. Plants; a text-book of botany. Botany. Fig. 113. A ripe dandelion head, showing the mass of plumes, a few seed-like fruits with their plumes still attached to the receptacle, and two fallen off.—After Keener. possible a very great range in 77. Dispersal of spores by common methods of transport- ing spores and seeds. In most cases spores are sufficiently small and light to be trans- ported by the gentlest move- ments of air. Among the fungi this is a very common method of spore dispersal (see Fig. 100), and it is extensively used in scattering the spores of moss-plants, fern-plants (see
. Plants; a text-book of botany. Botany. Fig. 113. A ripe dandelion head, showing the mass of plumes, a few seed-like fruits with their plumes still attached to the receptacle, and two fallen off.—After Keener. possible a very great range in 77. Dispersal of spores by common methods of transport- ing spores and seeds. In most cases spores are sufficiently small and light to be trans- ported by the gentlest move- ments of air. Among the fungi this is a very common method of spore dispersal (see Fig. 100), and it is extensively used in scattering the spores of moss-plants, fern-plants (see Fig. 45), and seed-plants. Among seed-plants this is one method of pollination, the that at least fourteen per cent, of the seeds of any country can re- tain their vital- ity in sea-water for twenty- eight days. At the ordinary rate of move- ment of ocean currents, this length of time would permit such seeds to be transported over a thou- sand miles, thus making distribution. This is one of the most. Fig. 114. Seed-like fruits of Senecio with plumes for dispersal by air.— After 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and company
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