I'.MI V(tr}(itit>ii III till Mall lliij), lluiniilus liipiiliis A. 



The ju'dii'ds and the outer surface of the periautli lobes of those 

 plants with red bines are tinjjed with red, the laterals of those plants 

 thus appearing of a reddish-green before the flowers open. An interest- 

 ing feature in connection with the Oregon J hops is that the laterals 

 are more "open," i.e. the flowers not so crowded together as in the 

 English form. On the re-appearance of this character in 1918 it was 

 more closely studied and the dilTerence was seen to be in the greater 

 rigidity of the flowering branches of the Oregon plants, so that they 

 stand out from the a.xis (primary, secondary, etc., as the case may be) 

 bearing them more nearly at right angles tlian in the English forms, 

 where the branches are more or less droo])ing unless supported (see 

 Fig. 3). In the former again the pedicel is usually strongly curved 

 at right angles immediately beneath the flower, and there is a tendency 

 for the secondary laterals to bear the tertiary branches unilaterally. 

 Whether the condition that obtains in the Oregons is the more advan- 

 tageous for the dissemination of the pollen is not certain, but it would 

 seem to permit of a more uniform distribution of the pollen than would 

 be the case where the flowers are crowded together in a pendant tassel. 



With regard to the stipular laterals there is little to be remarked. 

 In some cases they are long and ta])ering (a maximiini of \'l inches 

 has been observed), in otiiers siiort and rounded, wliile sometimes 

 they are all suppressed with the exception of a few towards the top of 

 the plant. 



The Stipules. 



These are interpetiolar; every leaf is provided with two, each of 

 which is partially fused with the one on the same side belonging to the 

 other leaf at that node, thus at each node there appear to be two bifid 

 stipules alternating with the two leaves. The stipules may be uj)right 

 exposing the lower surface, spreading, or recurved exposing the upper 

 surface. In the English forms the stipules are upright to spreading, 

 usually almost at right angles to the axis of the bine, while in the 

 Oregon hops, although a few may be spreading the tendency is for 

 the stipules to be so recurved that the outer surface of the tips becomes 

 adpressed to the stem below the node. 



The Flower. 

 Perianth. The five lobes of the perianth vary in size from J x -fLr 

 to -jV X o'lT inch practically on every jilant, but the former dimensions 

 are the more frequently met with in the English forms, the latter in 

 the Oregon males. 



