following species belonging to this class have been met with by me in 

 Berkshire as native plants : — Dianthus deltoides, Lathy nis pcdustris, Rosa 

 pimpinellifoUa, Pijrus rotundifolia, var. decipiens (sccmdica), Tillaea, Anten- 

 naria dioica, Arctium tomentosum, Filago gallica, Ajuga Chamaepitys, Stachys 

 germanica, and Calamagrostis lanceolata. 



The following plants, which have been recorded, were in all proba- 

 bility not native, and some of the records are of considerable antiquity ; 

 the author has been unable to verify their occurrence in the county : — 

 Anemone apennina (alien), Isatis (casual), Silene conica (casual), S. quinque- 

 vulnera (casual), Pyrus germanica (alien), Cerefolium sativum (casual\ 

 Doronicum plantagineum (alien), Polemo7iium (alien), Chenopodium Botrys 

 (casual), and Aristolochia Clematitis (alien). 



Many plants credited to the county have either become much rarer 

 in the progress of time, or their distribution must be very restricted 

 and en-atic, as I have been unable to discover them ; these include 

 Lythrum Hyssopifolia, Crepis foetida, Inula Helenium, Damasonium Alisma, 

 Dryopteris Thehjpteris, Lycopodium clavatum, and L. Selago. 



The plants actually extinct appear to be Teucrium Scordium, Tordyliuni 

 maximum, — which, if it occurred in Berkshire, was possibly not a native 

 species, — Inula Helenium, and Orchis Simia. The list, fortunately, is not 



S S 2 



