. Nature study and agriculture. Nature study; Agriculture. CHAPTER VII A FEW IMPORTANT PLANT FAMILIES The Grass Family. — This is perhaps our most important family of plants as it furnishes us the cereal grains and much other food for man and beast. The plants have stems that are solid at the joints and usually hollow be- tween ; in Indian corn and a few other species the stem is not hollow, but pithy. The leaves are alternate and parallel veined; the basal part envelops the stem, forming a sheath that is open on the side opposite the blade. A good example for studying the structure of the flo
. Nature study and agriculture. Nature study; Agriculture. CHAPTER VII A FEW IMPORTANT PLANT FAMILIES The Grass Family. — This is perhaps our most important family of plants as it furnishes us the cereal grains and much other food for man and beast. The plants have stems that are solid at the joints and usually hollow be- tween ; in Indian corn and a few other species the stem is not hollow, but pithy. The leaves are alternate and parallel veined; the basal part envelops the stem, forming a sheath that is open on the side opposite the blade. A good example for studying the structure of the flower is the head of wheat. This "head" is what botanists call a spike, and consists of two rows of spikelets attached alternately on opposite sides of a jointed stem. Each of these spikelets contains several flowers, but they are quite in- conspicuous, as the showy calyx and corolla are absent and we have only the stamens and pistil, and these are inclosed within scales or chaff. There are three stamens, and when the wheat is in full bloom we may see the anthers dangUng by their slender filaments. The pistil consists of the ovary or kernel and two styles and feathery stigmas. In barley and rye the flower clusters have the form of a 72. Section of Corn Stalk a. Solid joints. b. Part of blade of leaf. c. Enveloping Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Schmidt, Charles Christian, 1859-. Boston, New York [etc. ] D. C. Heath & Co
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