The crossing of species which differ in many characters ofters 
unusual possibilities in the production of new varieties. First 
generation plants are more or less similar, and may be propagated 
indefinitely. It is interesting to note, however, that Fulvala, Doro- 
thea K. Williamson, and our own first sence on hybrid plants, 
differ in some important points from each other, although they 
are all hybrids between the same two species—/ris fulva and I. 
foliosa. The differences in these first generation plants may b 
due to the fact that different strains or local races of one or both 
parental varieties may have been used in making the original 
=) 
fa) 
crosses. 
Our results with growing the second generation plants from 
self-pollinated seed of Dorothea K. Williamson are conspicuous 
evidence of exceptional opportunities in the production of new 
types of iris. The various characters of the original parental spe- 
cies are recombined in all sorts of new ways, various colored flow- 
ers on different types of plants being obtained. We have described 
and illustrated only a few of the possible kinds. Many further 
combinations may be found when additional seedlings are grown 
to maturity. In such a cross, involving marked differences be- 
1e original species, a large series of new forms may thus 
— 
tween t 
be secured. 
There are still further possibilities in crossing the first genera- 
tion plant with either of its parents. Such crosses are known to 
the plant breeder as “back crosses ”’ and, in this particular case, 
we might expect to obtain exceptional results by hybridizing the 
first generation plant, as Dorothea K. Williamson, with the /ris 
fulva parent. 
Tris fulva undoubtedly offers many opportunities for the produc- 
tion of new kinds of iris. If it is hybridized with tall and more 
vigorous types than J. foliosa, very desirable varieties might be 
secured, in which the height and vigor of one parent would be 
combined with flowers of exceptional coloring, size, poise, and 
substance. The possibilities of such results are indicated by 
Cacique and Sagamore, obtained by Dr. S. S. Berry, in which, 
apparently, J. fulva has been hybridized with /. savannarunt. 
Many additional seedlings of our own crosses are also being 
grown, and the future possibilities are practically unlimited. 
