244 Variation in Wild Hop 



(1 ) Time of flowering, 



(2) Colour of the "bine." 



(3) Relative number of glands on the leaves. 



(4) Shape of the leaves. 



(5) Colour of the leaves. 



(6) Length of the primary branches (laterals). 



(7) Characters associated with the reproductive organs, i.e. (a) in 

 the cT plant, the number of glands on the perianth-lobes, on 

 the anthers and on the receptacle ; (6) in the % plant, the 

 characters of the strobile (hop-" cone"), viz. size, shape, aroma, 

 "condition," and colour of the main axis ("strig"). 



(8) Degree of susceptibility to the mildew Sphaerotheca Humuli, 

 under greenhouse conditions and also in the open. 



(1) Time of Flowering. 



The great majority of the plants were much later in coming into 

 flower than the cultivated varieties. It was found however that they 

 showed considerable variation amongst themselves with respect to their 

 time of flowering and particularly was this noticeable in the case of the 

 cf plants; the earliest of these, as a rule, came into flower four weeks or 

 more before the latest and this difference is maintained from year to year. 

 By the " time of flowering " is here meant the first day on which flowers 

 actually opened to show the stamens, in the case of the (^ plants, and the 

 date of the first appearance of a well developed "brush" (condition of 

 the young " cone " when the stigmas emerge from between the bracte- 

 oles) in the $ plants. 



The fluctuation from year to year shown by certain male plants 

 during from three to five consecutive seasons is shown in the Table 

 below : 



Time of Flowering of certain Male Plants. 



