Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Parallel-veined leaf of false Solomon Seal. Modification of Blade. — The blade of a leaf may undergo many modifications in different species of plants. It may have almost any shape, from a thin line to an almost circular outline. It may have an almost smooth margin, as in the leaf of the rubber plant (Ficus elastica), or the margin may be more or less deeply indented, as in the tulip, sassafras, and the oak. Compound Leaf. — If the
Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Parallel-veined leaf of false Solomon Seal. Modification of Blade. — The blade of a leaf may undergo many modifications in different species of plants. It may have almost any shape, from a thin line to an almost circular outline. It may have an almost smooth margin, as in the leaf of the rubber plant (Ficus elastica), or the margin may be more or less deeply indented, as in the tulip, sassafras, and the oak. Compound Leaf. — If the margin is so deeply indented that the blade is cut down to the midrib, then each part of the blade is said to be a leaflet, and the whole leaf is compound. In most cases it is easy to distinguish a compound leaf: (1) by » See Hunter and Valentine, Manual, pages 39-^2. 2 /j^^.^ page 45= Pinnately-compound leaf of rose, showing stipules {St.).
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