. Botany for secondary schools; a guide to the knowledge of the vegetation of the neighborhood. Plants. EXOGENOUS STRUCTURE 287 ogens: Prepare thin cross-sections of the stems of meni- spermum (moonseed), one year old, of geranium or of tomato plant. Other greenhouse or garden plants may be employed. Stain with hematoxylin. Make a permanent mount. Study with low power, and make a sketch showing the shape and location of the fibro-vascular bundles. (Fig. 455.) Save the mount for further study. If menispermum stems are not easily obtained, ivy (Hedera helix), clematis, geranium, coleus, tomato o
. Botany for secondary schools; a guide to the knowledge of the vegetation of the neighborhood. Plants. EXOGENOUS STRUCTURE 287 ogens: Prepare thin cross-sections of the stems of meni- spermum (moonseed), one year old, of geranium or of tomato plant. Other greenhouse or garden plants may be employed. Stain with hematoxylin. Make a permanent mount. Study with low power, and make a sketch showing the shape and location of the fibro-vascular bundles. (Fig. 455.) Save the mount for further study. If menispermum stems are not easily obtained, ivy (Hedera helix), clematis, geranium, coleus, tomato or other plants may be substi- tuted. In woody stems the compres- sion is such that the student is usu-. 455. Arrangement of tissues in 2-yenr-old stem of moonseed. /), pith; /, fundamental tis- sue; e, epidermis. The fibro- vascuiar bundles are very ally puzzled to understand the bundle The prominent. structure. The subject will be sim- plified if he compares (on cross-section) the bundles in such a plant as the cucumber with that part of the vascular ring that lies between any two medullary rays in one-year-old stems of peach, elm, oak. 488. Other Stems.— Be- sides the two types of stems studied above, which are prev- alent among phenogams, there are other kinds of struc- tures of stems among the Cryp- 456. Cross-section of root of brake (Pteris aquilina), showing tno-Qm • A nnm twelve concentric fibro-vascuhir bundles. The two long UU^dlllh. A tom- dark 8tranc]8 are composed of fibrous 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1913
