. Foundations of Botany. Botany. e ck b s c w d m d P i" :=.â .---__=,,__ \ >:â':: _ _-H'--; " M !â 'W â 'M^^HB A : -. - - - " .. Fig. 58. â Stem of Box-Elder One Year Old. (Much magnified.) A, lengthwise (radial) section ; B, cross-section ; e, epidermis ; ck, cork ; 6, hard bast ; $, sieve-cells ; c, cambium ; w, wood-cells ; m, medullary rays ; d, ducts ; p, pith. in the stems of balsams, melons, cucumbers, and squashes, and in the flower-stalks of the dandelion. In older stems, such as the trunks of trees, the wood forms a pretty nearly solid cylinder. Stiffness in dicoty
. Foundations of Botany. Botany. e ck b s c w d m d P i" :=.â .---__=,,__ \ >:â':: _ _-H'--; " M !â 'W â 'M^^HB A : -. - - - " .. Fig. 58. â Stem of Box-Elder One Year Old. (Much magnified.) A, lengthwise (radial) section ; B, cross-section ; e, epidermis ; ck, cork ; 6, hard bast ; $, sieve-cells ; c, cambium ; w, wood-cells ; m, medullary rays ; d, ducts ; p, pith. in the stems of balsams, melons, cucumbers, and squashes, and in the flower-stalks of the dandelion. In older stems, such as the trunks of trees, the wood forms a pretty nearly solid cylinder. Stiffness in dicotyledonous stems is secured mainly in two ways : (1) by hard bast fibers, (2) by wood fibers. Which of these types does the stem (Fig. 55) represent? Which does the flax-stem (Fig. 60) represent?. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn & company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
