. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 194 STEMS 71). This milky juice is called latex. It is an accumula- tion in which water, food, and waste products are all pres- ent. Its function is not well understood. It is usually contained in tubes which result from the fusion of many cells, or, as in the milkweed, result from the growth of special cells which, as they grow, crowd their way through the softer cells of the cortex. The latex vessels run through the entire plant somewhat as the vascular
. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 194 STEMS 71). This milky juice is called latex. It is an accumula- tion in which water, food, and waste products are all pres- ent. Its function is not well understood. It is usually contained in tubes which result from the fusion of many cells, or, as in the milkweed, result from the growth of special cells which, as they grow, crowd their way through the softer cells of the cortex. The latex vessels run through the entire plant somewhat as the vascular tissues do. (See Figure 6y.) A familiar example of latex, besides that of the milkweed, is the reddish juice of the bloodroot. Members of the spurge family are common plants all of which have abundant milky latex. Latex is of much eco- nomic importance for the reason that it con- tains caoutchouc (kou'- chook), the substance from which rubber is made. Although Fig. 67. — Tissue of the wild lettuce showing more Or less of Caout- the way in which the latex tubes («) branch cn0UC seemS to be preS- among the other cells. ent in all latex, that of only a few plants has been found profitable to use in the manufacture of rubber. Certain trees, either native to South America or thriving there under cultivation, produce the world's principal supply of caoutchouc. Other tropical trees, similar to these rubber trees, produce a latex from which gutta-percha is derived. Besides its use for golf. 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 G. (John Gaylord), b. 1876. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
