. Cyclopedia of American horticulture : comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening; Horticulture; Horticulture; Horticulture. 1902 VARIEGATION cliromatophores, and the various changes that these undergo, as the leaf becomes older, produce the re- markable and beautiful colorations of this group of plants. The eol- caladiums, is intensified by strong light and nourishing food. The more of the


. Cyclopedia of American horticulture : comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening; Horticulture; Horticulture; Horticulture. 1902 VARIEGATION cliromatophores, and the various changes that these undergo, as the leaf becomes older, produce the re- markable and beautiful colorations of this group of plants. The eol- caladiums, is intensified by strong light and nourishing food. The more of the modified chlorophyll there is produced and t" rapid the changes in the mod chlorophyll :il.(Kit tlin the action <;'f lijiii jumI iln- a and oxidiziiii; I'.riiiiniv .ii the , will be the Ih again highfeedingis likt the plant to revert to Variegated plants or parts of plants are usually of slower growth and smaller than green plants of the same variety or the green parts of the same plant. Causes of I,,,,. ,,„^,.„.-Varie- gation occurs imiImi' i,\ varia- In the former, a vaii. lmIi .1 ln-aueh is likely to appear on an otherwise perfectly normal plant. Such varie- gations are easily reproduced by budding, grafting or cuttings, but generally do not develop again from seeds produced on such branches. On the other hand, when variegation develops in seed- lings, the seeds of such plants usu- ally give a number of variegated individuals, even the cotyledons being sometimes affected. In some cases the proportion of gated plants from seeds is verj large and can be increased b\ selec tion. As a rule, the form of spot ting or marking i's seedlings, often being very differ ent from the parent. In certain groups of plants, which have for many years been selected on account of the horticultural value of these markings, the variegated condition has become almost a fixed feature of the plant, as in dracienas, caladiums, codiseums, etc. While the plants


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