. Foundations of Botany. Botany. each other or distinct, or they may cohere by their fila- ments into a single group, when they are said to be monadelphous, of one brotherhood (Fig. 151), into two groups (diadelphous) (Fig. 152), or into many groups. In some flowers the stamens are held together in a ring by their coherent anthers (Fig. 153). 216. Union of Pistils. — The pistils may be entirely separate from each other, distinct and simple, as they are Fig. 144. —Bell-Shaped . * J corona of Beii-Fiower ui the buttercup and the stonecrop, or {Campanula). several may join to form one compound pi
. Foundations of Botany. Botany. each other or distinct, or they may cohere by their fila- ments into a single group, when they are said to be monadelphous, of one brotherhood (Fig. 151), into two groups (diadelphous) (Fig. 152), or into many groups. In some flowers the stamens are held together in a ring by their coherent anthers (Fig. 153). 216. Union of Pistils. — The pistils may be entirely separate from each other, distinct and simple, as they are Fig. 144. —Bell-Shaped . * J corona of Beii-Fiower ui the buttercup and the stonecrop, or {Campanula). several may join to form one compound pistil of more or less united carpels. In the latter case the union generally affects the ovaries, but often leaves the styles separate, or it may result in joining ovaries and styles, but leave the stigmas separate or at any rate lobed, so as to show of how many separate carpels the compound pistil is made up. Even when there is no external sign to show the compound nature of the pistil, it can usu- ally be recognized J^ '^w^-^y-^ from the study of \*{ y j[' a cross-section of the Fig. 146. Corolla of Jasmine. OVary. Wheel-Shaped Corolla (Magnified.) g^ Cellg Qf the of Potato. Ovary; Placentas. — Compound ovaries are very com- monly several-celled, that is, they consist of a number of. Fig. 145. — Salver-Shaped. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn & company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
