. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Fig. of Mikado tomato. In this instance there are no interposed leaflets,but the leaflets vary much in size and shapeIn other words, it is an example of an irregu-larly compound leaf. The leaf looks as if it 94 I^jESSOjyS WITS PLANTS. might represent foliage of anindefinite form; or, in otherwords, that there is no abso-lute and typical form of to-mato leaves. Let thepupil examine many-tomato plants, and seeif this is true. 103. The dahlia leafis peculiar (Fig. 91).In .this specimen t
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Fig. of Mikado tomato. In this instance there are no interposed leaflets,but the leaflets vary much in size and shapeIn other words, it is an example of an irregu-larly compound leaf. The leaf looks as if it 94 I^jESSOjyS WITS PLANTS. might represent foliage of anindefinite form; or, in otherwords, that there is no abso-lute and typical form of to-mato leaves. Let thepupil examine many-tomato plants, and seeif this is true. 103. The dahlia leafis peculiar (Fig. 91).In .this specimen thereare five well-definedleaflets, C, O, M, M,A; but one of these,A, has given rise toa strong segment ordivision, and twoothers have divisionswhich are sufficientlydistinct to be calledleaflets. There are va-rious grades of dividing orcompounding, and the leafmay be said to be is incompletely bi-com-pound. 104. From observations onleaves, we are soon impressed Fia. of dahlia. THW COMPOUND LEAF 95 with the multitude of forms. We are alsoimpressed with the fact that there may begreat variety,—or elasticity,—of forms in thesame kind of plant, showing that nature is reallyinformal. Definitions, however, are formal; andit, therefore, follows that definitions should becompared with the objects, not the objects withthe d
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
