Page 04 – Stem
Fig. 5 . Stem. Transverse sections of a stem of a plant just before floral differentiation, i.e., 16 months old, to show the gross internal structure at different levels, as indicated in Fig.4 . ab, auxiliary bud, cut in cross sections; c, cortex; gvb, girdling band of vascular bundles, in longitudinal section; lab, lateral bud, cut in cross section; lb, leaf base, with vascular bundles cut in cross section; r, roots in stem cut in cross section; rp, root primordium; s, stele; sr, soil roots, cut in cross section; vn, vascular network at the boundary between the cortex and stele. Actual size.