Title
Page 37 – Stem apex and leaf primordia
Creator
Date
c. 1940
Format
Description
Stem apex and leaf primordia
Outlines of a series of longitudinal sections of the apical portion of the stem from a 4-months-old plant to show the development of the leaf primordia and young leaves. Sections (cut 15/ᵘ thick) are shown in serial sequence, A-U incl. l, last formed or youngest leaf primordium; l₁, l₂, l₃, and l₄ are successively older primordia and leaves; sa, stem apex. The broken lines represent the lower limits of the primordia and leaves, and the dotted lines, the procambial and vascular strands. X40.
Outlines of a series of longitudinal sections of the apical portion of the stem from a 4-months-old plant to show the development of the leaf primordia and young leaves. Sections (cut 15/ᵘ thick) are shown in serial sequence, A-U incl. l, last formed or youngest leaf primordium; l₁, l₂, l₃, and l₄ are successively older primordia and leaves; sa, stem apex. The broken lines represent the lower limits of the primordia and leaves, and the dotted lines, the procambial and vascular strands. X40.