. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. 444 CAETOPHYLLACE^. Order 24.—Caeyophyilace^, the Chiekweed Family. {Polypet. Hypog.) Sepals 4-5 (fig. 678), free (fig. 293, p. 136), or united in a tube (figs. 297 c, p. 197; 653 c, p. 371), persistent. Petals 4-5 (fig. 678), hypogynous, unguiculate (fig. 305, p. 201), often bifid or bipar- tite (fig. 307, p. 201), occasionally 0. Stamens (fig, 679 e) usually double the number of the petals, or, if equal, usually alternate with them; filaments subulate, sometimes unit
. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. 444 CAETOPHYLLACE^. Order 24.—Caeyophyilace^, the Chiekweed Family. {Polypet. Hypog.) Sepals 4-5 (fig. 678), free (fig. 293, p. 136), or united in a tube (figs. 297 c, p. 197; 653 c, p. 371), persistent. Petals 4-5 (fig. 678), hypogynous, unguiculate (fig. 305, p. 201), often bifid or bipar- tite (fig. 307, p. 201), occasionally 0. Stamens (fig, 679 e) usually double the number of the petals, or, if equal, usually alternate with them; filaments subulate, sometimes united; anthers innate, bilocular, dehiscence longitudinal. Ovary single, often stalked or supported on a gynophore (fig. 653 5', p. 371), composed of 2 to 5 carpels, which are usually united by their edges, but sometimes the edges are turned in- Fig. Fig. 681, Fig. 679. wards, so as to form partial dissepiments; stigmas 2-5 (figs. 425, 426 s, p. 242), with papillse on their inner surface (fig. 679 s). Capsule unilocular (figs. 425, p. 242 ; 681, 2), or imperfectly bi-quinquelocular Pig. 678-682. Illustrations of the natural order CaryophyllaceEe. Fig. 678. Diagram of the flower of Alsine media, common Chickweed, belonging to the natural order Caryo- phyllaceae, trihe Alsinese. The flower consists of five imbricate sepals, five alternate petals, five stamens, a unilocular ovary, with a free central placenta, and numerous ovules. Fig. 679. Section of the flower of Dianthus CaryophyUus, Carnation, c. Calyx; p, petals, cohering with the stamens at the base; e, stamens ; g, gynophore or thecaphore, the staUc supporting the ovary; o, ovary with central placenta and ovules; s, two stigmas, which are papillose all along their inner surface. Fig. 680. Horizontal section of the ovary in a very young state, showing the partitions c c, which divide the ovary into two cavities. These divisions ultimately disappear, lea^'ing the placenta, j), bearing the ovules free in the centre.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
