. Australian botany, specially designed for the use of schools. Botany. io A USTRALIAJST BO TANY. leaves in all ordinary flowering plants (vasculares), are prosenchyma. Flowering plants are composed of cellular and vascular tissue combined. Between the woody fibres are found spaces filled with air, mostly small, but sometimes forming regular tubes or air passages (lacunae) comparable to chimneys, and are always observable by cutting across any part of a plant. Plants composed of cellular tissue alone increase very rapidly in size and number. Several species of the mush- room tribe have been kn
. Australian botany, specially designed for the use of schools. Botany. io A USTRALIAJST BO TANY. leaves in all ordinary flowering plants (vasculares), are prosenchyma. Flowering plants are composed of cellular and vascular tissue combined. Between the woody fibres are found spaces filled with air, mostly small, but sometimes forming regular tubes or air passages (lacunae) comparable to chimneys, and are always observable by cutting across any part of a plant. Plants composed of cellular tissue alone increase very rapidly in size and number. Several species of the mush- room tribe have been known to multiply to nearly a hundred millions of individuals in a minute. The yeast plant is one of these, a single cell of which is said to be t0V0 Part °f an incn across. The cells of some plants contain crystals of lime and •other salts called raphides, in which case starch, chloro- phyll, oils, sugar, and other granular structures are absent. Those cells actively assisting in the vital processes are surrounded in higher plants by fibres, winding spirally around definite groups, thus forming ducts for the sap to rise or descend in. Each cell is closed all round, and without any opening. Thus the contents can only get through the cell-wall by a mysterious process of oozing through, termed e?idos- Cellular tissue, showing—a, mose (ingoing) and exosmose (out- a, a, air passages or lacunae, going), produced by forces which,. 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 Guilfoyle, William Robert, 1843-1912. Melbourne, G. Robertson
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1884
