E. S. Salmon and H. Wormald 



249 



of the third plant, OG 4, have not been taken but it has been noted that 

 the number of glands on its leaves are above the average and in 1920 

 as many as 40 were counted to the \ inch circle. There seems to be no 

 doubt therefore that OG 4 should be included with Z 17 and Z 42 among 

 those plants with " many " leaf glands. 



Many 



Glands few, mode- Reference 

 rate or many in number 



number of seedling 



OB 17 



OD27 

 Z22 

 Z17 

 Z42 



Male 

 or 1916 1917 



Female (actual countings) (actual countings) 



^ 43; 47; 50; 43 57; 45; 43; 56 



58; 46; 27; 37 51; 49; 49; 55 



J. _ 59; 57; 49; 43 



37; 42 ; 37 ; 44 

 Q 25 ; 26 ; 29 ; 30 43 ; 42 ; 35 ; 41 



22; 26; 36; 35 

 ^ — 36; 30; 36; 29 



28; 39; 24; 27 

 ^ _ 55; 59; 64; 62 



44; 39; 22; 47 



1918 1919 1920 



about 40 20—45 35—60 



about 40 2-2-31 27—39 



about 25 30—50 about 35 



about 30 about 30 about 30 



about 40 about 30 about 30 



Few 



Z43 

 0A6 



Z58 

 Z49 



Z27 



OA28 



2; 3; 2; 7 



4; 6; 2; 9 



7; 6; 9; 10 



10; 12; 9; 14 



6; 8; 12; 9 



2; 7; 4; 5 



7; 4; 8; 12 



9; 13; 4; 2 



about 4 



As in the case of the terms used to denote the " time of flowering " 

 the terms " many," " moderate " and " few " used in the above sense are 

 applicable only to the seedlings of the wild hop ; the cultivated varieties 

 of hop and their seedlings are generally far more glandular than these 

 wild hop seedlings, plants with leaves having glands averaging over 60 

 in number to the \ inch circle being not infrequent in the former. 



(4) The Shape of the Leaves. 



The leaves of the mature plant are usually 3- or 5-lobed : those 

 towards the apex of the stem being trilobed or entire. Occasionally 

 however plants are met with which have a tendency to produce leaves 

 with 7 or 9 lobes by the sub-division of the terminal lobe into three 

 lobes, together with the division, in the 9-lobed leaves, of each basal 

 lobe into two. The most striking case is that of a $ plant (Ref No. 275) 



