. Plant studies; an elementary botany. Botany. SHOOTS 57 the protected stem. Tins position is also talien advantage of for comparatively safe food storage, and such stems are apt to become more or less thickened and distorted liy this food deposit. 44. The procumbent type.—In this case the main hody of tlie stem lies more or less prostrate, although the advanc- ing tip is usually erect. Sucli stems may spread in all directions, and l)ecome interwoven into a mat or carpet. They are found especially on sterile and exjjosed soil,. Flu. 47. A strawbt'iT}' jilaiit, showiiiL' ;] runner which hiis il
. Plant studies; an elementary botany. Botany. SHOOTS 57 the protected stem. Tins position is also talien advantage of for comparatively safe food storage, and such stems are apt to become more or less thickened and distorted liy this food deposit. 44. The procumbent type.—In this case the main hody of tlie stem lies more or less prostrate, although the advanc- ing tip is usually erect. Sucli stems may spread in all directions, and l)ecome interwoven into a mat or carpet. They are found especially on sterile and exjjosed soil,. Flu. 47. A strawbt'iT}' jilaiit, showiiiL' ;] runner which hiis ilevel- oped a new l)Uint, wliich in turn liay sent out anotlier run- ner.—After Sei'bkrt. and there may be a,n intport;int relation Ijctween this fact and their habit, as there may not he sutficient building material for erect stems, and the erect i^osition might result in too much exposure to light, or heat, or wind, etc. Whatever may be the cause of the jjrocumbent habit, it has its advan- tages. As compared with the erect stem, there is economy of building material, for the rigid structures to enaljle it to stand upright are not necessary. On the other h;md, such a stem loses in its ])ower to display leaves. Instead of Ijeiu"- free to put out its leaves in every direction, one side is ao-ainst the ground, and the space for leaves is diminished at least one-half. All the leaves it bears are necessarily directed towards the free side (see Fig. is). We mav be sure, however, that any disadvantage com- ing from this unfavorable position for leaf display is over- balanced by advantages in other respects. The position is. 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
Size: 2315px × 1080px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
