INFERTILE HYBRIDS. 191 
quite similar in form to those of the parent, being mostly 5-lobed. 
Compared with the parent, the flowers are slightly smaller ; the perianth 
is virtually identical, the petals being broad, white, and of fair sub- 
stance ; the bracts are smaller; the outer coronal rays are fewer, stouter, 
less regular, and milky-white in colour, forming in large part a single 
series composed in some places of the upper and in others of the under set ; 
the inner rays and the rays leaning towards and encireling the gonophore 
are similar, in section the structure of the flower is. almost identical. 
The pollen, even poorer than in the parent, is deep yellow and greatly 
misshapen. 
In III. the leaves are of quite distinctive shape. They differ from 
those of the rest of the series and from the parent and grandparent forms 
in having a convex instead of a cordate base. They are almost always 
3-lobed, 5-lobed leaves being quite exceptional ; 4-lobed ones are of fairly 
common occurrence. 
The flowers (fig. 87) resemble those of I. closely. The petals are 
narrower and more delicate. The sepals are also-narrower. The outer 
Fig. 37.—FLowER oF SEEDLING III. or Passtrnora ‘Constance Eutror’ x P, ABA. 
NatuRaL Size. 
coronal rays are more slender, and are almost as regularly disposed in 
two whorls as in the parent, and they are pure white. The inner 
rayS are similar to those of the parent. The rays encircling the 
gonophore are out of sight, being only one-third the length of the 
corresponding series in the parent. In section the structure of the flower 
is seen to be the same, the only difference being the shortening of the 
innermost series of rays above referred to. The pollen is. poor as in I. 
