STUDIES ON ULMUS : I 



143 



significant difference rises with the absolute number of teeth. Since, however, com- 

 parisons are only made between closely similar samples, scale transformation is probably 

 unnecessary. 



Preliminary tests showed that comparisons between 10 leaves from each sample 

 gave little increase in discrimination above comparisons between five leaves per sample, 

 provided that the initial sampling procedure was rigorously followed. The data presented 

 are therefore based on 5 -leaf samples. 



Table 2. 



Taxonomic analysis of the elm samples collected from major square 52. 



Group 



Subgroup 



Samples 



Range 



Taxonomic relations 



I 



a 



b 

 c 

 d 

 e 

 f 

 g 

 h 



01b, 17a, 23^,58,60,63,73, 



80, 85a, 93a 



61a, 76, 96 



87, 97, 98 



54, 64, 74 



44, 72 



40,45 



93b 



55 



13311, 46976*t 

 13422, 44645*t 



34515, 45726t 

 44853, 45973t 

 36431, 46432*t 

 34641, 45651 t 

 25323. 36325t 

 54443* 

 45545t 



f U. diversifolia 



\ U. ?aff. carpinifolia sens. str. 



U. ?aff. diversifolia 



U. ?aff. coritana var. media 



U. glabra-carpinifolia 

 J U. ?aff. diversifolia 

 \ U. ?a£f. carpinifolia sens. str. 



II 



a 

 b 



Ola, 08, 11, 14, 20, 23b, 24-a, 

 24b, 28b, 33, 56, 57 



86b, 95 



51432, 85767*t 

 51432, 84757*t 

 64565, 65665* 



r U. procera 

 < U. ?aff. coritana 

 [ U. 7procera-carpinifolia 

 U. coritana var. media 



III 





16, 18,25,35,42,48,82 



05424. 27757*t 



U. carpinifolia sens. str. 



IV 





26, 46 



33566, 44668t 



U. ?aff. carpinifolia sens. str. 



V 



a 

 b 

 c 



70, 92 

 52, 90 

 91 



42600. 73935t 

 52631, 53834t 

 42704, 63915t 

 72620t 



U. coritana var. rotundifolia 



VI 





07, 85b 



57121 59232* 



I J Ol nnY/1 



VII 



a 

 b 



15 

 61b 



48341, 49556t 



49551t 



48346t 



U. glabra-carpinifolia 

 C U. glabra-carpinifolia 

 \ U. ?aff. carpinifolia sens. str. 



VIII 

 IX 



a 

 b 



50 

 62 



81 



10514, 13617t 



10514t 



13617t 



35922t 



U. ?aff. coritana var. angusti- 

 folia 



X 





32 



43929t 





XI 





06 



41334t 



U. plotii-carpinifolia 



