38 VEGETATION OF BLAKENEY POINT. 



of that which obtains in the zone of greatest abundance, viz., 

 the flanks. Also where the relict Statices near the base of a 

 lateral have become buried by the advancing shingle of the 

 main bank there is even slightly greater luxuriance exhibited. 



In the appended table the heights, in inches, of twenty plants, 

 taken at random from the crest and flanks, are given, from 

 which it is seen that the average of the former shews an excess 

 of about 4 1 inches over that of the latter. 



Statice binervosa : Heights of Plants : 



Crest 9*5 9 11 6 7 10 1CT5 9 7 10 Average 

 6 9'5 9*5 7 9 10'5 6'5 8 9'5 6'5 8'5 ins. 

 Sides 3'5 3 4'5 4'25 5'5 3'25 3 4'5 3 4'5 



3 3'5 6 3*5 4 6 34 375 5 4'18 

 An examination of Plantago Coronopus from the three 

 regions shewed the same general relations both as to the size of 

 the plants and the relative lengths of their individual leaves. The 

 leaves of the plants from the " Binervosa " zone were small, 

 fleshy, sub-cylindrical, and nearly glabrous, with often little or 

 no sign of teeth. On the crest the plants bore leaves which 

 were much flatter, with well-developed teeth, and very hairy. 

 Where covered by shingle, the leaves were again fleshy and 

 glabrous, or nearly so, but the dentation was well developed 

 (though not as in crest plants), and the leaves were flat though 

 thick. 



P. Coronopus : Length of Leaves. 



Binervosa Zone Average 



1 7 '8 '8 1'2 '8 '9 1 1'2 '9 '93 ins. 

 Crest 



2*5 3 2' 5 1'5 2 1*5 1 1'5 1'5 1 1'8 

 Shingle 



3 3'5 2*5 2'5 3'5 2 1'5 1'5 175 2 2'3 

 In the above table typical plants were selected from each 

 habitat and ten leaves of each measured. 



The only reasonable explanation of these data appears to be 

 that under the rigorous conditions of the sloping flanks, the 

 Statice abounds through the absence of its less hardy com- 

 petitors, but with the accretion of soil the limiting factor for 



