BOTANY 



northern species. Of the remaining plants, Scirpus Savii (S, nanus) and 

 Rubia are rarely found inland ; Impatient Noli-tangere is not native so far 

 south ; and Arenaria verna itself is a plant of mountainous situations, al- 

 though a variety called Gerardi occurs on the rocks of Kynance Cove in 

 Cornwall ; Cicuta is very local and chiefly found in East Anglia, and 

 Sparganium minimum is very local in southern Britain. The remaining 

 absentees, of which one or two may yet be added to our list, are 

 Cardamine impatiens (found in Surrey), Vicia Orobus (found in Hants), 

 Campanula patula (also in Hants, and as a casual in Berks), Andromeda 

 recorded on very old authority for Bucks), Pinguicula lusitanica (a western 

 species falling short of Berks), Symphytum tuberosum (recorded for Surrey 

 and Beds), Euphorbia platyphylla, Salix acuminata (now regarded as hybrid), 

 Gastridium, Lastrea eemula, and Hymenophyllum tunbridgense (the latter, 

 although found at Tunbridge Wells, is not likely to occur, as we have no 

 damp rocks such as those on which it finds a home). 



We now come to the more local British species, and in order to 

 save space we shall now enumerate, not the absentees, but the plants 

 which occur in Berkshire, and are found in from 15 to 20 counties or 

 vice-counties of Britain. 



Of the 75 species found in from 15 to 20 counties Berkshire 

 possesses Anemone Pulsatilla, Fumaria Boreei, F. confusa, F. parvifolia, F. 

 pallidiflora, F. muralis, Polygala vu/garis, Viola tricolor, Geranium rotundi- 

 folium, Medicago denticulata (casual), Epilobium tetragonum, Galium elongatum, 

 G. erectum, G. syhestre, (Enantbe silaifolia, Cineraria (Senecio) campestris, 

 Filago apiculata, F. spatbulata, Linaria repent, Stachys ambigua (now con- 

 sidered to be a hybrid), Chenopodium Jicifolium, Stratiotes Aloides, Fritillaria, 

 Orchis incarnata, Apera Spica-"uenti and Lycopodium inundatum. Of these 

 the census numbers for 'Polygala vu/garis, Orchis incarnata, Viola tricolor 

 and some others are much too low. 



Of the 99 species found in from 10 to 14 countries we have 

 Helleborus feetidus, Iberis amara, Draba brachycarpa (Eropbila prcecox), 

 Polygala calcarea, Ulex nanus (U. minor), Erodium moschatum, Barkhausia 

 (Crepis] faetida (?), B. (C.) taraxacifolia (now rapidly spreading over Eng- 

 land), Crepis biennis (a colonist), 'Taraxacum erytbrospermum (now con- 

 sidered to be only a variety of the common dandelion), Hieracium rigidum 

 (not the type), Asperugo procumbens (as casual), Villarsia nympbpbczoides 

 (Limnantbemum peltatum), Teucrium Scordium, Potamogeton zosterifolius (P. 

 compressum), Carex Bcenningbausiana (now considered to be a hybrid of 

 C. remota and paniculata), C. elongata, Actinocarpus (Damasonium Alisma) 

 (not recently found), and Agrostis setacea. 



Of the 307 very local plants found in 9 or fewer counties, we 

 possess Ranunculus intermedius (with some doubt), Adonis (as a casual), 

 Viola lactea, Fumaria Vaillantii, Diantbus prolifer (Tunica prolif era], Elatine 

 Hydropiper, Tblaspi perfoliatum (casual), Pyrus scandica, Rosa agrestis 

 (sepium), Epilobium lanceolatum, Caucalis latifolia (as a casual), Ly thrum 

 Hyssopjfolia, Tordylium (probably extinct), Gentiana germanica, Verbascum 

 Lycbnitis, Illecebrum verticillatum, Ballota ruderalis (now considered to be a 



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