. Elements of plant anatomy;. Botany -- Anatomy. ANATOMY OF TISSUES. 45 are primarily derived from, and renewed by the cluster of original meristematic cells. The latter Hanstein named initial cells (or Urmeristem} while to the three groups he gave the name primary meristems. Each of these meristems was supposed to have its. Long section through the tip of stem of Hippuris vulgaris, d dermatogen. per periblem. pi pleronie. h b' b" beginnings of leaves, x 400. — {Accel, to Warming.) own initial cell or cells, necessitating a certain order of ar- rangement in this little group of original m
. Elements of plant anatomy;. Botany -- Anatomy. ANATOMY OF TISSUES. 45 are primarily derived from, and renewed by the cluster of original meristematic cells. The latter Hanstein named initial cells (or Urmeristem} while to the three groups he gave the name primary meristems. Each of these meristems was supposed to have its. Long section through the tip of stem of Hippuris vulgaris, d dermatogen. per periblem. pi pleronie. h b' b" beginnings of leaves, x 400. — {Accel, to Warming.) own initial cell or cells, necessitating a certain order of ar- rangement in this little group of original meristematic cells. (Fig. 21.) The dermatogen group consists of the external layer of meristematic cells, which remains a single layer, all subsequent divisions occurring by walls at right angles to the surface. The plerome forms a central cylinder in whose cells longitudinal divi- sions predominate. The periblem forms a zone, or hollow cyl- inder, around the plerome extending to the dermatogen, and its cells are marked by frequent and irregular transverse walls. The plant now consists of lasting tissue and two kinds of meristems, initial and primar3^ All the cells are still somewhat similar in form and size, and their axes, while by no means equal. 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 Gregory, Emily L. Boston, London, Ginn & Co.
Size: 1657px × 1508px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotanya, bookyear1895
