. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 461 secondary receptacle, bearing compartments like the normal fruit, is introduced. This never reaches very large dimensions and may readily be seen at one end of the orange. The original stock from which the navel oranges grown in our country have been derived, was obtained from Brazil. The Buckthorn order, Rhamnales, is very closely allied to the. Fig. 321. Flowers of the Geraniales and Rhamnales: A, inflorescence of Geranium. B, nearly mature fruit consisting of five united carpels. C, discharge of the seed. The carpels snap
. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 461 secondary receptacle, bearing compartments like the normal fruit, is introduced. This never reaches very large dimensions and may readily be seen at one end of the orange. The original stock from which the navel oranges grown in our country have been derived, was obtained from Brazil. The Buckthorn order, Rhamnales, is very closely allied to the. Fig. 321. Flowers of the Geraniales and Rhamnales: A, inflorescence of Geranium. B, nearly mature fruit consisting of five united carpels. C, discharge of the seed. The carpels snap apart, owing to the tension set up by the drying out of the tissues. D, section of pistil, showing the ovules with micropyle directed upwards. E, flower of the grape {Vitis), a common form of the Rhamnales—ca, calyx, reduced to a rim; c, corolla, which opens at base and falls off as a cap; re, nectar glands within stamens. Compare Sapin- dales. F, corolla free from the receptacle. G, flower freed from corolla ovary in section, showing micropyle pointing down as in Sapindales. Sapindales and includes such familiar plants as the buckthorn {Rhamnus), Jersey tea (Ceanothus), used in revolutionary times as a substitute for tea, the grape (Vitis), Japanese ivies, Virginia creeper {Parthenocissus), etc. The minute green or white flower shows a further reduction in parts, the petals not only being fre- quently suppressed, but the stamens are reduced to one whorl. 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 Curtis, Carlton Clarence, 1864-1945. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectbotany
