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The Atlantic Prize is an illustration of the scanty foliaged sorts, and the Royal Red or Buckeye State of those in which it is more abundant. As to color, the foliage varies from the dark blue-green of the Buckeye State to the light, distinctly yellowish-green of the Honor Bright. =Varietal differences as to fruit.= These are often more important than those of vine.
The first is only half-way a variety, and therefore would deserve the name of a half-race; the second is not yet a full constant variety, but always fluctuates to and fro between the varietal and the specific mark, ever-sporting in both directions. It holds a middle position between a half-race and a variety, and therefore might be called a "middle-race."
For the recurrence of the same deviation always impresses us as a varietal mark. In such cases of parallel variations the single instances obviously follow the same rules and are therefore to be designated as analogous. Pitchers or ascidia, formed by the union of the margins of a leaf, are perhaps the best proof.
This question is hardly susceptible of an experimental answer, as it would require such an enormous amount of seed from a few mother plants as can scarcely ever be produced. The whole character of the fluctuations shows them to be of an opposite nature, contrasting manifestly with specific and varietal characters.
But however admissible this conception may seem, there is of course no real objection to the assumption of independent and parallel mutations. For the purpose of a comparison with the Helwingia type we are however, not at all concerned with the species to which the trifurcatum variety belongs, but only with the varietal mark itself.
This conception of the inner nature of double flowers explains the fact that the varietal mark is seldom seen to be complete throughout larger groups of individuals, providing these have not been already selected by this character.
These are only some of the varietal differences of the tomato. Are such differences of practical importance? I think they are, and that a wise selection of the type best suited to one's own particular conditions and requirements is one of the most essential requisites of satisfactory tomato culture. How important it seems to practical tomato growers may be illustrated by an actual case.
Varietal differences in a physiologic sense they do not possess, and for this reason afford a pure instance of unbalanced union, though differing in more than one point. I have made reciprocal crosses, taking at one time the small-flowered and at the other the common species as pistillate parent.
In nearly all other instances of blue or red varieties every botanist will be able to point out some allied red or blue species, as an indication of the probable source of the varietal character. Dark spots on the lower parts of the petals of some plants afford another instance, as in poppies and in the allied Glaucium, where they sometimes occur as varietal and in other cases as specific marks.
This however, will show itself only in those individuals which reassume the character of the varietal parent, all the others apparently remaining true to the type of the species. Now it is easy to foresee what must happen in the second generation if the first generation after the cross is supposed to be kept free from new vicinistic influences, or from crosses with neighboring varieties.
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