28 INTRODUCTION. 



the geographical position of England.* Of these the district 

 claims all except Ulex nanus, which, however, is reported as 

 growing a few miles beyond the border. 



3. The Scottish Type ; and 4. The Highland Type embrace 

 species generally unknown in lower latitudes. It is notice- 

 able, however, that the district possesses two species of Ferns 

 which are natives of higher elevations Asplenium viride and 

 Cystopteris fragilis. There is, of course, some difficulty in 

 deciding how far they owe their presence here to human 

 agency, but both have been recorded by various observers for 

 nearly half a century, and in 1884 Cystopteris appeared and 

 was immediately eradicated in spite of the efforts of the Club 

 to preserve it in a new locality in which its intentional intro- 

 duction was out of the question. 



5. The Germanic Type embraces eleven species of plants 

 having a tendency to a distribution connected with the pro- 

 vinces of England bounded by the German Ocean and North 

 Sea.f It is natural that, owing to our eastern position, a 

 record of all these species should be expected ; but, owing also 

 to the absence of the chalk which covers a large part of the 

 east of England, and the distance which now separates the 

 district from the sea, only four species are forthcoming : 

 fieseda lutea, Silene nocti/tora, Lactuca scariola, and Aceras 

 anthropophora. 



6. The Atlantic Type includes species having a tendency 

 to a distribution on the western side of the island. It is not 

 to be expected that such species should be met with here, 

 though Ceterach officinarum, which is generally known as a 

 western plant, finds a place in the district list. 



Hence it will be seen that the Flora of Haiieston belongs 

 to the lowest zone of the Agrarian Region ; that it confirms 

 the British, English, and Germanic character its geographical 

 position assigns to it, and at the same time anticipates by 

 certain marked forms the approach of higher latitudes. 



(ii.) The Flora of Norfolk and 'Suffolk Compared. Allu- 

 sion has already been made to the new species which the Club 

 has been enabled to add to the Flora of these counties ; it, 

 therefore, only remains to point out general affinities and 

 divergencies between their botany and that of the district. 



An inspection of our list reveals a marked absence of heath 



* English Type. Examples : Rhamnus catharticus, Ulex nanus, Tamus 

 communis, Bryonia dioica, Hottonia palustris, Chlora perfoliata, Sison amo- 

 mum, Linaria elatine, Ranunculus parviflorus, Lamium galeobdolon, Hor- 

 deum pratense, Alopecurus af/restis, Cettrach officinarum. 



f Germanic Type. Examples : Frankenia Iceris, Anemone pulsatilla, 

 Reseda lutea, Silene noctijiora, Silene conica, Pimpinella major, Pulicaria vul- 

 garis, Lactuca scariola, Atriplex pedunculata, Aceras anthropophora, Spartina 

 stricta. 



