. The natural history of plants. Botany. Fia. 280. Longitudinal section of flower (f). Pia. 281. Diagram. Fig. 283. Fia. 284. Longitudinal sec- Stone, tion of fruit (f ). After flowering the receptacle grows and forms a complete indusium around the fruit, which is often long crowned by the remains of the perianth and androceum (figs. 282, 283). The walls of this indusium behave as in a true drupe. Its deep layers become hard and woody, forming a sort of stone (fig. 284'). Outside of this the tissues grow succulent as in a sarcocarp, and are covered exter- nally by the membranous epidermis cloa
. The natural history of plants. Botany. Fia. 280. Longitudinal section of flower (f). Pia. 281. Diagram. Fig. 283. Fia. 284. Longitudinal sec- Stone, tion of fruit (f ). After flowering the receptacle grows and forms a complete indusium around the fruit, which is often long crowned by the remains of the perianth and androceum (figs. 282, 283). The walls of this indusium behave as in a true drupe. Its deep layers become hard and woody, forming a sort of stone (fig. 284'). Outside of this the tissues grow succulent as in a sarcocarp, and are covered exter- nally by the membranous epidermis cloaked in peltate hairs. The true fruit, lodged in this thick pouch, is an achene with a membra- ' In IE. angmtifoUa the pollen-grains are tri- angular, mucli flattened, with little papilla on the angles. (H. Mohl, in Ann. So. Wat., s&. 2, iii. 314.) 2 The ovule has two coats. When adult its raphe is neither turned towards or away from the placenta, but is well on one side (fig. 281). 2 It is formed of vertically elongated fibres incrusted with woody matter. The internal epidermis of the receptacle bears long cylindrical hairs, which persist even after the fruit is ripe. The stone is traversed aU the way down by more or less regular grooves, separated by rough projecting 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 Baillon, Henri Ernest, 1827-1895; Hartog, Marcus Manuel, 1851-. London, L. Reeve & Co.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
