. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. RELATIONS OF FOLIAGE-LEAVES TO ABSORBENT ROOTS. 97 of the stem are only erect for about three-quarters of their length; the upper- most third, including the apex, is bent obliquely outwards and downwards. Drops of rain falling on this upper third of a leaf would flow in a centrifugal direction, and do, as a matter of fact, drip down from the apex. Now the leaves in all. rig. 14.—Irrigation of Rain-water. 1 In Alfredia cern-ua. 2 In a Mullein (Verbascumphlomoides). these plants are shorter the higher
. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. RELATIONS OF FOLIAGE-LEAVES TO ABSORBENT ROOTS. 97 of the stem are only erect for about three-quarters of their length; the upper- most third, including the apex, is bent obliquely outwards and downwards. Drops of rain falling on this upper third of a leaf would flow in a centrifugal direction, and do, as a matter of fact, drip down from the apex. Now the leaves in all. rig. 14.—Irrigation of Rain-water. 1 In Alfredia cern-ua. 2 In a Mullein (Verbascumphlomoides). these plants are shorter the higher their position upon the stem, so that the total contour of the plant may be described as a slender pyramid. In consequence of this, water dropping from the outward-bent and drooping apices of superior leaves is arrested by that part of an inferior leaf which shelves towards the stem, and is thereby conducted centripetally. Thus all the rain-water received by a plant of this kind at last reaches the immediate neighbourhood of the tap-root, and is Vol. I. 7. 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 Kerner von Marilaun, Anton, 1831-1898; Oliver, F. W. (Francis Wall), 1864-1951; Busk, Marian (Balfour) Lady, 1861-1941; Macdonald, Mary Frances (Ewart); Kerner von Marilaun, Anton, 1831-1898. Pflanzenleben. English. New York, H. Holt and Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
