Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . les, or calabashes. 872. Ord. Acanthaceffi {Acanthus Family). Herbs or shrubbyplants, Avith bracteate showy flowers, and opposite simple leaves,without stipules. Corolla bilabiate, or sometimes almost regularly 448 ILLUSTRATIONS OF THE NATURAL ORDERS. five-lobed, convolute in aestivation! Stamens four and didynamous,oi only two, the anterior pair being abortive or obsolete. Ovarytwo-celled, with the placentae in the axi
Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . les, or calabashes. 872. Ord. Acanthaceffi {Acanthus Family). Herbs or shrubbyplants, Avith bracteate showy flowers, and opposite simple leaves,without stipules. Corolla bilabiate, or sometimes almost regularly 448 ILLUSTRATIONS OF THE NATURAL ORDERS. five-lobed, convolute in aestivation! Stamens four and didynamous,oi only two, the anterior pair being abortive or obsolete. Ovarytwo-celled, with the placentae in the axis, often few-ovuled. Seeds(sometimes only one or two in each cell) usually supported byhooked processes of the placenta, destitute of albumen. The classi-cal Acanthus is the type of this large and chiefly tropical order: itsgracefully lobed and sinuated leaves furnished the ornament of theCorinthian capital. They are emollient plants, or some of thembitter or slightly acrid : of little economical use. Several are culti-vated for ornament. 873. Old. Scroplmlariaceffi (Figivort Family). Herbs, or some-times shrubby plants, with opposite, verticillate, or alternate 977 971 974 978 973 976 Corolla bilabiate, or more or less irregular; the lobes imbricated inaestivation. Stamens four and didynamous (Fig. 407), the fifth orupper stamen sometimes appearing in the form of a sterile filament FIG. 971. Branch of Gerardia purpurea. 972. Corolla, of the natural size, laid open. and style of the same. 974. Magnified transverse section of the capsule, with one of theralves removed. FIG. 975. Gratiola aurea, natural size. 976. Corolla laid open, showing the two perfectstamens and two rudimentary filaments as well as the pistil. 977. The perfect stamens andsterile filament of Chelone. 978. Flower of a Linaria (Toadflax). EXOGENOUS OR DICOTYLEDONOUS PLANTS. 449 (Fig. 408), or very rarely antheriferous, or often only two, onepair being either suppressed or reduced to sterile f
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1860, booksubjectbotany
