. Botany for high schools. Botany. FLOWERS, THEIR STRUCTURE AND KINDS 143 and greenish. They fall away very easily and it is necessary to examine young flowers to see them. The calyx serves the pur- pose of protecting the other members of the flower in the bud. 229. The corolla.—Next inside of the calyx is the corolla. It consists of five distinct, free members or parts, of bright yellow color. Each one of these is a petal. The number of petals sometimes varies, six sometimes being present. Each petal is broadly obovate, w^dge-shaped in outline, with a minute claw at the base on the upper side
. Botany for high schools. Botany. FLOWERS, THEIR STRUCTURE AND KINDS 143 and greenish. They fall away very easily and it is necessary to examine young flowers to see them. The calyx serves the pur- pose of protecting the other members of the flower in the bud. 229. The corolla.—Next inside of the calyx is the corolla. It consists of five distinct, free members or parts, of bright yellow color. Each one of these is a petal. The number of petals sometimes varies, six sometimes being present. Each petal is broadly obovate, w^dge-shaped in outline, with a minute claw at the base on the upper side. The function of the corolla, when bright in color, is supposed to be that of attracting insects which aid in pollination. It also serves to protect the inner members of the flower in the bud. 230. The stamens.—Just inside of the corolla are a large number of small flower members known as stamens. Each stamen consists of two parts, the stalk or filament, and a broad terminal portion, the anther. The anther is slightly lobed into tw^o parts. Each lobe is called an anther sac, or locide. It is a little case, containing, when ripe, the pollen grains, very small, free cells, w^hich are produced in great numbers. In the butter- cup these lobes open by splitting along the middle line on one side, and permit the scattering of the pollen which to the eye resembles a fine grained powder. The filament of the stamen is attached along the inner face of the anther, and the latter in such a case is said to be adnate. 231. The pistils.—The pistils are the members which occupy the center or summit of the flovrer. They are numerous and distinct from each other. The pistil is recognized as consist- ing of three parts, the ovary, the style Jinrl ^h(^ ^tiaum Thc^ r\\TC\v\T k tVip ^^^^^ sepals, petals and stamens ana tne siigma. ine ovary is tne h^ve fallen. Section of pistil at right, lower and larger part. It is ovate in showing position of ovule. outline and compressed. The ovary is hollo
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
