8. Structure of Woody Plants

Concepts
Vascular Cambium

• Initiation of the Vascular Cambium
• Fusiform Initials
• Ray Initials
• Arrangement of Cambial Cells

Secondary Xylem

• Types of Wood Cells
• Annual Rings
• Heartwood and Sapwood

Secondary Phloem
Outer Bark

• Cork and the Cork Cambium
• Lenticels and Oxygen Diffusion
• Initiation of Cork Cambia

Secondary Growth in Roots
Anomalous Forms of Growth

• Anomalous Secondary Growth
  • Roots of Sweet Potatoes
  • Included Phloem
  • Unequal Activity of the Vascular Cambium
  • Secondary Growth in Monocots
• Unusual Primary Growth

Plants and People: Dendrochronology-Tree Ring Analysis
Botany and Beyond: Wood in Three Dimensions
Botany and Beyond: Having Multiple Bodies in One Lifetime