Page 14 – Apical growing region of stem
Fig. 11 . Apical growing region of stem. Radial section of the stem of a 3-months-old seedling to show the apical meristem, especially the specialized meristem (sm) and the region of root initiation. c, cortex; l, youngest leaf primodium, just forming; l₁, next youngest leaf primordium; lt leaf trace; pm, promeristem; ps, procambium strand; r, root primordium; s, stele; vn, vascular network at boundary between cortex and stele. A, X25; B, X50.